--- _id: '6056' abstract: - lang: eng text: In today's programmable blockchains, smart contracts are limited to being deterministic and non-probabilistic. This lack of randomness is a consequential limitation, given that a wide variety of real-world financial contracts, such as casino games and lotteries, depend entirely on randomness. As a result, several ad-hoc random number generation approaches have been developed to be used in smart contracts. These include ideas such as using an oracle or relying on the block hash. However, these approaches are manipulatable, i.e. their output can be tampered with by parties who might not be neutral, such as the owner of the oracle or the miners.We propose a novel game-theoretic approach for generating provably unmanipulatable pseudorandom numbers on the blockchain. Our approach allows smart contracts to access a trustworthy source of randomness that does not rely on potentially compromised miners or oracles, hence enabling the creation of a new generation of smart contracts that are not limited to being non-probabilistic and can be drawn from the much more general class of probabilistic programs. article_number: '8751326' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Amir Kafshdar full_name: Goharshady, Amir Kafshdar id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 - first_name: Arash full_name: Pourdamghani, Arash last_name: Pourdamghani citation: ama: 'Chatterjee K, Goharshady AK, Pourdamghani A. Probabilistic smart contracts: Secure randomness on the blockchain. In: IEEE International Conference on Blockchain and Cryptocurrency. IEEE; 2019. doi:10.1109/BLOC.2019.8751326' apa: 'Chatterjee, K., Goharshady, A. K., & Pourdamghani, A. (2019). Probabilistic smart contracts: Secure randomness on the blockchain. In IEEE International Conference on Blockchain and Cryptocurrency. Seoul, Korea: IEEE. https://doi.org/10.1109/BLOC.2019.8751326' chicago: 'Chatterjee, Krishnendu, Amir Kafshdar Goharshady, and Arash Pourdamghani. “Probabilistic Smart Contracts: Secure Randomness on the Blockchain.” In IEEE International Conference on Blockchain and Cryptocurrency. IEEE, 2019. https://doi.org/10.1109/BLOC.2019.8751326.' ieee: 'K. Chatterjee, A. K. Goharshady, and A. Pourdamghani, “Probabilistic smart contracts: Secure randomness on the blockchain,” in IEEE International Conference on Blockchain and Cryptocurrency, Seoul, Korea, 2019.' ista: 'Chatterjee K, Goharshady AK, Pourdamghani A. 2019. Probabilistic smart contracts: Secure randomness on the blockchain. IEEE International Conference on Blockchain and Cryptocurrency. IEEE International Conference on Blockchain and Cryptocurrency, 8751326.' mla: 'Chatterjee, Krishnendu, et al. “Probabilistic Smart Contracts: Secure Randomness on the Blockchain.” IEEE International Conference on Blockchain and Cryptocurrency, 8751326, IEEE, 2019, doi:10.1109/BLOC.2019.8751326.' short: K. Chatterjee, A.K. Goharshady, A. Pourdamghani, in:, IEEE International Conference on Blockchain and Cryptocurrency, IEEE, 2019. conference: end_date: 2019-05-17 location: Seoul, Korea name: IEEE International Conference on Blockchain and Cryptocurrency start_date: 2019-05-14 date_created: 2019-02-26T09:03:15Z date_published: 2019-05-01T00:00:00Z date_updated: 2024-03-28T23:30:33Z day: '01' department: - _id: KrCh doi: 10.1109/BLOC.2019.8751326 ec_funded: 1 external_id: arxiv: - '1902.07986' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1902.07986 month: '05' oa: 1 oa_version: Preprint project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 266EEEC0-B435-11E9-9278-68D0E5697425 name: Quantitative Game-theoretic Analysis of Blockchain Applications and Smart Contracts - _id: 267066CE-B435-11E9-9278-68D0E5697425 name: Quantitative Analysis of Probablistic Systems with a focus on Crypto-currencies publication: IEEE International Conference on Blockchain and Cryptocurrency publication_status: published publisher: IEEE quality_controlled: '1' related_material: record: - id: '8934' relation: dissertation_contains status: public scopus_import: 1 status: public title: 'Probabilistic smart contracts: Secure randomness on the blockchain' type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 year: '2019' ... --- _id: '6378' abstract: - lang: eng text: 'In today''s cryptocurrencies, Hashcash proof of work is the most commonly-adopted approach to mining. In Hashcash, when a miner decides to add a block to the chain, she has to solve the difficult computational puzzle of inverting a hash function. While Hashcash has been successfully adopted in both Bitcoin and Ethereum, it has attracted significant and harsh criticism due to its massive waste of electricity, its carbon footprint and environmental effects, and the inherent lack of usefulness in inverting a hash function. Various other mining protocols have been suggested, including proof of stake, in which a miner''s chance of adding the next block is proportional to her current balance. However, such protocols lead to a higher entry cost for new miners who might not still have any stake in the cryptocurrency, and can in the worst case lead to an oligopoly, where the rich have complete control over mining. In this paper, we propose Hybrid Mining: a new mining protocol that combines solving real-world useful problems with Hashcash. Our protocol allows new miners to join the network by taking part in Hashcash mining without having to own an initial stake. It also allows nodes of the network to submit hard computational problems whose solutions are of interest in the real world, e.g.~protein folding problems. Then, miners can choose to compete in solving these problems, in lieu of Hashcash, for adding a new block. Hence, Hybrid Mining incentivizes miners to solve useful problems, such as hard computational problems arising in biology, in a distributed manner. It also gives researchers in other areas an easy-to-use tool to outsource their hard computations to the blockchain network, which has enormous computational power, by paying a reward to the miner who solves the problem for them. Moreover, our protocol provides strong security guarantees and is at least as resilient to double spending as Bitcoin.' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Amir Kafshdar full_name: Goharshady, Amir Kafshdar id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 - first_name: Arash full_name: Pourdamghani, Arash last_name: Pourdamghani citation: ama: 'Chatterjee K, Goharshady AK, Pourdamghani A. Hybrid Mining: Exploiting blockchain’s computational power for distributed problem solving. In: Proceedings of the 34th ACM Symposium on Applied Computing. Vol Part F147772. ACM; 2019:374-381. doi:10.1145/3297280.3297319' apa: 'Chatterjee, K., Goharshady, A. K., & Pourdamghani, A. (2019). Hybrid Mining: Exploiting blockchain’s computational power for distributed problem solving. In Proceedings of the 34th ACM Symposium on Applied Computing (Vol. Part F147772, pp. 374–381). Limassol, Cyprus: ACM. https://doi.org/10.1145/3297280.3297319' chicago: 'Chatterjee, Krishnendu, Amir Kafshdar Goharshady, and Arash Pourdamghani. “Hybrid Mining: Exploiting Blockchain’s Computational Power for Distributed Problem Solving.” In Proceedings of the 34th ACM Symposium on Applied Computing, Part F147772:374–81. ACM, 2019. https://doi.org/10.1145/3297280.3297319.' ieee: 'K. Chatterjee, A. K. Goharshady, and A. Pourdamghani, “Hybrid Mining: Exploiting blockchain’s computational power for distributed problem solving,” in Proceedings of the 34th ACM Symposium on Applied Computing, Limassol, Cyprus, 2019, vol. Part F147772, pp. 374–381.' ista: 'Chatterjee K, Goharshady AK, Pourdamghani A. 2019. Hybrid Mining: Exploiting blockchain’s computational power for distributed problem solving. Proceedings of the 34th ACM Symposium on Applied Computing. ACM Symposium on Applied Computing vol. Part F147772, 374–381.' mla: 'Chatterjee, Krishnendu, et al. “Hybrid Mining: Exploiting Blockchain’s Computational Power for Distributed Problem Solving.” Proceedings of the 34th ACM Symposium on Applied Computing, vol. Part F147772, ACM, 2019, pp. 374–81, doi:10.1145/3297280.3297319.' short: K. Chatterjee, A.K. Goharshady, A. Pourdamghani, in:, Proceedings of the 34th ACM Symposium on Applied Computing, ACM, 2019, pp. 374–381. conference: end_date: 2019-04-12 location: Limassol, Cyprus name: ACM Symposium on Applied Computing start_date: 2019-04-08 date_created: 2019-05-06T12:11:36Z date_published: 2019-04-01T00:00:00Z date_updated: 2024-03-28T23:30:34Z day: '01' ddc: - '004' department: - _id: KrCh doi: 10.1145/3297280.3297319 ec_funded: 1 external_id: isi: - '000474685800049' file: - access_level: open_access checksum: fbfbcd5a0c7a743862bfc3045539a614 content_type: application/pdf creator: dernst date_created: 2019-05-06T12:09:27Z date_updated: 2020-07-14T12:47:29Z file_id: '6379' file_name: 2019_ACM_Chatterjee.pdf file_size: 1023934 relation: main_file file_date_updated: 2020-07-14T12:47:29Z has_accepted_license: '1' isi: 1 language: - iso: eng month: '04' oa: 1 oa_version: Submitted Version page: 374-381 project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering publication: Proceedings of the 34th ACM Symposium on Applied Computing publication_identifier: isbn: - '9781450359337' publication_status: published publisher: ACM pubrep_id: '1069' quality_controlled: '1' related_material: record: - id: '8934' relation: dissertation_contains status: public scopus_import: '1' status: public title: 'Hybrid Mining: Exploiting blockchain’s computational power for distributed problem solving' type: conference user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: Part F147772 year: '2019' ... --- _id: '6175' abstract: - lang: eng text: "We consider the problem of expected cost analysis over nondeterministic probabilistic programs,\r\nwhich aims at automated methods for analyzing the resource-usage of such programs.\r\nPrevious approaches for this problem could only handle nonnegative bounded costs.\r\nHowever, in many scenarios, such as queuing networks or analysis of cryptocurrency protocols,\r\nboth positive and negative costs are necessary and the costs are unbounded as well.\r\n\r\nIn this work, we present a sound and efficient approach to obtain polynomial bounds on the\r\nexpected accumulated cost of nondeterministic probabilistic programs.\r\nOur approach can handle (a) general positive and negative costs with bounded updates in\r\nvariables; and (b) nonnegative costs with general updates to variables.\r\nWe show that several natural examples which could not be\r\nhandled by previous approaches are captured in our framework.\r\n\r\nMoreover, our approach leads to an efficient polynomial-time algorithm, while no\r\nprevious approach for cost analysis of probabilistic programs could guarantee polynomial runtime.\r\nFinally, we show the effectiveness of our approach using experimental results on a variety of programs for which we efficiently synthesize tight resource-usage bounds." article_processing_charge: No author: - first_name: Peixin full_name: Wang, Peixin last_name: Wang - first_name: Hongfei full_name: Fu, Hongfei id: 3AAD03D6-F248-11E8-B48F-1D18A9856A87 last_name: Fu - first_name: Amir Kafshdar full_name: Goharshady, Amir Kafshdar id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Xudong full_name: Qin, Xudong last_name: Qin - first_name: Wenjun full_name: Shi, Wenjun last_name: Shi citation: ama: 'Wang P, Fu H, Goharshady AK, Chatterjee K, Qin X, Shi W. Cost analysis of nondeterministic probabilistic programs. In: PLDI 2019: Proceedings of the 40th ACM SIGPLAN Conference on Programming Language Design and Implementation. Association for Computing Machinery; 2019:204-220. doi:10.1145/3314221.3314581' apa: 'Wang, P., Fu, H., Goharshady, A. K., Chatterjee, K., Qin, X., & Shi, W. (2019). Cost analysis of nondeterministic probabilistic programs. In PLDI 2019: Proceedings of the 40th ACM SIGPLAN Conference on Programming Language Design and Implementation (pp. 204–220). Phoenix, AZ, United States: Association for Computing Machinery. https://doi.org/10.1145/3314221.3314581' chicago: 'Wang, Peixin, Hongfei Fu, Amir Kafshdar Goharshady, Krishnendu Chatterjee, Xudong Qin, and Wenjun Shi. “Cost Analysis of Nondeterministic Probabilistic Programs.” In PLDI 2019: Proceedings of the 40th ACM SIGPLAN Conference on Programming Language Design and Implementation, 204–20. Association for Computing Machinery, 2019. https://doi.org/10.1145/3314221.3314581.' ieee: 'P. Wang, H. Fu, A. K. Goharshady, K. Chatterjee, X. Qin, and W. Shi, “Cost analysis of nondeterministic probabilistic programs,” in PLDI 2019: Proceedings of the 40th ACM SIGPLAN Conference on Programming Language Design and Implementation, Phoenix, AZ, United States, 2019, pp. 204–220.' ista: 'Wang P, Fu H, Goharshady AK, Chatterjee K, Qin X, Shi W. 2019. Cost analysis of nondeterministic probabilistic programs. PLDI 2019: Proceedings of the 40th ACM SIGPLAN Conference on Programming Language Design and Implementation. PLDI: Conference on Programming Language Design and Implementation, 204–220.' mla: 'Wang, Peixin, et al. “Cost Analysis of Nondeterministic Probabilistic Programs.” PLDI 2019: Proceedings of the 40th ACM SIGPLAN Conference on Programming Language Design and Implementation, Association for Computing Machinery, 2019, pp. 204–20, doi:10.1145/3314221.3314581.' short: 'P. Wang, H. Fu, A.K. Goharshady, K. Chatterjee, X. Qin, W. Shi, in:, PLDI 2019: Proceedings of the 40th ACM SIGPLAN Conference on Programming Language Design and Implementation, Association for Computing Machinery, 2019, pp. 204–220.' conference: end_date: 2019-06-26 location: Phoenix, AZ, United States name: 'PLDI: Conference on Programming Language Design and Implementation' start_date: 2019-06-22 date_created: 2019-03-25T10:13:25Z date_published: 2019-06-08T00:00:00Z date_updated: 2024-03-28T23:30:34Z day: '08' ddc: - '000' department: - _id: KrCh doi: 10.1145/3314221.3314581 ec_funded: 1 external_id: arxiv: - '1902.04659' isi: - '000523190300014' file: - access_level: open_access checksum: 703a5e9b8c8587f2a44085ffd9a4db64 content_type: application/pdf creator: akafshda date_created: 2019-03-25T10:11:22Z date_updated: 2020-07-14T12:47:20Z file_id: '6176' file_name: paper.pdf file_size: 4051066 relation: main_file file_date_updated: 2020-07-14T12:47:20Z has_accepted_license: '1' isi: 1 keyword: - Program Cost Analysis - Program Termination - Probabilistic Programs - Martingales language: - iso: eng month: '06' oa: 1 oa_version: Submitted Version page: 204-220 project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 266EEEC0-B435-11E9-9278-68D0E5697425 name: Quantitative Game-theoretic Analysis of Blockchain Applications and Smart Contracts publication: 'PLDI 2019: Proceedings of the 40th ACM SIGPLAN Conference on Programming Language Design and Implementation' publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' related_material: record: - id: '5457' relation: earlier_version status: public - id: '8934' relation: dissertation_contains status: public scopus_import: '1' status: public title: Cost analysis of nondeterministic probabilistic programs type: conference user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 year: '2019' ... --- _id: '6490' abstract: - lang: eng text: "Smart contracts are programs that are stored and executed on the Blockchain and can receive, manage and transfer money (cryptocurrency units). Two important problems regarding smart contracts are formal analysis and compiler optimization. Formal analysis is extremely important, because smart contracts hold funds worth billions of dollars and their code is immutable after deployment. Hence, an undetected bug can cause significant financial losses. Compiler optimization is also crucial, because every action of a smart contract has to be executed by every node in the Blockchain network. Therefore, optimizations in compiling smart contracts can lead to significant savings in computation, time and energy.\r\n\r\nTwo classical approaches in program analysis and compiler optimization are intraprocedural and interprocedural analysis. In intraprocedural analysis, each function is analyzed separately, while interprocedural analysis considers the entire program. In both cases, the analyses are usually reduced to graph problems over the control flow graph (CFG) of the program. These graph problems are often computationally expensive. Hence, there has been ample research on exploiting structural properties of CFGs for efficient algorithms. One such well-studied property is the treewidth, which is a measure of tree-likeness of graphs. It is known that intraprocedural CFGs of structured programs have treewidth at most 6, whereas the interprocedural treewidth cannot be bounded. This result has been used as a basis for many efficient intraprocedural analyses.\r\n\r\nIn this paper, we explore the idea of exploiting the treewidth of smart contracts for formal analysis and compiler optimization. First, similar to classical programs, we show that the intraprocedural treewidth of structured Solidity and Vyper smart contracts is at most 9. Second, for global analysis, we prove that the interprocedural treewidth of structured smart contracts is bounded by 10 and, in sharp contrast with classical programs, treewidth-based algorithms can be easily applied for interprocedural analysis. Finally, we supplement our theoretical results with experiments using a tool we implemented for computing treewidth of smart contracts and show that the treewidth is much lower in practice. We use 36,764 real-world Ethereum smart contracts as benchmarks and find that they have an average treewidth of at most 3.35 for the intraprocedural case and 3.65 for the interprocedural case.\r\n" article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Amir Kafshdar full_name: Goharshady, Amir Kafshdar id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 - first_name: Ehsan Kafshdar full_name: Goharshady, Ehsan Kafshdar last_name: Goharshady citation: ama: 'Chatterjee K, Goharshady AK, Goharshady EK. The treewidth of smart contracts. In: Proceedings of the 34th ACM Symposium on Applied Computing. Vol Part F147772. ACM; :400-408. doi:10.1145/3297280.3297322' apa: 'Chatterjee, K., Goharshady, A. K., & Goharshady, E. K. (n.d.). The treewidth of smart contracts. In Proceedings of the 34th ACM Symposium on Applied Computing (Vol. Part F147772, pp. 400–408). Limassol, Cyprus: ACM. https://doi.org/10.1145/3297280.3297322' chicago: Chatterjee, Krishnendu, Amir Kafshdar Goharshady, and Ehsan Kafshdar Goharshady. “The Treewidth of Smart Contracts.” In Proceedings of the 34th ACM Symposium on Applied Computing, Part F147772:400–408. ACM, n.d. https://doi.org/10.1145/3297280.3297322. ieee: K. Chatterjee, A. K. Goharshady, and E. K. Goharshady, “The treewidth of smart contracts,” in Proceedings of the 34th ACM Symposium on Applied Computing, Limassol, Cyprus, vol. Part F147772, pp. 400–408. ista: 'Chatterjee K, Goharshady AK, Goharshady EK. The treewidth of smart contracts. Proceedings of the 34th ACM Symposium on Applied Computing. SAC: Symposium on Applied Computing vol. Part F147772, 400–408.' mla: Chatterjee, Krishnendu, et al. “The Treewidth of Smart Contracts.” Proceedings of the 34th ACM Symposium on Applied Computing, vol. Part F147772, ACM, pp. 400–08, doi:10.1145/3297280.3297322. short: K. Chatterjee, A.K. Goharshady, E.K. Goharshady, in:, Proceedings of the 34th ACM Symposium on Applied Computing, ACM, n.d., pp. 400–408. conference: end_date: 2019-04-12 location: Limassol, Cyprus name: 'SAC: Symposium on Applied Computing' start_date: 2019-04-08 date_created: 2019-05-26T21:59:15Z date_published: 2019-04-01T00:00:00Z date_updated: 2024-03-28T23:30:34Z day: '01' ddc: - '000' department: - _id: KrCh doi: 10.1145/3297280.3297322 external_id: isi: - '000474685800052' file: - access_level: open_access checksum: dddc20f6d9881f23b8755eb720ec9d6f content_type: application/pdf creator: dernst date_created: 2020-05-14T09:50:11Z date_updated: 2020-07-14T12:47:32Z file_id: '7827' file_name: 2019_ACM_Chatterjee.pdf file_size: 6937138 relation: main_file file_date_updated: 2020-07-14T12:47:32Z has_accepted_license: '1' isi: 1 language: - iso: eng month: '04' oa: 1 oa_version: Submitted Version page: 400-408 publication: Proceedings of the 34th ACM Symposium on Applied Computing publication_identifier: isbn: - '9781450359337' publication_status: submitted publisher: ACM pubrep_id: '1070' quality_controlled: '1' related_material: record: - id: '8934' relation: dissertation_contains status: public scopus_import: '1' status: public title: The treewidth of smart contracts type: conference user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: Part F147772 year: '2019' ... --- _id: '7158' abstract: - lang: eng text: "Interprocedural analysis is at the heart of numerous applications in programming languages, such as alias analysis, constant propagation, and so on. Recursive state machines (RSMs) are standard models for interprocedural analysis. We consider a general framework with RSMs where the transitions are labeled from a semiring and path properties are algebraic with semiring operations. RSMs with algebraic path properties can model interprocedural dataflow analysis problems, the shortest path problem, the most probable path problem, and so on. The traditional algorithms for interprocedural analysis focus on path properties where the starting point is fixed as the entry point of a specific method. In this work, we consider possible multiple queries as required in many applications such as in alias analysis. The study of multiple queries allows us to bring in an important algorithmic distinction between the resource usage of the one-time preprocessing vs for each individual query. The second aspect we consider is that the control flow graphs for most programs have constant treewidth.\r\n\r\nOur main contributions are simple and implementable algorithms that support multiple queries for algebraic path properties for RSMs that have constant treewidth. Our theoretical results show that our algorithms have small additional one-time preprocessing but can answer subsequent queries significantly faster as compared to the current algorithmic solutions for interprocedural dataflow analysis. We have also implemented our algorithms and evaluated their performance for performing on-demand interprocedural dataflow analysis on various domains, such as for live variable analysis and reaching definitions, on a standard benchmark set. Our experimental results align with our theoretical statements and show that after a lightweight preprocessing, on-demand queries are answered much faster than the standard existing algorithmic approaches.\r\n" article_number: '23' article_processing_charge: No article_type: original author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Amir Kafshdar full_name: Goharshady, Amir Kafshdar id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 - first_name: Prateesh full_name: Goyal, Prateesh last_name: Goyal - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 citation: ama: Chatterjee K, Goharshady AK, Goyal P, Ibsen-Jensen R, Pavlogiannis A. Faster algorithms for dynamic algebraic queries in basic RSMs with constant treewidth. ACM Transactions on Programming Languages and Systems. 2019;41(4). doi:10.1145/3363525 apa: Chatterjee, K., Goharshady, A. K., Goyal, P., Ibsen-Jensen, R., & Pavlogiannis, A. (2019). Faster algorithms for dynamic algebraic queries in basic RSMs with constant treewidth. ACM Transactions on Programming Languages and Systems. ACM. https://doi.org/10.1145/3363525 chicago: Chatterjee, Krishnendu, Amir Kafshdar Goharshady, Prateesh Goyal, Rasmus Ibsen-Jensen, and Andreas Pavlogiannis. “Faster Algorithms for Dynamic Algebraic Queries in Basic RSMs with Constant Treewidth.” ACM Transactions on Programming Languages and Systems. ACM, 2019. https://doi.org/10.1145/3363525. ieee: K. Chatterjee, A. K. Goharshady, P. Goyal, R. Ibsen-Jensen, and A. Pavlogiannis, “Faster algorithms for dynamic algebraic queries in basic RSMs with constant treewidth,” ACM Transactions on Programming Languages and Systems, vol. 41, no. 4. ACM, 2019. ista: Chatterjee K, Goharshady AK, Goyal P, Ibsen-Jensen R, Pavlogiannis A. 2019. Faster algorithms for dynamic algebraic queries in basic RSMs with constant treewidth. ACM Transactions on Programming Languages and Systems. 41(4), 23. mla: Chatterjee, Krishnendu, et al. “Faster Algorithms for Dynamic Algebraic Queries in Basic RSMs with Constant Treewidth.” ACM Transactions on Programming Languages and Systems, vol. 41, no. 4, 23, ACM, 2019, doi:10.1145/3363525. short: K. Chatterjee, A.K. Goharshady, P. Goyal, R. Ibsen-Jensen, A. Pavlogiannis, ACM Transactions on Programming Languages and Systems 41 (2019). date_created: 2019-12-09T08:33:33Z date_published: 2019-11-01T00:00:00Z date_updated: 2024-03-28T23:30:34Z day: '01' ddc: - '000' department: - _id: KrCh doi: 10.1145/3363525 ec_funded: 1 external_id: isi: - '000564108400004' file: - access_level: open_access checksum: 291cc86a07bd010d4815e177dac57b70 content_type: application/pdf creator: dernst date_created: 2020-10-08T12:58:10Z date_updated: 2020-10-08T12:58:10Z file_id: '8632' file_name: 2019_ACMTransactions_Chatterjee.pdf file_size: 667357 relation: main_file success: 1 file_date_updated: 2020-10-08T12:58:10Z has_accepted_license: '1' intvolume: ' 41' isi: 1 issue: '4' language: - iso: eng month: '11' oa: 1 oa_version: Submitted Version project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: ACM Transactions on Programming Languages and Systems publication_identifier: issn: - 0164-0925 publication_status: published publisher: ACM quality_controlled: '1' related_material: record: - id: '8934' relation: dissertation_contains status: public scopus_import: '1' status: public title: Faster algorithms for dynamic algebraic queries in basic RSMs with constant treewidth type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 41 year: '2019' ... --- _id: '7014' abstract: - lang: eng text: "We study the problem of developing efficient approaches for proving\r\nworst-case bounds of non-deterministic recursive programs. Ranking functions\r\nare sound and complete for proving termination and worst-case bounds of\r\nnonrecursive programs. First, we apply ranking functions to recursion,\r\nresulting in measure functions. We show that measure functions provide a sound\r\nand complete approach to prove worst-case bounds of non-deterministic recursive\r\nprograms. Our second contribution is the synthesis of measure functions in\r\nnonpolynomial forms. We show that non-polynomial measure functions with\r\nlogarithm and exponentiation can be synthesized through abstraction of\r\nlogarithmic or exponentiation terms, Farkas' Lemma, and Handelman's Theorem\r\nusing linear programming. While previous methods obtain worst-case polynomial\r\nbounds, our approach can synthesize bounds of the form $\\mathcal{O}(n\\log n)$\r\nas well as $\\mathcal{O}(n^r)$ where $r$ is not an integer. We present\r\nexperimental results to demonstrate that our approach can obtain efficiently\r\nworst-case bounds of classical recursive algorithms such as (i) Merge-Sort, the\r\ndivide-and-conquer algorithm for the Closest-Pair problem, where we obtain\r\n$\\mathcal{O}(n \\log n)$ worst-case bound, and (ii) Karatsuba's algorithm for\r\npolynomial multiplication and Strassen's algorithm for matrix multiplication,\r\nwhere we obtain $\\mathcal{O}(n^r)$ bound such that $r$ is not an integer and\r\nclose to the best-known bounds for the respective algorithms." article_number: '20' article_processing_charge: No article_type: original author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Hongfei full_name: Fu, Hongfei last_name: Fu - first_name: Amir Kafshdar full_name: Goharshady, Amir Kafshdar id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 citation: ama: Chatterjee K, Fu H, Goharshady AK. Non-polynomial worst-case analysis of recursive programs. ACM Transactions on Programming Languages and Systems. 2019;41(4). doi:10.1145/3339984 apa: Chatterjee, K., Fu, H., & Goharshady, A. K. (2019). Non-polynomial worst-case analysis of recursive programs. ACM Transactions on Programming Languages and Systems. ACM. https://doi.org/10.1145/3339984 chicago: Chatterjee, Krishnendu, Hongfei Fu, and Amir Kafshdar Goharshady. “Non-Polynomial Worst-Case Analysis of Recursive Programs.” ACM Transactions on Programming Languages and Systems. ACM, 2019. https://doi.org/10.1145/3339984. ieee: K. Chatterjee, H. Fu, and A. K. Goharshady, “Non-polynomial worst-case analysis of recursive programs,” ACM Transactions on Programming Languages and Systems, vol. 41, no. 4. ACM, 2019. ista: Chatterjee K, Fu H, Goharshady AK. 2019. Non-polynomial worst-case analysis of recursive programs. ACM Transactions on Programming Languages and Systems. 41(4), 20. mla: Chatterjee, Krishnendu, et al. “Non-Polynomial Worst-Case Analysis of Recursive Programs.” ACM Transactions on Programming Languages and Systems, vol. 41, no. 4, 20, ACM, 2019, doi:10.1145/3339984. short: K. Chatterjee, H. Fu, A.K. Goharshady, ACM Transactions on Programming Languages and Systems 41 (2019). date_created: 2019-11-13T08:33:43Z date_published: 2019-10-01T00:00:00Z date_updated: 2024-03-28T23:30:34Z day: '01' department: - _id: KrCh doi: 10.1145/3339984 ec_funded: 1 external_id: arxiv: - '1705.00317' isi: - '000564108400001' intvolume: ' 41' isi: 1 issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1705.00317 month: '10' oa: 1 oa_version: Preprint project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 267066CE-B435-11E9-9278-68D0E5697425 name: Quantitative Analysis of Probablistic Systems with a focus on Crypto-currencies - _id: 266EEEC0-B435-11E9-9278-68D0E5697425 name: Quantitative Game-theoretic Analysis of Blockchain Applications and Smart Contracts publication: ACM Transactions on Programming Languages and Systems publication_status: published publisher: ACM quality_controlled: '1' related_material: record: - id: '639' relation: earlier_version status: public - id: '8934' relation: dissertation_contains status: public scopus_import: '1' status: public title: Non-polynomial worst-case analysis of recursive programs type: journal_article user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8 volume: 41 year: '2019' ... --- _id: '10883' abstract: - lang: eng text: 'Solving parity games, which are equivalent to modal μ-calculus model checking, is a central algorithmic problem in formal methods, with applications in reactive synthesis, program repair, verification of branching-time properties, etc. Besides the standard compu- tation model with the explicit representation of games, another important theoretical model of computation is that of set-based symbolic algorithms. Set-based symbolic algorithms use basic set operations and one-step predecessor operations on the implicit description of games, rather than the explicit representation. The significance of symbolic algorithms is that they provide scalable algorithms for large finite-state systems, as well as for infinite-state systems with finite quotient. Consider parity games on graphs with n vertices and parity conditions with d priorities. While there is a rich literature of explicit algorithms for parity games, the main results for set-based symbolic algorithms are as follows: (a) the basic algorithm that requires O(nd) symbolic operations and O(d) symbolic space; and (b) an improved algorithm that requires O(nd/3+1) symbolic operations and O(n) symbolic space. In this work, our contributions are as follows: (1) We present a black-box set-based symbolic algorithm based on the explicit progress measure algorithm. Two important consequences of our algorithm are as follows: (a) a set-based symbolic algorithm for parity games that requires quasi-polynomially many symbolic operations and O(n) symbolic space; and (b) any future improvement in progress measure based explicit algorithms immediately imply an efficiency improvement in our set-based symbolic algorithm for parity games. (2) We present a set-based symbolic algorithm that requires quasi-polynomially many symbolic operations and O(d · log n) symbolic space. Moreover, for the important special case of d ≤ log n, our algorithm requires only polynomially many symbolic operations and poly-logarithmic symbolic space.' acknowledgement: 'A. S. is fully supported by the Vienna Science and Technology Fund (WWTF) through project ICT15-003. K.C. is supported by the Austrian Science Fund (FWF) NFN Grant No S11407-N23 (RiSE/SHiNE) and an ERC Starting grant (279307: Graph Games). For M.H the research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013) /ERC Grant Agreement no. 340506.' alternative_title: - EPiC Series in Computing article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Wolfgang full_name: Dvořák, Wolfgang last_name: Dvořák - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Alexander full_name: Svozil, Alexander last_name: Svozil citation: ama: 'Chatterjee K, Dvořák W, Henzinger MH, Svozil A. Quasipolynomial set-based symbolic algorithms for parity games. In: 22nd International Conference on Logic for Programming, Artificial Intelligence and Reasoning. Vol 57. EasyChair; 2018:233-253. doi:10.29007/5z5k' apa: 'Chatterjee, K., Dvořák, W., Henzinger, M. H., & Svozil, A. (2018). Quasipolynomial set-based symbolic algorithms for parity games. In 22nd International Conference on Logic for Programming, Artificial Intelligence and Reasoning (Vol. 57, pp. 233–253). Awassa, Ethiopia: EasyChair. https://doi.org/10.29007/5z5k' chicago: Chatterjee, Krishnendu, Wolfgang Dvořák, Monika H Henzinger, and Alexander Svozil. “Quasipolynomial Set-Based Symbolic Algorithms for Parity Games.” In 22nd International Conference on Logic for Programming, Artificial Intelligence and Reasoning, 57:233–53. EasyChair, 2018. https://doi.org/10.29007/5z5k. ieee: K. Chatterjee, W. Dvořák, M. H. Henzinger, and A. Svozil, “Quasipolynomial set-based symbolic algorithms for parity games,” in 22nd International Conference on Logic for Programming, Artificial Intelligence and Reasoning, Awassa, Ethiopia, 2018, vol. 57, pp. 233–253. ista: 'Chatterjee K, Dvořák W, Henzinger MH, Svozil A. 2018. Quasipolynomial set-based symbolic algorithms for parity games. 22nd International Conference on Logic for Programming, Artificial Intelligence and Reasoning. LPAR: Conference on Logic for Programming, Artificial Intelligence and Reasoning, EPiC Series in Computing, vol. 57, 233–253.' mla: Chatterjee, Krishnendu, et al. “Quasipolynomial Set-Based Symbolic Algorithms for Parity Games.” 22nd International Conference on Logic for Programming, Artificial Intelligence and Reasoning, vol. 57, EasyChair, 2018, pp. 233–53, doi:10.29007/5z5k. short: K. Chatterjee, W. Dvořák, M.H. Henzinger, A. Svozil, in:, 22nd International Conference on Logic for Programming, Artificial Intelligence and Reasoning, EasyChair, 2018, pp. 233–253. conference: end_date: 2018-11-21 location: Awassa, Ethiopia name: 'LPAR: Conference on Logic for Programming, Artificial Intelligence and Reasoning' start_date: 2018-11-17 date_created: 2022-03-18T12:46:32Z date_published: 2018-10-23T00:00:00Z date_updated: 2022-07-29T09:24:31Z day: '23' ddc: - '000' department: - _id: KrCh doi: 10.29007/5z5k ec_funded: 1 external_id: arxiv: - '1909.04983' file: - access_level: open_access checksum: 1229aa8640bd6db610c85decf2265480 content_type: application/pdf creator: dernst date_created: 2022-05-17T07:51:08Z date_updated: 2022-05-17T07:51:08Z file_id: '11392' file_name: 2018_EPiCs_Chatterjee.pdf file_size: 720893 relation: main_file success: 1 file_date_updated: 2022-05-17T07:51:08Z has_accepted_license: '1' intvolume: ' 57' language: - iso: eng month: '10' oa: 1 oa_version: Published Version page: 233-253 project: - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: 22nd International Conference on Logic for Programming, Artificial Intelligence and Reasoning publication_identifier: issn: - 2398-7340 publication_status: published publisher: EasyChair quality_controlled: '1' scopus_import: '1' status: public title: Quasipolynomial set-based symbolic algorithms for parity games type: conference user_id: 72615eeb-f1f3-11ec-aa25-d4573ddc34fd volume: 57 year: '2018' ... --- _id: '325' abstract: - lang: eng text: Probabilistic programs extend classical imperative programs with real-valued random variables and random branching. The most basic liveness property for such programs is the termination property. The qualitative (aka almost-sure) termination problem asks whether a given program program terminates with probability 1. While ranking functions provide a sound and complete method for non-probabilistic programs, the extension of them to probabilistic programs is achieved via ranking supermartingales (RSMs). Although deep theoretical results have been established about RSMs, their application to probabilistic programs with nondeterminism has been limited only to programs of restricted control-flow structure. For non-probabilistic programs, lexicographic ranking functions provide a compositional and practical approach for termination analysis of real-world programs. In this work we introduce lexicographic RSMs and show that they present a sound method for almost-sure termination of probabilistic programs with nondeterminism. We show that lexicographic RSMs provide a tool for compositional reasoning about almost-sure termination, and for probabilistic programs with linear arithmetic they can be synthesized efficiently (in polynomial time). We also show that with additional restrictions even asymptotic bounds on expected termination time can be obtained through lexicographic RSMs. Finally, we present experimental results on benchmarks adapted from previous work to demonstrate the effectiveness of our approach. article_number: '34' author: - first_name: Sheshansh full_name: Agrawal, Sheshansh last_name: Agrawal - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Petr full_name: Novotny, Petr id: 3CC3B868-F248-11E8-B48F-1D18A9856A87 last_name: Novotny citation: ama: 'Agrawal S, Chatterjee K, Novotný P. Lexicographic ranking supermartingales: an efficient approach to termination of probabilistic programs. In: Vol 2. ACM; 2018. doi:10.1145/3158122' apa: 'Agrawal, S., Chatterjee, K., & Novotný, P. (2018). Lexicographic ranking supermartingales: an efficient approach to termination of probabilistic programs (Vol. 2). Presented at the POPL: Principles of Programming Languages, Los Angeles, CA, USA: ACM. https://doi.org/10.1145/3158122' chicago: 'Agrawal, Sheshansh, Krishnendu Chatterjee, and Petr Novotný. “Lexicographic Ranking Supermartingales: An Efficient Approach to Termination of Probabilistic Programs,” Vol. 2. ACM, 2018. https://doi.org/10.1145/3158122.' ieee: 'S. Agrawal, K. Chatterjee, and P. Novotný, “Lexicographic ranking supermartingales: an efficient approach to termination of probabilistic programs,” presented at the POPL: Principles of Programming Languages, Los Angeles, CA, USA, 2018, vol. 2, no. POPL.' ista: 'Agrawal S, Chatterjee K, Novotný P. 2018. Lexicographic ranking supermartingales: an efficient approach to termination of probabilistic programs. POPL: Principles of Programming Languages vol. 2, 34.' mla: 'Agrawal, Sheshansh, et al. Lexicographic Ranking Supermartingales: An Efficient Approach to Termination of Probabilistic Programs. Vol. 2, no. POPL, 34, ACM, 2018, doi:10.1145/3158122.' short: S. Agrawal, K. Chatterjee, P. Novotný, in:, ACM, 2018. conference: end_date: 2018-01-13 location: Los Angeles, CA, USA name: 'POPL: Principles of Programming Languages' start_date: 2018-01-07 date_created: 2018-12-11T11:45:50Z date_published: 2018-01-01T00:00:00Z date_updated: 2021-01-12T07:42:07Z day: '01' department: - _id: KrCh doi: 10.1145/3158122 external_id: arxiv: - '1709.04037' intvolume: ' 2' issue: POPL language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1709.04037 month: '01' oa: 1 oa_version: Preprint project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering publication_status: published publisher: ACM publist_id: '7540' quality_controlled: '1' status: public title: 'Lexicographic ranking supermartingales: an efficient approach to termination of probabilistic programs' type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2 year: '2018' ... --- _id: '59' abstract: - lang: eng text: Graph-based games are an important tool in computer science. They have applications in synthesis, verification, refinement, and far beyond. We review graphbased games with objectives on infinite plays. We give definitions and algorithms to solve the games and to give a winning strategy. The objectives we consider are mostly Boolean, but we also look at quantitative graph-based games and their objectives. Synthesis aims to turn temporal logic specifications into correct reactive systems. We explain the reduction of synthesis to graph-based games (or equivalently tree automata) using synthesis of LTL specifications as an example. We treat the classical approach that uses determinization of parity automata and more modern approaches. author: - first_name: Roderick full_name: Bloem, Roderick last_name: Bloem - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Barbara full_name: Jobstmann, Barbara last_name: Jobstmann citation: ama: 'Bloem R, Chatterjee K, Jobstmann B. Graph games and reactive synthesis. In: Henzinger TA, Clarke EM, Veith H, Bloem R, eds. Handbook of Model Checking. 1st ed. Springer; 2018:921-962. doi:10.1007/978-3-319-10575-8_27' apa: Bloem, R., Chatterjee, K., & Jobstmann, B. (2018). Graph games and reactive synthesis. In T. A. Henzinger, E. M. Clarke, H. Veith, & R. Bloem (Eds.), Handbook of Model Checking (1st ed., pp. 921–962). Springer. https://doi.org/10.1007/978-3-319-10575-8_27 chicago: Bloem, Roderick, Krishnendu Chatterjee, and Barbara Jobstmann. “Graph Games and Reactive Synthesis.” In Handbook of Model Checking, edited by Thomas A Henzinger, Edmund M. Clarke, Helmut Veith, and Roderick Bloem, 1st ed., 921–62. Springer, 2018. https://doi.org/10.1007/978-3-319-10575-8_27. ieee: R. Bloem, K. Chatterjee, and B. Jobstmann, “Graph games and reactive synthesis,” in Handbook of Model Checking, 1st ed., T. A. Henzinger, E. M. Clarke, H. Veith, and R. Bloem, Eds. Springer, 2018, pp. 921–962. ista: 'Bloem R, Chatterjee K, Jobstmann B. 2018.Graph games and reactive synthesis. In: Handbook of Model Checking. , 921–962.' mla: Bloem, Roderick, et al. “Graph Games and Reactive Synthesis.” Handbook of Model Checking, edited by Thomas A Henzinger et al., 1st ed., Springer, 2018, pp. 921–62, doi:10.1007/978-3-319-10575-8_27. short: R. Bloem, K. Chatterjee, B. Jobstmann, in:, T.A. Henzinger, E.M. Clarke, H. Veith, R. Bloem (Eds.), Handbook of Model Checking, 1st ed., Springer, 2018, pp. 921–962. date_created: 2018-12-11T11:44:24Z date_published: 2018-05-19T00:00:00Z date_updated: 2021-01-12T08:05:10Z day: '19' department: - _id: KrCh doi: 10.1007/978-3-319-10575-8_27 edition: '1' editor: - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Edmund M. full_name: Clarke, Edmund M. last_name: Clarke - first_name: Helmut full_name: Veith, Helmut last_name: Veith - first_name: Roderick full_name: Bloem, Roderick last_name: Bloem language: - iso: eng month: '05' oa_version: None page: 921 - 962 publication: Handbook of Model Checking publication_identifier: isbn: - 978-3-319-10574-1 publication_status: published publisher: Springer publist_id: '7995' quality_controlled: '1' scopus_import: 1 status: public title: Graph games and reactive synthesis type: book_chapter user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2018' ... --- _id: '86' abstract: - lang: eng text: Responsiveness—the requirement that every request to a system be eventually handled—is one of the fundamental liveness properties of a reactive system. Average response time is a quantitative measure for the responsiveness requirement used commonly in performance evaluation. We show how average response time can be computed on state-transition graphs, on Markov chains, and on game graphs. In all three cases, we give polynomial-time algorithms. acknowledgement: 'This research was supported in part by the Austrian Science Fund (FWF) under grants S11402-N23, S11407-N23 (RiSE/SHiNE) and Z211-N23 (Wittgenstein Award), ERC Start grant (279307: Graph Games), Vienna Science and Technology Fund (WWTF) through project ICT15-003 and by the National Science Centre (NCN), Poland under grant 2014/15/D/ST6/04543.' alternative_title: - LNCS author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Jan full_name: Otop, Jan id: 2FC5DA74-F248-11E8-B48F-1D18A9856A87 last_name: Otop citation: ama: 'Chatterjee K, Henzinger TA, Otop J. Computing average response time. In: Lohstroh M, Derler P, Sirjani M, eds. Principles of Modeling. Vol 10760. Springer; 2018:143-161. doi:10.1007/978-3-319-95246-8_9' apa: Chatterjee, K., Henzinger, T. A., & Otop, J. (2018). Computing average response time. In M. Lohstroh, P. Derler, & M. Sirjani (Eds.), Principles of Modeling (Vol. 10760, pp. 143–161). Springer. https://doi.org/10.1007/978-3-319-95246-8_9 chicago: Chatterjee, Krishnendu, Thomas A Henzinger, and Jan Otop. “Computing Average Response Time.” In Principles of Modeling, edited by Marten Lohstroh, Patricia Derler, and Marjan Sirjani, 10760:143–61. Springer, 2018. https://doi.org/10.1007/978-3-319-95246-8_9. ieee: K. Chatterjee, T. A. Henzinger, and J. Otop, “Computing average response time,” in Principles of Modeling, vol. 10760, M. Lohstroh, P. Derler, and M. Sirjani, Eds. Springer, 2018, pp. 143–161. ista: 'Chatterjee K, Henzinger TA, Otop J. 2018.Computing average response time. In: Principles of Modeling. LNCS, vol. 10760, 143–161.' mla: Chatterjee, Krishnendu, et al. “Computing Average Response Time.” Principles of Modeling, edited by Marten Lohstroh et al., vol. 10760, Springer, 2018, pp. 143–61, doi:10.1007/978-3-319-95246-8_9. short: K. Chatterjee, T.A. Henzinger, J. Otop, in:, M. Lohstroh, P. Derler, M. Sirjani (Eds.), Principles of Modeling, Springer, 2018, pp. 143–161. date_created: 2018-12-11T11:44:33Z date_published: 2018-07-20T00:00:00Z date_updated: 2021-01-12T08:20:14Z day: '20' ddc: - '000' department: - _id: KrCh - _id: ToHe doi: 10.1007/978-3-319-95246-8_9 ec_funded: 1 editor: - first_name: Marten full_name: Lohstroh, Marten last_name: Lohstroh - first_name: Patricia full_name: Derler, Patricia last_name: Derler - first_name: Marjan full_name: Sirjani, Marjan last_name: Sirjani file: - access_level: open_access checksum: 9995c6ce6957333baf616fc4f20be597 content_type: application/pdf creator: dernst date_created: 2019-11-19T08:22:18Z date_updated: 2020-07-14T12:48:14Z file_id: '7053' file_name: 2018_PrinciplesModeling_Chatterjee.pdf file_size: 516307 relation: main_file file_date_updated: 2020-07-14T12:48:14Z has_accepted_license: '1' intvolume: ' 10760' language: - iso: eng month: '07' oa: 1 oa_version: Submitted Version page: 143 - 161 project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: The Wittgenstein Prize - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication: Principles of Modeling publication_status: published publisher: Springer publist_id: '7968' quality_controlled: '1' scopus_import: 1 status: public title: Computing average response time type: book_chapter user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 10760 year: '2018' ... --- _id: '454' abstract: - lang: eng text: Direct reciprocity is a mechanism for cooperation among humans. Many of our daily interactions are repeated. We interact repeatedly with our family, friends, colleagues, members of the local and even global community. In the theory of repeated games, it is a tacit assumption that the various games that a person plays simultaneously have no effect on each other. Here we introduce a general framework that allows us to analyze “crosstalk” between a player’s concurrent games. In the presence of crosstalk, the action a person experiences in one game can alter the person’s decision in another. We find that crosstalk impedes the maintenance of cooperation and requires stronger levels of forgiveness. The magnitude of the effect depends on the population structure. In more densely connected social groups, crosstalk has a stronger effect. A harsh retaliator, such as Tit-for-Tat, is unable to counteract crosstalk. The crosstalk framework provides a unified interpretation of direct and upstream reciprocity in the context of repeated games. acknowledgement: "This work was supported by the European Research Council (ERC) start grant 279307: Graph Games (C.K.), Austrian Science Fund (FWF) grant no P23499-N23 (C.K.), FWF\r\nNFN grant no S11407-N23 RiSE/SHiNE (C.K.), Office of Naval Research grant N00014-16-1-2914 (M.A.N.), National Cancer Institute grant CA179991 (M.A.N.) and by the John Templeton Foundation. J.G.R. is supported by an Erwin Schrödinger fellowship\r\n(Austrian Science Fund FWF J-3996). C.H. acknowledges generous support from the\r\nISTFELLOW program. The Program for Evolutionary Dynamics is supported in part by\r\na gift from B Wu and Eric Larson." article_number: '555' article_processing_charge: No author: - first_name: Johannes full_name: Reiter, Johannes id: 4A918E98-F248-11E8-B48F-1D18A9856A87 last_name: Reiter orcid: 0000-0002-0170-7353 - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X - first_name: David full_name: Rand, David last_name: Rand - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: Reiter J, Hilbe C, Rand D, Chatterjee K, Nowak M. Crosstalk in concurrent repeated games impedes direct reciprocity and requires stronger levels of forgiveness. Nature Communications. 2018;9(1). doi:10.1038/s41467-017-02721-8 apa: Reiter, J., Hilbe, C., Rand, D., Chatterjee, K., & Nowak, M. (2018). Crosstalk in concurrent repeated games impedes direct reciprocity and requires stronger levels of forgiveness. Nature Communications. Nature Publishing Group. https://doi.org/10.1038/s41467-017-02721-8 chicago: Reiter, Johannes, Christian Hilbe, David Rand, Krishnendu Chatterjee, and Martin Nowak. “Crosstalk in Concurrent Repeated Games Impedes Direct Reciprocity and Requires Stronger Levels of Forgiveness.” Nature Communications. Nature Publishing Group, 2018. https://doi.org/10.1038/s41467-017-02721-8. ieee: J. Reiter, C. Hilbe, D. Rand, K. Chatterjee, and M. Nowak, “Crosstalk in concurrent repeated games impedes direct reciprocity and requires stronger levels of forgiveness,” Nature Communications, vol. 9, no. 1. Nature Publishing Group, 2018. ista: Reiter J, Hilbe C, Rand D, Chatterjee K, Nowak M. 2018. Crosstalk in concurrent repeated games impedes direct reciprocity and requires stronger levels of forgiveness. Nature Communications. 9(1), 555. mla: Reiter, Johannes, et al. “Crosstalk in Concurrent Repeated Games Impedes Direct Reciprocity and Requires Stronger Levels of Forgiveness.” Nature Communications, vol. 9, no. 1, 555, Nature Publishing Group, 2018, doi:10.1038/s41467-017-02721-8. short: J. Reiter, C. Hilbe, D. Rand, K. Chatterjee, M. Nowak, Nature Communications 9 (2018). date_created: 2018-12-11T11:46:34Z date_published: 2018-02-07T00:00:00Z date_updated: 2023-09-11T12:51:03Z day: '07' ddc: - '004' department: - _id: KrCh doi: 10.1038/s41467-017-02721-8 ec_funded: 1 external_id: isi: - '000424318200001' file: - access_level: open_access checksum: b6b90367545b4c615891c960ab0567f1 content_type: application/pdf creator: system date_created: 2018-12-12T10:09:18Z date_updated: 2020-07-14T12:46:31Z file_id: '4741' file_name: IST-2018-964-v1+1_2018_Hilbe_Crosstalk_in.pdf file_size: 843646 relation: main_file file_date_updated: 2020-07-14T12:46:31Z has_accepted_license: '1' intvolume: ' 9' isi: 1 issue: '1' language: - iso: eng license: https://creativecommons.org/licenses/by/4.0/ month: '02' oa: 1 oa_version: Published Version project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Nature Communications publication_status: published publisher: Nature Publishing Group publist_id: '7368' pubrep_id: '964' quality_controlled: '1' scopus_import: '1' status: public title: Crosstalk in concurrent repeated games impedes direct reciprocity and requires stronger levels of forgiveness tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 9 year: '2018' ... --- _id: '143' abstract: - lang: eng text: 'Vector Addition Systems with States (VASS) provide a well-known and fundamental model for the analysis of concurrent processes, parameterized systems, and are also used as abstract models of programs in resource bound analysis. In this paper we study the problem of obtaining asymptotic bounds on the termination time of a given VASS. In particular, we focus on the practically important case of obtaining polynomial bounds on termination time. Our main contributions are as follows: First, we present a polynomial-time algorithm for deciding whether a given VASS has a linear asymptotic complexity. We also show that if the complexity of a VASS is not linear, it is at least quadratic. Second, we classify VASS according to quantitative properties of their cycles. We show that certain singularities in these properties are the key reason for non-polynomial asymptotic complexity of VASS. In absence of singularities, we show that the asymptotic complexity is always polynomial and of the form Θ(nk), for some integer k d, where d is the dimension of the VASS. We present a polynomial-time algorithm computing the optimal k. For general VASS, the same algorithm, which is based on a complete technique for the construction of ranking functions in VASS, produces a valid lower bound, i.e., a k such that the termination complexity is (nk). Our results are based on new insights into the geometry of VASS dynamics, which hold the potential for further applicability to VASS analysis.' alternative_title: - ACM/IEEE Symposium on Logic in Computer Science article_processing_charge: No author: - first_name: Tomáš full_name: Brázdil, Tomáš last_name: Brázdil - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Antonín full_name: Kučera, Antonín last_name: Kučera - first_name: Petr full_name: Novotny, Petr id: 3CC3B868-F248-11E8-B48F-1D18A9856A87 last_name: Novotny - first_name: Dominik full_name: Velan, Dominik last_name: Velan - first_name: Florian full_name: Zuleger, Florian last_name: Zuleger citation: ama: 'Brázdil T, Chatterjee K, Kučera A, Novotný P, Velan D, Zuleger F. Efficient algorithms for asymptotic bounds on termination time in VASS. In: Vol F138033. IEEE; 2018:185-194. doi:10.1145/3209108.3209191' apa: 'Brázdil, T., Chatterjee, K., Kučera, A., Novotný, P., Velan, D., & Zuleger, F. (2018). Efficient algorithms for asymptotic bounds on termination time in VASS (Vol. F138033, pp. 185–194). Presented at the LICS: Logic in Computer Science, Oxford, United Kingdom: IEEE. https://doi.org/10.1145/3209108.3209191' chicago: Brázdil, Tomáš, Krishnendu Chatterjee, Antonín Kučera, Petr Novotný, Dominik Velan, and Florian Zuleger. “Efficient Algorithms for Asymptotic Bounds on Termination Time in VASS,” F138033:185–94. IEEE, 2018. https://doi.org/10.1145/3209108.3209191. ieee: 'T. Brázdil, K. Chatterjee, A. Kučera, P. Novotný, D. Velan, and F. Zuleger, “Efficient algorithms for asymptotic bounds on termination time in VASS,” presented at the LICS: Logic in Computer Science, Oxford, United Kingdom, 2018, vol. F138033, pp. 185–194.' ista: 'Brázdil T, Chatterjee K, Kučera A, Novotný P, Velan D, Zuleger F. 2018. Efficient algorithms for asymptotic bounds on termination time in VASS. LICS: Logic in Computer Science, ACM/IEEE Symposium on Logic in Computer Science, vol. F138033, 185–194.' mla: Brázdil, Tomáš, et al. Efficient Algorithms for Asymptotic Bounds on Termination Time in VASS. Vol. F138033, IEEE, 2018, pp. 185–94, doi:10.1145/3209108.3209191. short: T. Brázdil, K. Chatterjee, A. Kučera, P. Novotný, D. Velan, F. Zuleger, in:, IEEE, 2018, pp. 185–194. conference: end_date: 2018-07-12 location: Oxford, United Kingdom name: 'LICS: Logic in Computer Science' start_date: 2018-07-09 date_created: 2018-12-11T11:44:51Z date_published: 2018-07-09T00:00:00Z date_updated: 2023-09-11T13:23:42Z day: '09' department: - _id: KrCh doi: 10.1145/3209108.3209191 ec_funded: 1 external_id: isi: - '000545262800020' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1804.10985 month: '07' oa: 1 oa_version: Preprint page: 185 - 194 project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering publication_identifier: isbn: - 978-1-4503-5583-4 publication_status: published publisher: IEEE publist_id: '7780' quality_controlled: '1' scopus_import: '1' status: public title: Efficient algorithms for asymptotic bounds on termination time in VASS type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: F138033 year: '2018' ... --- _id: '157' abstract: - lang: eng text: 'Social dilemmas occur when incentives for individuals are misaligned with group interests 1-7 . According to the ''tragedy of the commons'', these misalignments can lead to overexploitation and collapse of public resources. The resulting behaviours can be analysed with the tools of game theory 8 . The theory of direct reciprocity 9-15 suggests that repeated interactions can alleviate such dilemmas, but previous work has assumed that the public resource remains constant over time. Here we introduce the idea that the public resource is instead changeable and depends on the strategic choices of individuals. An intuitive scenario is that cooperation increases the public resource, whereas defection decreases it. Thus, cooperation allows the possibility of playing a more valuable game with higher payoffs, whereas defection leads to a less valuable game. We analyse this idea using the theory of stochastic games 16-19 and evolutionary game theory. We find that the dependence of the public resource on previous interactions can greatly enhance the propensity for cooperation. For these results, the interaction between reciprocity and payoff feedback is crucial: neither repeated interactions in a constant environment nor single interactions in a changing environment yield similar cooperation rates. Our framework shows which feedbacks between exploitation and environment - either naturally occurring or designed - help to overcome social dilemmas.' acknowledgement: "European Research Council Start Grant 279307, Austrian Science Fund (FWF) grant P23499-N23, \r\nC.H. acknowledges support from the ISTFELLOW programme." article_processing_charge: No author: - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X - first_name: Štepán full_name: Šimsa, Štepán last_name: Šimsa - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: Hilbe C, Šimsa Š, Chatterjee K, Nowak M. Evolution of cooperation in stochastic games. Nature. 2018;559(7713):246-249. doi:10.1038/s41586-018-0277-x apa: Hilbe, C., Šimsa, Š., Chatterjee, K., & Nowak, M. (2018). Evolution of cooperation in stochastic games. Nature. Nature Publishing Group. https://doi.org/10.1038/s41586-018-0277-x chicago: Hilbe, Christian, Štepán Šimsa, Krishnendu Chatterjee, and Martin Nowak. “Evolution of Cooperation in Stochastic Games.” Nature. Nature Publishing Group, 2018. https://doi.org/10.1038/s41586-018-0277-x. ieee: C. Hilbe, Š. Šimsa, K. Chatterjee, and M. Nowak, “Evolution of cooperation in stochastic games,” Nature, vol. 559, no. 7713. Nature Publishing Group, pp. 246–249, 2018. ista: Hilbe C, Šimsa Š, Chatterjee K, Nowak M. 2018. Evolution of cooperation in stochastic games. Nature. 559(7713), 246–249. mla: Hilbe, Christian, et al. “Evolution of Cooperation in Stochastic Games.” Nature, vol. 559, no. 7713, Nature Publishing Group, 2018, pp. 246–49, doi:10.1038/s41586-018-0277-x. short: C. Hilbe, Š. Šimsa, K. Chatterjee, M. Nowak, Nature 559 (2018) 246–249. date_created: 2018-12-11T11:44:56Z date_published: 2018-07-04T00:00:00Z date_updated: 2023-09-11T13:43:22Z day: '04' ddc: - '000' department: - _id: KrCh doi: 10.1038/s41586-018-0277-x ec_funded: 1 external_id: isi: - '000438240900054' file: - access_level: open_access checksum: 011ab905cf9a410bc2b96f15174d654d content_type: application/pdf creator: dernst date_created: 2019-11-19T08:09:57Z date_updated: 2020-07-14T12:45:02Z file_id: '7049' file_name: 2018_Nature_Hilbe.pdf file_size: 2834442 relation: main_file file_date_updated: 2020-07-14T12:45:02Z has_accepted_license: '1' intvolume: ' 559' isi: 1 issue: '7713' language: - iso: eng month: '07' oa: 1 oa_version: Submitted Version page: 246 - 249 project: - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Nature publication_status: published publisher: Nature Publishing Group publist_id: '7764' quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/engineering-cooperation/ scopus_import: '1' status: public title: Evolution of cooperation in stochastic games type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 559 year: '2018' ... --- _id: '310' abstract: - lang: eng text: A model of computation that is widely used in the formal analysis of reactive systems is symbolic algorithms. In this model the access to the input graph is restricted to consist of symbolic operations, which are expensive in comparison to the standard RAM operations. We give lower bounds on the number of symbolic operations for basic graph problems such as the computation of the strongly connected components and of the approximate diameter as well as for fundamental problems in model checking such as safety, liveness, and coliveness. Our lower bounds are linear in the number of vertices of the graph, even for constant-diameter graphs. For none of these problems lower bounds on the number of symbolic operations were known before. The lower bounds show an interesting separation of these problems from the reachability problem, which can be solved with O(D) symbolic operations, where D is the diameter of the graph. Additionally we present an approximation algorithm for the graph diameter which requires Õ(n/D) symbolic steps to achieve a (1 +ϵ)-approximation for any constant > 0. This compares to O(n/D) symbolic steps for the (naive) exact algorithm and O(D) symbolic steps for a 2-approximation. Finally we also give a refined analysis of the strongly connected components algorithms of [15], showing that it uses an optimal number of symbolic steps that is proportional to the sum of the diameters of the strongly connected components. article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Wolfgang full_name: Dvorák, Wolfgang last_name: Dvorák - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Veronika full_name: Loitzenbauer, Veronika last_name: Loitzenbauer citation: ama: 'Chatterjee K, Dvorák W, Henzinger MH, Loitzenbauer V. Lower bounds for symbolic computation on graphs: Strongly connected components, liveness, safety, and diameter. In: ACM; 2018:2341-2356. doi:10.1137/1.9781611975031.151' apa: 'Chatterjee, K., Dvorák, W., Henzinger, M. H., & Loitzenbauer, V. (2018). Lower bounds for symbolic computation on graphs: Strongly connected components, liveness, safety, and diameter (pp. 2341–2356). Presented at the SODA: Symposium on Discrete Algorithms, New Orleans, Louisiana, United States: ACM. https://doi.org/10.1137/1.9781611975031.151' chicago: 'Chatterjee, Krishnendu, Wolfgang Dvorák, Monika H Henzinger, and Veronika Loitzenbauer. “Lower Bounds for Symbolic Computation on Graphs: Strongly Connected Components, Liveness, Safety, and Diameter,” 2341–56. ACM, 2018. https://doi.org/10.1137/1.9781611975031.151.' ieee: 'K. Chatterjee, W. Dvorák, M. H. Henzinger, and V. Loitzenbauer, “Lower bounds for symbolic computation on graphs: Strongly connected components, liveness, safety, and diameter,” presented at the SODA: Symposium on Discrete Algorithms, New Orleans, Louisiana, United States, 2018, pp. 2341–2356.' ista: 'Chatterjee K, Dvorák W, Henzinger MH, Loitzenbauer V. 2018. Lower bounds for symbolic computation on graphs: Strongly connected components, liveness, safety, and diameter. SODA: Symposium on Discrete Algorithms, 2341–2356.' mla: 'Chatterjee, Krishnendu, et al. Lower Bounds for Symbolic Computation on Graphs: Strongly Connected Components, Liveness, Safety, and Diameter. ACM, 2018, pp. 2341–56, doi:10.1137/1.9781611975031.151.' short: K. Chatterjee, W. Dvorák, M.H. Henzinger, V. Loitzenbauer, in:, ACM, 2018, pp. 2341–2356. conference: end_date: 2018-01-10 location: New Orleans, Louisiana, United States name: 'SODA: Symposium on Discrete Algorithms' start_date: 2018-01-07 date_created: 2018-12-11T11:45:45Z date_published: 2018-01-01T00:00:00Z date_updated: 2023-09-13T08:50:16Z day: '01' department: - _id: KrCh doi: 10.1137/1.9781611975031.151 ec_funded: 1 external_id: arxiv: - '1711.09148' isi: - '000483921200152' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1711.09148 month: '01' oa: 1 oa_version: Preprint page: 2341 - 2356 project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication_status: published publisher: ACM publist_id: '7555' quality_controlled: '1' scopus_import: '1' status: public title: 'Lower bounds for symbolic computation on graphs: Strongly connected components, liveness, safety, and diameter' type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2018' ... --- _id: '5679' abstract: - lang: eng text: We study the almost-sure termination problem for probabilistic programs. First, we show that supermartingales with lower bounds on conditional absolute difference provide a sound approach for the almost-sure termination problem. Moreover, using this approach we can obtain explicit optimal bounds on tail probabilities of non-termination within a given number of steps. Second, we present a new approach based on Central Limit Theorem for the almost-sure termination problem, and show that this approach can establish almost-sure termination of programs which none of the existing approaches can handle. Finally, we discuss algorithmic approaches for the two above methods that lead to automated analysis techniques for almost-sure termination of probabilistic programs. alternative_title: - LNCS article_processing_charge: No author: - first_name: Mingzhang full_name: Huang, Mingzhang last_name: Huang - first_name: Hongfei full_name: Fu, Hongfei last_name: Fu - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X citation: ama: 'Huang M, Fu H, Chatterjee K. New approaches for almost-sure termination of probabilistic programs. In: Ryu S, ed. Vol 11275. Springer; 2018:181-201. doi:10.1007/978-3-030-02768-1_11' apa: 'Huang, M., Fu, H., & Chatterjee, K. (2018). New approaches for almost-sure termination of probabilistic programs. In S. Ryu (Ed.) (Vol. 11275, pp. 181–201). Presented at the 16th Asian Symposium on Programming Languages and Systems, APLAS, Wellington, New Zealand: Springer. https://doi.org/10.1007/978-3-030-02768-1_11' chicago: Huang, Mingzhang, Hongfei Fu, and Krishnendu Chatterjee. “New Approaches for Almost-Sure Termination of Probabilistic Programs.” edited by Sukyoung Ryu, 11275:181–201. Springer, 2018. https://doi.org/10.1007/978-3-030-02768-1_11. ieee: M. Huang, H. Fu, and K. Chatterjee, “New approaches for almost-sure termination of probabilistic programs,” presented at the 16th Asian Symposium on Programming Languages and Systems, APLAS, Wellington, New Zealand, 2018, vol. 11275, pp. 181–201. ista: Huang M, Fu H, Chatterjee K. 2018. New approaches for almost-sure termination of probabilistic programs. 16th Asian Symposium on Programming Languages and Systems, APLAS, LNCS, vol. 11275, 181–201. mla: Huang, Mingzhang, et al. New Approaches for Almost-Sure Termination of Probabilistic Programs. Edited by Sukyoung Ryu, vol. 11275, Springer, 2018, pp. 181–201, doi:10.1007/978-3-030-02768-1_11. short: M. Huang, H. Fu, K. Chatterjee, in:, S. Ryu (Ed.), Springer, 2018, pp. 181–201. conference: end_date: 2018-12-06 location: Wellington, New Zealand name: 16th Asian Symposium on Programming Languages and Systems, APLAS start_date: 2018-12-02 date_created: 2018-12-16T22:59:20Z date_published: 2018-12-01T00:00:00Z date_updated: 2023-09-13T09:02:22Z day: '01' department: - _id: KrCh doi: 10.1007/978-3-030-02768-1_11 editor: - first_name: Sukyoung full_name: Ryu, Sukyoung last_name: Ryu external_id: arxiv: - '1806.06683' isi: - '000916310900011' intvolume: ' 11275' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: http://arxiv.org/abs/1806.06683 month: '12' oa: 1 oa_version: Preprint page: 181-201 project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication_identifier: isbn: - '9783030027674' issn: - '03029743' publisher: Springer quality_controlled: '1' scopus_import: '1' status: public title: New approaches for almost-sure termination of probabilistic programs type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 11275 year: '2018' ... --- _id: '419' abstract: - lang: eng text: 'Reciprocity is a major factor in human social life and accounts for a large part of cooperation in our communities. Direct reciprocity arises when repeated interactions occur between the same individuals. The framework of iterated games formalizes this phenomenon. Despite being introduced more than five decades ago, the concept keeps offering beautiful surprises. Recent theoretical research driven by new mathematical tools has proposed a remarkable dichotomy among the crucial strategies: successful individuals either act as partners or as rivals. Rivals strive for unilateral advantages by applying selfish or extortionate strategies. Partners aim to share the payoff for mutual cooperation, but are ready to fight back when being exploited. Which of these behaviours evolves depends on the environment. Whereas small population sizes and a limited number of rounds favour rivalry, partner strategies are selected when populations are large and relationships stable. Only partners allow for evolution of cooperation, while the rivals’ attempt to put themselves first leads to defection. Hilbe et al. synthesize recent theoretical work on zero-determinant and ‘rival’ versus ‘partner’ strategies in social dilemmas. They describe the environments under which these contrasting selfish or cooperative strategies emerge in evolution.' article_processing_charge: No article_type: review author: - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: Hilbe C, Chatterjee K, Nowak M. Partners and rivals in direct reciprocity. Nature Human Behaviour. 2018;2:469–477. doi:10.1038/s41562-018-0320-9 apa: Hilbe, C., Chatterjee, K., & Nowak, M. (2018). Partners and rivals in direct reciprocity. Nature Human Behaviour. Nature Publishing Group. https://doi.org/10.1038/s41562-018-0320-9 chicago: Hilbe, Christian, Krishnendu Chatterjee, and Martin Nowak. “Partners and Rivals in Direct Reciprocity.” Nature Human Behaviour. Nature Publishing Group, 2018. https://doi.org/10.1038/s41562-018-0320-9. ieee: C. Hilbe, K. Chatterjee, and M. Nowak, “Partners and rivals in direct reciprocity,” Nature Human Behaviour, vol. 2. Nature Publishing Group, pp. 469–477, 2018. ista: Hilbe C, Chatterjee K, Nowak M. 2018. Partners and rivals in direct reciprocity. Nature Human Behaviour. 2, 469–477. mla: Hilbe, Christian, et al. “Partners and Rivals in Direct Reciprocity.” Nature Human Behaviour, vol. 2, Nature Publishing Group, 2018, pp. 469–477, doi:10.1038/s41562-018-0320-9. short: C. Hilbe, K. Chatterjee, M. Nowak, Nature Human Behaviour 2 (2018) 469–477. date_created: 2018-12-11T11:46:22Z date_published: 2018-03-19T00:00:00Z date_updated: 2023-09-13T09:38:54Z day: '19' ddc: - '000' department: - _id: KrCh doi: 10.1038/s41562-018-0320-9 ec_funded: 1 external_id: isi: - '000446612000016' file: - access_level: open_access checksum: 571b8cc0ba14e8d5d8b18e439a9835eb content_type: application/pdf creator: dernst date_created: 2019-11-19T08:19:51Z date_updated: 2020-07-14T12:46:25Z file_id: '7052' file_name: 2018_NatureHumanBeh_Hilbe.pdf file_size: 598033 relation: main_file file_date_updated: 2020-07-14T12:46:25Z has_accepted_license: '1' intvolume: ' 2' isi: 1 language: - iso: eng month: '03' oa: 1 oa_version: Submitted Version page: 469–477 project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Nature Human Behaviour publication_status: published publisher: Nature Publishing Group publist_id: '7404' quality_controlled: '1' related_material: link: - relation: erratum url: http://doi.org/10.1038/s41562-018-0342-3 scopus_import: '1' status: public title: Partners and rivals in direct reciprocity type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 2 year: '2018' ... --- _id: '79' abstract: - lang: eng text: 'Markov Decision Processes (MDPs) are a popular class of models suitable for solving control decision problems in probabilistic reactive systems. We consider parametric MDPs (pMDPs) that include parameters in some of the transition probabilities to account for stochastic uncertainties of the environment such as noise or input disturbances. We study pMDPs with reachability objectives where the parameter values are unknown and impossible to measure directly during execution, but there is a probability distribution known over the parameter values. We study for the first time computing parameter-independent strategies that are expectation optimal, i.e., optimize the expected reachability probability under the probability distribution over the parameters. We present an encoding of our problem to partially observable MDPs (POMDPs), i.e., a reduction of our problem to computing optimal strategies in POMDPs. We evaluate our method experimentally on several benchmarks: a motivating (repeated) learner model; a series of benchmarks of varying configurations of a robot moving on a grid; and a consensus protocol.' alternative_title: - LNCS article_processing_charge: No author: - first_name: Sebastian full_name: Arming, Sebastian last_name: Arming - first_name: Ezio full_name: Bartocci, Ezio last_name: Bartocci - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Joost P full_name: Katoen, Joost P id: 4524F760-F248-11E8-B48F-1D18A9856A87 last_name: Katoen - first_name: Ana full_name: Sokolova, Ana last_name: Sokolova citation: ama: 'Arming S, Bartocci E, Chatterjee K, Katoen JP, Sokolova A. Parameter-independent strategies for pMDPs via POMDPs. In: Vol 11024. Springer; 2018:53-70. doi:10.1007/978-3-319-99154-2_4' apa: 'Arming, S., Bartocci, E., Chatterjee, K., Katoen, J. P., & Sokolova, A. (2018). Parameter-independent strategies for pMDPs via POMDPs (Vol. 11024, pp. 53–70). Presented at the QEST: Quantitative Evaluation of Systems, Beijing, China: Springer. https://doi.org/10.1007/978-3-319-99154-2_4' chicago: Arming, Sebastian, Ezio Bartocci, Krishnendu Chatterjee, Joost P Katoen, and Ana Sokolova. “Parameter-Independent Strategies for PMDPs via POMDPs,” 11024:53–70. Springer, 2018. https://doi.org/10.1007/978-3-319-99154-2_4. ieee: 'S. Arming, E. Bartocci, K. Chatterjee, J. P. Katoen, and A. Sokolova, “Parameter-independent strategies for pMDPs via POMDPs,” presented at the QEST: Quantitative Evaluation of Systems, Beijing, China, 2018, vol. 11024, pp. 53–70.' ista: 'Arming S, Bartocci E, Chatterjee K, Katoen JP, Sokolova A. 2018. Parameter-independent strategies for pMDPs via POMDPs. QEST: Quantitative Evaluation of Systems, LNCS, vol. 11024, 53–70.' mla: Arming, Sebastian, et al. Parameter-Independent Strategies for PMDPs via POMDPs. Vol. 11024, Springer, 2018, pp. 53–70, doi:10.1007/978-3-319-99154-2_4. short: S. Arming, E. Bartocci, K. Chatterjee, J.P. Katoen, A. Sokolova, in:, Springer, 2018, pp. 53–70. conference: end_date: 2018-09-07 location: Beijing, China name: 'QEST: Quantitative Evaluation of Systems' start_date: 2018-09-04 date_created: 2018-12-11T11:44:31Z date_published: 2018-08-15T00:00:00Z date_updated: 2023-09-13T09:38:28Z day: '15' department: - _id: KrCh - _id: ToHe doi: 10.1007/978-3-319-99154-2_4 external_id: arxiv: - '1806.05126' isi: - '000548912200004' intvolume: ' 11024' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1806.05126 month: '08' oa: 1 oa_version: Preprint page: 53-70 publication_status: published publisher: Springer publist_id: '7975' quality_controlled: '1' scopus_import: '1' status: public title: Parameter-independent strategies for pMDPs via POMDPs type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 11024 year: '2018' ... --- _id: '297' abstract: - lang: eng text: Graph games played by two players over finite-state graphs are central in many problems in computer science. In particular, graph games with ω -regular winning conditions, specified as parity objectives, which can express properties such as safety, liveness, fairness, are the basic framework for verification and synthesis of reactive systems. The decisions for a player at various states of the graph game are represented as strategies. While the algorithmic problem for solving graph games with parity objectives has been widely studied, the most prominent data-structure for strategy representation in graph games has been binary decision diagrams (BDDs). However, due to the bit-level representation, BDDs do not retain the inherent flavor of the decisions of strategies, and are notoriously hard to minimize to obtain succinct representation. In this work we propose decision trees for strategy representation in graph games. Decision trees retain the flavor of decisions of strategies and allow entropy-based minimization to obtain succinct trees. However, decision trees work in settings (e.g., probabilistic models) where errors are allowed, and overfitting of data is typically avoided. In contrast, for strategies in graph games no error is allowed, and the decision tree must represent the entire strategy. We develop new techniques to extend decision trees to overcome the above obstacles, while retaining the entropy-based techniques to obtain succinct trees. We have implemented our techniques to extend the existing decision tree solvers. We present experimental results for problems in reactive synthesis to show that decision trees provide a much more efficient data-structure for strategy representation as compared to BDDs. alternative_title: - LNCS article_processing_charge: No author: - first_name: Tomáš full_name: Brázdil, Tomáš last_name: Brázdil - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Jan full_name: Kretinsky, Jan id: 44CEF464-F248-11E8-B48F-1D18A9856A87 last_name: Kretinsky orcid: 0000-0002-8122-2881 - first_name: Viktor full_name: Toman, Viktor id: 3AF3DA7C-F248-11E8-B48F-1D18A9856A87 last_name: Toman orcid: 0000-0001-9036-063X citation: ama: 'Brázdil T, Chatterjee K, Kretinsky J, Toman V. Strategy representation by decision trees in reactive synthesis. In: Vol 10805. Springer; 2018:385-407. doi:10.1007/978-3-319-89960-2_21' apa: 'Brázdil, T., Chatterjee, K., Kretinsky, J., & Toman, V. (2018). Strategy representation by decision trees in reactive synthesis (Vol. 10805, pp. 385–407). Presented at the TACAS 2018: Tools and Algorithms for the Construction and Analysis of Systems, Thessaloniki, Greece: Springer. https://doi.org/10.1007/978-3-319-89960-2_21' chicago: Brázdil, Tomáš, Krishnendu Chatterjee, Jan Kretinsky, and Viktor Toman. “Strategy Representation by Decision Trees in Reactive Synthesis,” 10805:385–407. Springer, 2018. https://doi.org/10.1007/978-3-319-89960-2_21. ieee: 'T. Brázdil, K. Chatterjee, J. Kretinsky, and V. Toman, “Strategy representation by decision trees in reactive synthesis,” presented at the TACAS 2018: Tools and Algorithms for the Construction and Analysis of Systems, Thessaloniki, Greece, 2018, vol. 10805, pp. 385–407.' ista: 'Brázdil T, Chatterjee K, Kretinsky J, Toman V. 2018. Strategy representation by decision trees in reactive synthesis. TACAS 2018: Tools and Algorithms for the Construction and Analysis of Systems, LNCS, vol. 10805, 385–407.' mla: Brázdil, Tomáš, et al. Strategy Representation by Decision Trees in Reactive Synthesis. Vol. 10805, Springer, 2018, pp. 385–407, doi:10.1007/978-3-319-89960-2_21. short: T. Brázdil, K. Chatterjee, J. Kretinsky, V. Toman, in:, Springer, 2018, pp. 385–407. conference: end_date: 2018-04-20 location: Thessaloniki, Greece name: 'TACAS 2018: Tools and Algorithms for the Construction and Analysis of Systems' start_date: 2018-04-14 date_created: 2018-12-11T11:45:41Z date_published: 2018-04-12T00:00:00Z date_updated: 2023-09-19T09:57:08Z day: '12' ddc: - '000' department: - _id: KrCh - _id: ToHe doi: 10.1007/978-3-319-89960-2_21 ec_funded: 1 external_id: isi: - '000546326300021' file: - access_level: open_access checksum: b13874ffb114932ad9cc2586b7469db4 content_type: application/pdf creator: dernst date_created: 2018-12-17T16:29:08Z date_updated: 2020-07-14T12:45:57Z file_id: '5723' file_name: 2018_LNCS_Brazdil.pdf file_size: 1829940 relation: main_file file_date_updated: 2020-07-14T12:45:57Z has_accepted_license: '1' intvolume: ' 10805' isi: 1 language: - iso: eng month: '04' oa: 1 oa_version: Published Version page: 385 - 407 project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program publication_status: published publisher: Springer publist_id: '7584' quality_controlled: '1' scopus_import: '1' status: public title: Strategy representation by decision trees in reactive synthesis tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 10805 year: '2018' ... --- _id: '141' abstract: - lang: eng text: 'Given a model and a specification, the fundamental model-checking problem asks for algorithmic verification of whether the model satisfies the specification. We consider graphs and Markov decision processes (MDPs), which are fundamental models for reactive systems. One of the very basic specifications that arise in verification of reactive systems is the strong fairness (aka Streett) objective. Given different types of requests and corresponding grants, the objective requires that for each type, if the request event happens infinitely often, then the corresponding grant event must also happen infinitely often. All ω -regular objectives can be expressed as Streett objectives and hence they are canonical in verification. To handle the state-space explosion, symbolic algorithms are required that operate on a succinct implicit representation of the system rather than explicitly accessing the system. While explicit algorithms for graphs and MDPs with Streett objectives have been widely studied, there has been no improvement of the basic symbolic algorithms. The worst-case numbers of symbolic steps required for the basic symbolic algorithms are as follows: quadratic for graphs and cubic for MDPs. In this work we present the first sub-quadratic symbolic algorithm for graphs with Streett objectives, and our algorithm is sub-quadratic even for MDPs. Based on our algorithmic insights we present an implementation of the new symbolic approach and show that it improves the existing approach on several academic benchmark examples.' acknowledgement: 'Acknowledgements. K. C. and M. H. are partially supported by the Vienna Science and Technology Fund (WWTF) grant ICT15-003. K. C. is partially supported by the Austrian Science Fund (FWF): S11407-N23 (RiSE/SHiNE), and an ERC Start Grant (279307: Graph Games). V. T. is partially supported by the European Union’s Horizon 2020 research and innovation programme under the Marie Sk lodowska-Curie Grant Agreement No. 665385.' alternative_title: - LNCS article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Veronika full_name: Loitzenbauer, Veronika last_name: Loitzenbauer - first_name: Simin full_name: Oraee, Simin last_name: Oraee - first_name: Viktor full_name: Toman, Viktor id: 3AF3DA7C-F248-11E8-B48F-1D18A9856A87 last_name: Toman orcid: 0000-0001-9036-063X citation: ama: 'Chatterjee K, Henzinger MH, Loitzenbauer V, Oraee S, Toman V. Symbolic algorithms for graphs and Markov decision processes with fairness objectives. In: Vol 10982. Springer; 2018:178-197. doi:10.1007/978-3-319-96142-2_13' apa: 'Chatterjee, K., Henzinger, M. H., Loitzenbauer, V., Oraee, S., & Toman, V. (2018). Symbolic algorithms for graphs and Markov decision processes with fairness objectives (Vol. 10982, pp. 178–197). Presented at the CAV: Computer Aided Verification, Oxford, United Kingdom: Springer. https://doi.org/10.1007/978-3-319-96142-2_13' chicago: Chatterjee, Krishnendu, Monika H Henzinger, Veronika Loitzenbauer, Simin Oraee, and Viktor Toman. “Symbolic Algorithms for Graphs and Markov Decision Processes with Fairness Objectives,” 10982:178–97. Springer, 2018. https://doi.org/10.1007/978-3-319-96142-2_13. ieee: 'K. Chatterjee, M. H. Henzinger, V. Loitzenbauer, S. Oraee, and V. Toman, “Symbolic algorithms for graphs and Markov decision processes with fairness objectives,” presented at the CAV: Computer Aided Verification, Oxford, United Kingdom, 2018, vol. 10982, pp. 178–197.' ista: 'Chatterjee K, Henzinger MH, Loitzenbauer V, Oraee S, Toman V. 2018. Symbolic algorithms for graphs and Markov decision processes with fairness objectives. CAV: Computer Aided Verification, LNCS, vol. 10982, 178–197.' mla: Chatterjee, Krishnendu, et al. Symbolic Algorithms for Graphs and Markov Decision Processes with Fairness Objectives. Vol. 10982, Springer, 2018, pp. 178–97, doi:10.1007/978-3-319-96142-2_13. short: K. Chatterjee, M.H. Henzinger, V. Loitzenbauer, S. Oraee, V. Toman, in:, Springer, 2018, pp. 178–197. conference: end_date: 2018-07-17 location: Oxford, United Kingdom name: 'CAV: Computer Aided Verification' start_date: 2018-07-14 date_created: 2018-12-11T11:44:51Z date_published: 2018-07-18T00:00:00Z date_updated: 2023-09-19T09:59:55Z day: '18' ddc: - '000' department: - _id: KrCh doi: 10.1007/978-3-319-96142-2_13 ec_funded: 1 external_id: isi: - '000491469700013' file: - access_level: open_access checksum: 1a6ffa4febe8bb8ac28be3adb3eafebc content_type: application/pdf creator: dernst date_created: 2018-12-18T08:52:38Z date_updated: 2020-07-14T12:44:53Z file_id: '5737' file_name: 2018_LNCS_Chatterjee.pdf file_size: 675606 relation: main_file file_date_updated: 2020-07-14T12:44:53Z has_accepted_license: '1' intvolume: ' 10982' isi: 1 language: - iso: eng month: '07' oa: 1 oa_version: Published Version page: 178-197 project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2564DBCA-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '665385' name: International IST Doctoral Program publication_status: published publisher: Springer publist_id: '7782' quality_controlled: '1' related_material: record: - id: '10199' relation: dissertation_contains status: public scopus_import: '1' status: public title: Symbolic algorithms for graphs and Markov decision processes with fairness objectives tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 10982 year: '2018' ... --- _id: '293' abstract: - lang: eng text: People sometimes make their admirable deeds and accomplishments hard to spot, such as by giving anonymously or avoiding bragging. Such ‘buried’ signals are hard to reconcile with standard models of signalling or indirect reciprocity, which motivate costly pro-social behaviour by reputational gains. To explain these phenomena, we design a simple game theory model, which we call the signal-burying game. This game has the feature that senders can bury their signal by deliberately reducing the probability of the signal being observed. If the signal is observed, however, it is identified as having been buried. We show under which conditions buried signals can be maintained, using static equilibrium concepts and calculations of the evolutionary dynamics. We apply our analysis to shed light on a number of otherwise puzzling social phenomena, including modesty, anonymous donations, subtlety in art and fashion, and overeagerness. acknowledgement: This work was supported by a grant from the John Templeton Foundation and by the Office of Naval Research Grant N00014-16-1-2914 (M.A.N.). C.H. acknowledges generous support from the ISTFELLOW programme and by the Schrödinger scholarship of the Austrian Science Fund (FWF) J3475. article_processing_charge: No article_type: original author: - first_name: Moshe full_name: Hoffman, Moshe last_name: Hoffman - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: Hoffman M, Hilbe C, Nowak M. The signal-burying game can explain why we obscure positive traits and good deeds. Nature Human Behaviour. 2018;2:397-404. doi:10.1038/s41562-018-0354-z apa: Hoffman, M., Hilbe, C., & Nowak, M. (2018). The signal-burying game can explain why we obscure positive traits and good deeds. Nature Human Behaviour. Nature Publishing Group. https://doi.org/10.1038/s41562-018-0354-z chicago: Hoffman, Moshe, Christian Hilbe, and Martin Nowak. “The Signal-Burying Game Can Explain Why We Obscure Positive Traits and Good Deeds.” Nature Human Behaviour. Nature Publishing Group, 2018. https://doi.org/10.1038/s41562-018-0354-z. ieee: M. Hoffman, C. Hilbe, and M. Nowak, “The signal-burying game can explain why we obscure positive traits and good deeds,” Nature Human Behaviour, vol. 2. Nature Publishing Group, pp. 397–404, 2018. ista: Hoffman M, Hilbe C, Nowak M. 2018. The signal-burying game can explain why we obscure positive traits and good deeds. Nature Human Behaviour. 2, 397–404. mla: Hoffman, Moshe, et al. “The Signal-Burying Game Can Explain Why We Obscure Positive Traits and Good Deeds.” Nature Human Behaviour, vol. 2, Nature Publishing Group, 2018, pp. 397–404, doi:10.1038/s41562-018-0354-z. short: M. Hoffman, C. Hilbe, M. Nowak, Nature Human Behaviour 2 (2018) 397–404. date_created: 2018-12-11T11:45:39Z date_published: 2018-05-28T00:00:00Z date_updated: 2023-09-19T10:12:03Z day: '28' ddc: - '000' department: - _id: KrCh doi: 10.1038/s41562-018-0354-z ec_funded: 1 external_id: isi: - '000435551300009' file: - access_level: open_access checksum: 32efaf06a597495c184df91b3fbb19c0 content_type: application/pdf creator: dernst date_created: 2019-11-19T08:17:23Z date_updated: 2020-07-14T12:45:54Z file_id: '7051' file_name: 2018_NatureHumanBeh_Hoffman.pdf file_size: 194734 relation: main_file file_date_updated: 2020-07-14T12:45:54Z has_accepted_license: '1' intvolume: ' 2' isi: 1 language: - iso: eng month: '05' oa: 1 oa_version: Submitted Version page: 397 - 404 project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Nature Human Behaviour publication_status: published publisher: Nature Publishing Group publist_id: '7588' quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/the-logic-of-modesty-why-it-pays-to-be-humble/ scopus_import: '1' status: public title: The signal-burying game can explain why we obscure positive traits and good deeds type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 2 year: '2018' ... --- _id: '5967' abstract: - lang: eng text: "The Big Match is a multi-stage two-player game. In each stage Player 1 hides one or two pebbles in his hand, and his opponent has to guess that number; Player 1 loses a point if Player 2 is correct, and otherwise he wins a point. As soon as Player 1 hides one pebble, the players cannot change their choices in any future stage.\r\nBlackwell and Ferguson (1968) give an ε-optimal strategy for Player 1 that hides, in each stage, one pebble with a probability that depends on the entire past history. Any strategy that depends just on the clock or on a finite memory is worthless. The long-standing natural open problem has been whether every strategy that depends just on the clock and a finite memory is worthless. We prove that there is such a strategy that is ε-optimal. In fact, we show that just two states of memory are sufficient.\r\n" article_processing_charge: No author: - first_name: Kristoffer Arnsfelt full_name: Hansen, Kristoffer Arnsfelt last_name: Hansen - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 - first_name: Abraham full_name: Neyman, Abraham last_name: Neyman citation: ama: 'Hansen KA, Ibsen-Jensen R, Neyman A. The Big Match with a clock and a bit of memory. In: Proceedings of the 2018 ACM Conference on Economics and Computation  - EC ’18. ACM Press; 2018:149-150. doi:10.1145/3219166.3219198' apa: 'Hansen, K. A., Ibsen-Jensen, R., & Neyman, A. (2018). The Big Match with a clock and a bit of memory. In Proceedings of the 2018 ACM Conference on Economics and Computation  - EC ’18 (pp. 149–150). Ithaca, NY, United States: ACM Press. https://doi.org/10.1145/3219166.3219198' chicago: Hansen, Kristoffer Arnsfelt, Rasmus Ibsen-Jensen, and Abraham Neyman. “The Big Match with a Clock and a Bit of Memory.” In Proceedings of the 2018 ACM Conference on Economics and Computation  - EC ’18, 149–50. ACM Press, 2018. https://doi.org/10.1145/3219166.3219198. ieee: K. A. Hansen, R. Ibsen-Jensen, and A. Neyman, “The Big Match with a clock and a bit of memory,” in Proceedings of the 2018 ACM Conference on Economics and Computation  - EC ’18, Ithaca, NY, United States, 2018, pp. 149–150. ista: 'Hansen KA, Ibsen-Jensen R, Neyman A. 2018. The Big Match with a clock and a bit of memory. Proceedings of the 2018 ACM Conference on Economics and Computation  - EC ’18. EC: Conference on Economics and Computation, 149–150.' mla: Hansen, Kristoffer Arnsfelt, et al. “The Big Match with a Clock and a Bit of Memory.” Proceedings of the 2018 ACM Conference on Economics and Computation  - EC ’18, ACM Press, 2018, pp. 149–50, doi:10.1145/3219166.3219198. short: K.A. Hansen, R. Ibsen-Jensen, A. Neyman, in:, Proceedings of the 2018 ACM Conference on Economics and Computation  - EC ’18, ACM Press, 2018, pp. 149–150. conference: end_date: 2018-06-22 location: Ithaca, NY, United States name: 'EC: Conference on Economics and Computation' start_date: 2018-06-18 date_created: 2019-02-13T10:31:41Z date_published: 2018-06-18T00:00:00Z date_updated: 2023-09-19T10:45:15Z day: '18' ddc: - '000' department: - _id: KrCh doi: 10.1145/3219166.3219198 external_id: isi: - '000492755100020' file: - access_level: open_access checksum: bb52683e349cfd864f4769a8f38f2798 content_type: application/pdf creator: dernst date_created: 2019-11-19T08:24:24Z date_updated: 2020-07-14T12:47:14Z file_id: '7054' file_name: 2018_EC18_Hansen.pdf file_size: 302539 relation: main_file file_date_updated: 2020-07-14T12:47:14Z has_accepted_license: '1' isi: 1 language: - iso: eng month: '06' oa: 1 oa_version: Submitted Version page: 149-150 publication: Proceedings of the 2018 ACM Conference on Economics and Computation - EC '18 publication_identifier: isbn: - '9781450358293' publication_status: published publisher: ACM Press quality_controlled: '1' scopus_import: '1' status: public title: The Big Match with a clock and a bit of memory type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2018' ... --- _id: '5993' abstract: - lang: eng text: 'In this article, we consider the termination problem of probabilistic programs with real-valued variables. Thequestions concerned are: qualitative ones that ask (i) whether the program terminates with probability 1(almost-sure termination) and (ii) whether the expected termination time is finite (finite termination); andquantitative ones that ask (i) to approximate the expected termination time (expectation problem) and (ii) tocompute a boundBsuch that the probability not to terminate afterBsteps decreases exponentially (con-centration problem). To solve these questions, we utilize the notion of ranking supermartingales, which isa powerful approach for proving termination of probabilistic programs. In detail, we focus on algorithmicsynthesis of linear ranking-supermartingales over affine probabilistic programs (Apps) with both angelic anddemonic non-determinism. An important subclass of Apps is LRApp which is defined as the class of all Appsover which a linear ranking-supermartingale exists.Our main contributions are as follows. Firstly, we show that the membership problem of LRApp (i) canbe decided in polynomial time for Apps with at most demonic non-determinism, and (ii) isNP-hard and inPSPACEfor Apps with angelic non-determinism. Moreover, theNP-hardness result holds already for Appswithout probability and demonic non-determinism. Secondly, we show that the concentration problem overLRApp can be solved in the same complexity as for the membership problem of LRApp. Finally, we show thatthe expectation problem over LRApp can be solved in2EXPTIMEand isPSPACE-hard even for Apps withoutprobability and non-determinism (i.e., deterministic programs). Our experimental results demonstrate theeffectiveness of our approach to answer the qualitative and quantitative questions over Apps with at mostdemonic non-determinism.' article_number: '7' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Hongfei full_name: Fu, Hongfei id: 3AAD03D6-F248-11E8-B48F-1D18A9856A87 last_name: Fu - first_name: Petr full_name: Novotný, Petr id: 3CC3B868-F248-11E8-B48F-1D18A9856A87 last_name: Novotný - first_name: Rouzbeh full_name: Hasheminezhad, Rouzbeh last_name: Hasheminezhad citation: ama: Chatterjee K, Fu H, Novotný P, Hasheminezhad R. Algorithmic analysis of qualitative and quantitative termination problems for affine probabilistic programs. ACM Transactions on Programming Languages and Systems. 2018;40(2). doi:10.1145/3174800 apa: Chatterjee, K., Fu, H., Novotný, P., & Hasheminezhad, R. (2018). Algorithmic analysis of qualitative and quantitative termination problems for affine probabilistic programs. ACM Transactions on Programming Languages and Systems. Association for Computing Machinery (ACM). https://doi.org/10.1145/3174800 chicago: Chatterjee, Krishnendu, Hongfei Fu, Petr Novotný, and Rouzbeh Hasheminezhad. “Algorithmic Analysis of Qualitative and Quantitative Termination Problems for Affine Probabilistic Programs.” ACM Transactions on Programming Languages and Systems. Association for Computing Machinery (ACM), 2018. https://doi.org/10.1145/3174800. ieee: K. Chatterjee, H. Fu, P. Novotný, and R. Hasheminezhad, “Algorithmic analysis of qualitative and quantitative termination problems for affine probabilistic programs,” ACM Transactions on Programming Languages and Systems, vol. 40, no. 2. Association for Computing Machinery (ACM), 2018. ista: Chatterjee K, Fu H, Novotný P, Hasheminezhad R. 2018. Algorithmic analysis of qualitative and quantitative termination problems for affine probabilistic programs. ACM Transactions on Programming Languages and Systems. 40(2), 7. mla: Chatterjee, Krishnendu, et al. “Algorithmic Analysis of Qualitative and Quantitative Termination Problems for Affine Probabilistic Programs.” ACM Transactions on Programming Languages and Systems, vol. 40, no. 2, 7, Association for Computing Machinery (ACM), 2018, doi:10.1145/3174800. short: K. Chatterjee, H. Fu, P. Novotný, R. Hasheminezhad, ACM Transactions on Programming Languages and Systems 40 (2018). date_created: 2019-02-14T12:29:10Z date_published: 2018-06-01T00:00:00Z date_updated: 2023-09-19T14:38:42Z day: '01' department: - _id: KrCh doi: 10.1145/3174800 ec_funded: 1 external_id: arxiv: - '1510.08517' isi: - '000434634500003' intvolume: ' 40' isi: 1 issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1510.08517 month: '06' oa: 1 oa_version: Submitted Version project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: ACM Transactions on Programming Languages and Systems publication_identifier: issn: - 0164-0925 publication_status: published publisher: Association for Computing Machinery (ACM) quality_controlled: '1' related_material: record: - id: '1438' relation: earlier_version status: public scopus_import: '1' status: public title: Algorithmic analysis of qualitative and quantitative termination problems for affine probabilistic programs type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 40 year: '2018' ... --- _id: '25' abstract: - lang: eng text: 'Partially observable Markov decision processes (POMDPs) are the standard models for planning under uncertainty with both finite and infinite horizon. Besides the well-known discounted-sum objective, indefinite-horizon objective (aka Goal-POMDPs) is another classical objective for POMDPs. In this case, given a set of target states and a positive cost for each transition, the optimization objective is to minimize the expected total cost until a target state is reached. In the literature, RTDP-Bel or heuristic search value iteration (HSVI) have been used for solving Goal-POMDPs. Neither of these algorithms has theoretical convergence guarantees, and HSVI may even fail to terminate its trials. We give the following contributions: (1) We discuss the challenges introduced in Goal-POMDPs and illustrate how they prevent the original HSVI from converging. (2) We present a novel algorithm inspired by HSVI, termed Goal-HSVI, and show that our algorithm has convergence guarantees. (3) We show that Goal-HSVI outperforms RTDP-Bel on a set of well-known examples.' acknowledgement: '∗This work has been supported by Vienna Science and Technology Fund (WWTF) Project ICT15-003, Austrian Science Fund (FWF) NFN Grant No S11407-N23 (RiSE/SHiNE), and ERC Starting grant (279307: Graph Games). This research was sponsored by the Army Research Laboratory and was accomplished under Cooperative Agreement Number W911NF-13-2-0045 (ARL Cyber Security CRA). ' article_processing_charge: No author: - first_name: Karel full_name: Horák, Karel last_name: Horák - first_name: Branislav full_name: Bošanský, Branislav last_name: Bošanský - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X citation: ama: 'Horák K, Bošanský B, Chatterjee K. Goal-HSVI: Heuristic search value iteration for goal-POMDPs. In: Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence. Vol 2018-July. IJCAI; 2018:4764-4770. doi:10.24963/ijcai.2018/662' apa: 'Horák, K., Bošanský, B., & Chatterjee, K. (2018). Goal-HSVI: Heuristic search value iteration for goal-POMDPs. In Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence (Vol. 2018–July, pp. 4764–4770). Stockholm, Sweden: IJCAI. https://doi.org/10.24963/ijcai.2018/662' chicago: 'Horák, Karel, Branislav Bošanský, and Krishnendu Chatterjee. “Goal-HSVI: Heuristic Search Value Iteration for Goal-POMDPs.” In Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, 2018–July:4764–70. IJCAI, 2018. https://doi.org/10.24963/ijcai.2018/662.' ieee: 'K. Horák, B. Bošanský, and K. Chatterjee, “Goal-HSVI: Heuristic search value iteration for goal-POMDPs,” in Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, Stockholm, Sweden, 2018, vol. 2018–July, pp. 4764–4770.' ista: 'Horák K, Bošanský B, Chatterjee K. 2018. Goal-HSVI: Heuristic search value iteration for goal-POMDPs. Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence. IJCAI: International Joint Conference on Artificial Intelligence vol. 2018–July, 4764–4770.' mla: 'Horák, Karel, et al. “Goal-HSVI: Heuristic Search Value Iteration for Goal-POMDPs.” Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, vol. 2018–July, IJCAI, 2018, pp. 4764–70, doi:10.24963/ijcai.2018/662.' short: K. Horák, B. Bošanský, K. Chatterjee, in:, Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, IJCAI, 2018, pp. 4764–4770. conference: end_date: 2018-07-19 location: Stockholm, Sweden name: 'IJCAI: International Joint Conference on Artificial Intelligence' start_date: 2018-07-13 date_created: 2018-12-11T11:44:13Z date_published: 2018-07-01T00:00:00Z date_updated: 2023-09-19T14:44:59Z day: '01' department: - _id: KrCh doi: 10.24963/ijcai.2018/662 ec_funded: 1 external_id: isi: - '000764175404127' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.24963/ijcai.2018/662 month: '07' oa: 1 oa_version: Published Version page: 4764 - 4770 project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence publication_status: published publisher: IJCAI publist_id: '8030' quality_controlled: '1' scopus_import: '1' status: public title: 'Goal-HSVI: Heuristic search value iteration for goal-POMDPs' type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 2018-July year: '2018' ... --- _id: '24' abstract: - lang: eng text: Partially-observable Markov decision processes (POMDPs) with discounted-sum payoff are a standard framework to model a wide range of problems related to decision making under uncertainty. Traditionally, the goal has been to obtain policies that optimize the expectation of the discounted-sum payoff. A key drawback of the expectation measure is that even low probability events with extreme payoff can significantly affect the expectation, and thus the obtained policies are not necessarily risk-averse. An alternate approach is to optimize the probability that the payoff is above a certain threshold, which allows obtaining risk-averse policies, but ignores optimization of the expectation. We consider the expectation optimization with probabilistic guarantee (EOPG) problem, where the goal is to optimize the expectation ensuring that the payoff is above a given threshold with at least a specified probability. We present several results on the EOPG problem, including the first algorithm to solve it. acknowledgement: "This research was supported by the Vienna Science and Technology Fund (WWTF) grant ICT15-003; Austrian Science Fund (FWF): S11407-N23(RiSE/SHiNE);and an ERC Start Grant (279307:Graph Games).\r\n" article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Adrian full_name: Elgyütt, Adrian id: 4A2E9DBA-F248-11E8-B48F-1D18A9856A87 last_name: Elgyütt - first_name: Petr full_name: Novotny, Petr id: 3CC3B868-F248-11E8-B48F-1D18A9856A87 last_name: Novotny - first_name: Owen full_name: Rouillé, Owen last_name: Rouillé citation: ama: 'Chatterjee K, Elgyütt A, Novotný P, Rouillé O. Expectation optimization with probabilistic guarantees in POMDPs with discounted-sum objectives. In: Vol 2018. IJCAI; 2018:4692-4699. doi:10.24963/ijcai.2018/652' apa: 'Chatterjee, K., Elgyütt, A., Novotný, P., & Rouillé, O. (2018). Expectation optimization with probabilistic guarantees in POMDPs with discounted-sum objectives (Vol. 2018, pp. 4692–4699). Presented at the IJCAI: International Joint Conference on Artificial Intelligence, Stockholm, Sweden: IJCAI. https://doi.org/10.24963/ijcai.2018/652' chicago: Chatterjee, Krishnendu, Adrian Elgyütt, Petr Novotný, and Owen Rouillé. “Expectation Optimization with Probabilistic Guarantees in POMDPs with Discounted-Sum Objectives,” 2018:4692–99. IJCAI, 2018. https://doi.org/10.24963/ijcai.2018/652. ieee: 'K. Chatterjee, A. Elgyütt, P. Novotný, and O. Rouillé, “Expectation optimization with probabilistic guarantees in POMDPs with discounted-sum objectives,” presented at the IJCAI: International Joint Conference on Artificial Intelligence, Stockholm, Sweden, 2018, vol. 2018, pp. 4692–4699.' ista: 'Chatterjee K, Elgyütt A, Novotný P, Rouillé O. 2018. Expectation optimization with probabilistic guarantees in POMDPs with discounted-sum objectives. IJCAI: International Joint Conference on Artificial Intelligence vol. 2018, 4692–4699.' mla: Chatterjee, Krishnendu, et al. Expectation Optimization with Probabilistic Guarantees in POMDPs with Discounted-Sum Objectives. Vol. 2018, IJCAI, 2018, pp. 4692–99, doi:10.24963/ijcai.2018/652. short: K. Chatterjee, A. Elgyütt, P. Novotný, O. Rouillé, in:, IJCAI, 2018, pp. 4692–4699. conference: end_date: 2018-07-19 location: Stockholm, Sweden name: 'IJCAI: International Joint Conference on Artificial Intelligence' start_date: 2018-07-13 date_created: 2018-12-11T11:44:13Z date_published: 2018-07-01T00:00:00Z date_updated: 2023-09-19T14:45:48Z day: '01' department: - _id: KrCh - _id: ToHe doi: 10.24963/ijcai.2018/652 ec_funded: 1 external_id: arxiv: - '1804.10601' isi: - '000764175404117' intvolume: ' 2018' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1804.10601 month: '07' oa: 1 oa_version: Preprint page: 4692 - 4699 project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication_status: published publisher: IJCAI publist_id: '8031' quality_controlled: '1' scopus_import: '1' status: public title: Expectation optimization with probabilistic guarantees in POMDPs with discounted-sum objectives type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 2018 year: '2018' ... --- _id: '34' abstract: - lang: eng text: Partially observable Markov decision processes (POMDPs) are widely used in probabilistic planning problems in which an agent interacts with an environment using noisy and imprecise sensors. We study a setting in which the sensors are only partially defined and the goal is to synthesize “weakest” additional sensors, such that in the resulting POMDP, there is a small-memory policy for the agent that almost-surely (with probability 1) satisfies a reachability objective. We show that the problem is NP-complete, and present a symbolic algorithm by encoding the problem into SAT instances. We illustrate trade-offs between the amount of memory of the policy and the number of additional sensors on a simple example. We have implemented our approach and consider three classical POMDP examples from the literature, and show that in all the examples the number of sensors can be significantly decreased (as compared to the existing solutions in the literature) without increasing the complexity of the policies. alternative_title: - ICAPS article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Chemlík, Martin last_name: Chemlík - first_name: Ufuk full_name: Topcu, Ufuk last_name: Topcu citation: ama: 'Chatterjee K, Chemlík M, Topcu U. Sensor synthesis for POMDPs with reachability objectives. In: Vol 2018. AAAI Press; 2018:47-55.' apa: 'Chatterjee, K., Chemlík, M., & Topcu, U. (2018). Sensor synthesis for POMDPs with reachability objectives (Vol. 2018, pp. 47–55). Presented at the ICAPS: International Conference on Automated Planning and Scheduling, Delft, Netherlands: AAAI Press.' chicago: Chatterjee, Krishnendu, Martin Chemlík, and Ufuk Topcu. “Sensor Synthesis for POMDPs with Reachability Objectives,” 2018:47–55. AAAI Press, 2018. ieee: 'K. Chatterjee, M. Chemlík, and U. Topcu, “Sensor synthesis for POMDPs with reachability objectives,” presented at the ICAPS: International Conference on Automated Planning and Scheduling, Delft, Netherlands, 2018, vol. 2018, pp. 47–55.' ista: 'Chatterjee K, Chemlík M, Topcu U. 2018. Sensor synthesis for POMDPs with reachability objectives. ICAPS: International Conference on Automated Planning and Scheduling, ICAPS, vol. 2018, 47–55.' mla: Chatterjee, Krishnendu, et al. Sensor Synthesis for POMDPs with Reachability Objectives. Vol. 2018, AAAI Press, 2018, pp. 47–55. short: K. Chatterjee, M. Chemlík, U. Topcu, in:, AAAI Press, 2018, pp. 47–55. conference: end_date: 2018-06-29 location: Delft, Netherlands name: 'ICAPS: International Conference on Automated Planning and Scheduling' start_date: 2018-06-24 date_created: 2018-12-11T11:44:16Z date_published: 2018-06-01T00:00:00Z date_updated: 2023-09-19T14:44:14Z day: '01' department: - _id: KrCh ec_funded: 1 external_id: arxiv: - '1710.00675' isi: - '000492986200006' intvolume: ' 2018' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1710.00675 month: '06' oa: 1 oa_version: Preprint page: 47 - 55 project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2587B514-B435-11E9-9278-68D0E5697425 name: Microsoft Research Faculty Fellowship publication_status: published publisher: AAAI Press publist_id: '8021' quality_controlled: '1' scopus_import: '1' status: public title: Sensor synthesis for POMDPs with reachability objectives type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 2018 year: '2018' ... --- _id: '35' abstract: - lang: eng text: 'We consider planning problems for graphs, Markov decision processes (MDPs), and games on graphs. While graphs represent the most basic planning model, MDPs represent interaction with nature and games on graphs represent interaction with an adversarial environment. We consider two planning problems where there are k different target sets, and the problems are as follows: (a) the coverage problem asks whether there is a plan for each individual target set; and (b) the sequential target reachability problem asks whether the targets can be reached in sequence. For the coverage problem, we present a linear-time algorithm for graphs, and quadratic conditional lower bound for MDPs and games on graphs. For the sequential target problem, we present a linear-time algorithm for graphs, a sub-quadratic algorithm for MDPs, and a quadratic conditional lower bound for games on graphs. Our results with conditional lower bounds establish (i) model-separation results showing that for the coverage problem MDPs and games on graphs are harder than graphs and for the sequential reachability problem games on graphs are harder than MDPs and graphs; and (ii) objective-separation results showing that for MDPs the coverage problem is harder than the sequential target problem.' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Wolfgang full_name: Dvorák, Wolfgang last_name: Dvorák - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Alexander full_name: Svozil, Alexander last_name: Svozil citation: ama: 'Chatterjee K, Dvorák W, Henzinger MH, Svozil A. Algorithms and conditional lower bounds for planning problems. In: 28th International Conference on Automated Planning and Scheduling . AAAI Press; 2018.' apa: 'Chatterjee, K., Dvorák, W., Henzinger, M. H., & Svozil, A. (2018). Algorithms and conditional lower bounds for planning problems. In 28th International Conference on Automated Planning and Scheduling . Delft, Netherlands: AAAI Press.' chicago: Chatterjee, Krishnendu, Wolfgang Dvorák, Monika H Henzinger, and Alexander Svozil. “Algorithms and Conditional Lower Bounds for Planning Problems.” In 28th International Conference on Automated Planning and Scheduling . AAAI Press, 2018. ieee: K. Chatterjee, W. Dvorák, M. H. Henzinger, and A. Svozil, “Algorithms and conditional lower bounds for planning problems,” in 28th International Conference on Automated Planning and Scheduling , Delft, Netherlands, 2018. ista: 'Chatterjee K, Dvorák W, Henzinger MH, Svozil A. 2018. Algorithms and conditional lower bounds for planning problems. 28th International Conference on Automated Planning and Scheduling . ICAPS: International Conference on Automated Planning and Scheduling.' mla: Chatterjee, Krishnendu, et al. “Algorithms and Conditional Lower Bounds for Planning Problems.” 28th International Conference on Automated Planning and Scheduling , AAAI Press, 2018. short: K. Chatterjee, W. Dvorák, M.H. Henzinger, A. Svozil, in:, 28th International Conference on Automated Planning and Scheduling , AAAI Press, 2018. conference: end_date: 2018-06-29 location: Delft, Netherlands name: 'ICAPS: International Conference on Automated Planning and Scheduling' start_date: 2018-06-24 date_created: 2018-12-11T11:44:17Z date_published: 2018-06-01T00:00:00Z date_updated: 2023-09-26T10:41:41Z day: '01' department: - _id: KrCh ec_funded: 1 external_id: arxiv: - '1804.07031' isi: - '000492986200007' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1804.07031 month: '06' oa: 1 oa_version: None project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: '28th International Conference on Automated Planning and Scheduling ' publication_status: published publisher: AAAI Press publist_id: '8020' quality_controlled: '1' related_material: record: - id: '9293' relation: later_version status: public scopus_import: '1' status: public title: Algorithms and conditional lower bounds for planning problems type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2018' ... --- _id: '738' abstract: - lang: eng text: 'This paper is devoted to automatic competitive analysis of real-time scheduling algorithms for firm-deadline tasksets, where only completed tasks con- tribute some utility to the system. Given such a taskset T , the competitive ratio of an on-line scheduling algorithm A for T is the worst-case utility ratio of A over the utility achieved by a clairvoyant algorithm. We leverage the theory of quantitative graph games to address the competitive analysis and competitive synthesis problems. For the competitive analysis case, given any taskset T and any finite-memory on- line scheduling algorithm A , we show that the competitive ratio of A in T can be computed in polynomial time in the size of the state space of A . Our approach is flexible as it also provides ways to model meaningful constraints on the released task sequences that determine the competitive ratio. We provide an experimental study of many well-known on-line scheduling algorithms, which demonstrates the feasibility of our competitive analysis approach that effectively replaces human ingenuity (required Preliminary versions of this paper have appeared in Chatterjee et al. ( 2013 , 2014 ). B Andreas Pavlogiannis pavlogiannis@ist.ac.at Krishnendu Chatterjee krish.chat@ist.ac.at Alexander Kößler koe@ecs.tuwien.ac.at Ulrich Schmid s@ecs.tuwien.ac.at 1 IST Austria (Institute of Science and Technology Austria), Am Campus 1, 3400 Klosterneuburg, Austria 2 Embedded Computing Systems Group, Vienna University of Technology, Treitlstrasse 3, 1040 Vienna, Austria 123 Real-Time Syst for finding worst-case scenarios) by computing power. For the competitive synthesis case, we are just given a taskset T , and the goal is to automatically synthesize an opti- mal on-line scheduling algorithm A , i.e., one that guarantees the largest competitive ratio possible for T . We show how the competitive synthesis problem can be reduced to a two-player graph game with partial information, and establish that the compu- tational complexity of solving this game is Np -complete. The competitive synthesis problem is hence in Np in the size of the state space of the non-deterministic labeled transition system encoding the taskset. Overall, the proposed framework assists in the selection of suitable scheduling algorithms for a given taskset, which is in fact the most common situation in real-time systems design. ' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 - first_name: Alexander full_name: Kößler, Alexander last_name: Kößler - first_name: Ulrich full_name: Schmid, Ulrich last_name: Schmid citation: ama: Chatterjee K, Pavlogiannis A, Kößler A, Schmid U. Automated competitive analysis of real time scheduling with graph games. Real-Time Systems. 2018;54(1):166-207. doi:10.1007/s11241-017-9293-4 apa: Chatterjee, K., Pavlogiannis, A., Kößler, A., & Schmid, U. (2018). Automated competitive analysis of real time scheduling with graph games. Real-Time Systems. Springer. https://doi.org/10.1007/s11241-017-9293-4 chicago: Chatterjee, Krishnendu, Andreas Pavlogiannis, Alexander Kößler, and Ulrich Schmid. “Automated Competitive Analysis of Real Time Scheduling with Graph Games.” Real-Time Systems. Springer, 2018. https://doi.org/10.1007/s11241-017-9293-4. ieee: K. Chatterjee, A. Pavlogiannis, A. Kößler, and U. Schmid, “Automated competitive analysis of real time scheduling with graph games,” Real-Time Systems, vol. 54, no. 1. Springer, pp. 166–207, 2018. ista: Chatterjee K, Pavlogiannis A, Kößler A, Schmid U. 2018. Automated competitive analysis of real time scheduling with graph games. Real-Time Systems. 54(1), 166–207. mla: Chatterjee, Krishnendu, et al. “Automated Competitive Analysis of Real Time Scheduling with Graph Games.” Real-Time Systems, vol. 54, no. 1, Springer, 2018, pp. 166–207, doi:10.1007/s11241-017-9293-4. short: K. Chatterjee, A. Pavlogiannis, A. Kößler, U. Schmid, Real-Time Systems 54 (2018) 166–207. date_created: 2018-12-11T11:48:14Z date_published: 2018-01-01T00:00:00Z date_updated: 2023-09-27T12:52:38Z day: '01' ddc: - '000' department: - _id: KrCh doi: 10.1007/s11241-017-9293-4 ec_funded: 1 external_id: isi: - '000419955500006' file: - access_level: open_access checksum: c2590ef160709d8054cf29ee173f1454 content_type: application/pdf creator: system date_created: 2018-12-12T10:17:14Z date_updated: 2020-07-14T12:47:56Z file_id: '5267' file_name: IST-2018-960-v1+1_2017_Chatterjee_Automated_competetive.pdf file_size: 1163507 relation: main_file file_date_updated: 2020-07-14T12:47:56Z has_accepted_license: '1' intvolume: ' 54' isi: 1 issue: '1' language: - iso: eng month: '01' oa: 1 oa_version: Published Version page: 166 - 207 project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2587B514-B435-11E9-9278-68D0E5697425 name: Microsoft Research Faculty Fellowship publication: Real-Time Systems publication_status: published publisher: Springer publist_id: '6929' pubrep_id: '960' quality_controlled: '1' related_material: record: - id: '2820' relation: earlier_version status: public scopus_import: '1' status: public title: Automated competitive analysis of real time scheduling with graph games tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 54 year: '2018' ... --- _id: '198' abstract: - lang: eng text: We consider a class of students learning a language from a teacher. The situation can be interpreted as a group of child learners receiving input from the linguistic environment. The teacher provides sample sentences. The students try to learn the grammar from the teacher. In addition to just listening to the teacher, the students can also communicate with each other. The students hold hypotheses about the grammar and change them if they receive counter evidence. The process stops when all students have converged to the correct grammar. We study how the time to convergence depends on the structure of the classroom by introducing and evaluating various complexity measures. We find that structured communication between students, although potentially introducing confusion, can greatly reduce some of the complexity measures. Our theory can also be interpreted as applying to the scientific process, where nature is the teacher and the scientists are the students. article_number: '20180073' article_processing_charge: No article_type: original author: - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 - first_name: Josef full_name: Tkadlec, Josef id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87 last_name: Tkadlec orcid: 0000-0002-1097-9684 - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: Ibsen-Jensen R, Tkadlec J, Chatterjee K, Nowak M. Language acquisition with communication between learners. Journal of the Royal Society Interface. 2018;15(140). doi:10.1098/rsif.2018.0073 apa: Ibsen-Jensen, R., Tkadlec, J., Chatterjee, K., & Nowak, M. (2018). Language acquisition with communication between learners. Journal of the Royal Society Interface. The Royal Society. https://doi.org/10.1098/rsif.2018.0073 chicago: Ibsen-Jensen, Rasmus, Josef Tkadlec, Krishnendu Chatterjee, and Martin Nowak. “Language Acquisition with Communication between Learners.” Journal of the Royal Society Interface. The Royal Society, 2018. https://doi.org/10.1098/rsif.2018.0073. ieee: R. Ibsen-Jensen, J. Tkadlec, K. Chatterjee, and M. Nowak, “Language acquisition with communication between learners,” Journal of the Royal Society Interface, vol. 15, no. 140. The Royal Society, 2018. ista: Ibsen-Jensen R, Tkadlec J, Chatterjee K, Nowak M. 2018. Language acquisition with communication between learners. Journal of the Royal Society Interface. 15(140), 20180073. mla: Ibsen-Jensen, Rasmus, et al. “Language Acquisition with Communication between Learners.” Journal of the Royal Society Interface, vol. 15, no. 140, 20180073, The Royal Society, 2018, doi:10.1098/rsif.2018.0073. short: R. Ibsen-Jensen, J. Tkadlec, K. Chatterjee, M. Nowak, Journal of the Royal Society Interface 15 (2018). date_created: 2018-12-11T11:45:09Z date_published: 2018-03-01T00:00:00Z date_updated: 2023-10-18T06:36:00Z day: '01' ddc: - '000' department: - _id: KrCh doi: 10.1098/rsif.2018.0073 ec_funded: 1 external_id: isi: - '000428576200023' pmid: - '29593089' file: - access_level: open_access checksum: 444e1a9d98eb0e780671be82b13025f3 content_type: application/pdf creator: dernst date_created: 2019-02-12T07:54:37Z date_updated: 2020-07-14T12:45:22Z file_id: '5955' file_name: 2018_RS_IbsenJensen.pdf file_size: 219837 relation: main_file file_date_updated: 2020-07-14T12:45:22Z has_accepted_license: '1' intvolume: ' 15' isi: 1 issue: '140' language: - iso: eng month: '03' oa: 1 oa_version: Submitted Version pmid: 1 project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering publication: Journal of the Royal Society Interface publication_identifier: eissn: - 1742-5662 publication_status: published publisher: The Royal Society publist_id: '7715' quality_controlled: '1' related_material: link: - relation: supplementary_material url: https://dx.doi.org/10.6084/m9.figshare.c.4028971 record: - id: '9814' relation: research_data status: public scopus_import: '1' status: public title: Language acquisition with communication between learners type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 15 year: '2018' ... --- _id: '5751' abstract: - lang: eng text: 'Because of the intrinsic randomness of the evolutionary process, a mutant with a fitness advantage has some chance to be selected but no certainty. Any experiment that searches for advantageous mutants will lose many of them due to random drift. It is therefore of great interest to find population structures that improve the odds of advantageous mutants. Such structures are called amplifiers of natural selection: they increase the probability that advantageous mutants are selected. Arbitrarily strong amplifiers guarantee the selection of advantageous mutants, even for very small fitness advantage. Despite intensive research over the past decade, arbitrarily strong amplifiers have remained rare. Here we show how to construct a large variety of them. Our amplifiers are so simple that they could be useful in biotechnology, when optimizing biological molecules, or as a diagnostic tool, when searching for faster dividing cells or viruses. They could also occur in natural population structures.' article_number: '71' article_processing_charge: No author: - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 - first_name: Josef full_name: Tkadlec, Josef id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87 last_name: Tkadlec orcid: 0000-0002-1097-9684 - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin A. full_name: Nowak, Martin A. last_name: Nowak citation: ama: Pavlogiannis A, Tkadlec J, Chatterjee K, Nowak MA. Construction of arbitrarily strong amplifiers of natural selection using evolutionary graph theory. Communications Biology. 2018;1(1). doi:10.1038/s42003-018-0078-7 apa: Pavlogiannis, A., Tkadlec, J., Chatterjee, K., & Nowak, M. A. (2018). Construction of arbitrarily strong amplifiers of natural selection using evolutionary graph theory. Communications Biology. Springer Nature. https://doi.org/10.1038/s42003-018-0078-7 chicago: Pavlogiannis, Andreas, Josef Tkadlec, Krishnendu Chatterjee, and Martin A. Nowak. “Construction of Arbitrarily Strong Amplifiers of Natural Selection Using Evolutionary Graph Theory.” Communications Biology. Springer Nature, 2018. https://doi.org/10.1038/s42003-018-0078-7. ieee: A. Pavlogiannis, J. Tkadlec, K. Chatterjee, and M. A. Nowak, “Construction of arbitrarily strong amplifiers of natural selection using evolutionary graph theory,” Communications Biology, vol. 1, no. 1. Springer Nature, 2018. ista: Pavlogiannis A, Tkadlec J, Chatterjee K, Nowak MA. 2018. Construction of arbitrarily strong amplifiers of natural selection using evolutionary graph theory. Communications Biology. 1(1), 71. mla: Pavlogiannis, Andreas, et al. “Construction of Arbitrarily Strong Amplifiers of Natural Selection Using Evolutionary Graph Theory.” Communications Biology, vol. 1, no. 1, 71, Springer Nature, 2018, doi:10.1038/s42003-018-0078-7. short: A. Pavlogiannis, J. Tkadlec, K. Chatterjee, M.A. Nowak, Communications Biology 1 (2018). date_created: 2018-12-18T13:22:58Z date_published: 2018-06-14T00:00:00Z date_updated: 2024-02-21T13:48:42Z day: '14' ddc: - '004' - '519' - '576' department: - _id: KrCh doi: 10.1038/s42003-018-0078-7 ec_funded: 1 external_id: isi: - '000461126500071' file: - access_level: open_access checksum: a9db825fa3b64a51ff3de035ec973b3e content_type: application/pdf creator: dernst date_created: 2018-12-18T13:37:04Z date_updated: 2020-07-14T12:47:10Z file_id: '5752' file_name: 2018_CommBiology_Pavlogiannis.pdf file_size: 1804194 relation: main_file file_date_updated: 2020-07-14T12:47:10Z has_accepted_license: '1' intvolume: ' 1' isi: 1 issue: '1' language: - iso: eng month: '06' oa: 1 oa_version: Published Version project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering publication: Communications Biology publication_identifier: issn: - 2399-3642 publication_status: published publisher: Springer Nature pubrep_id: '1045' quality_controlled: '1' related_material: record: - id: '7196' relation: part_of_dissertation status: public - id: '5559' relation: popular_science status: public scopus_import: '1' status: public title: Construction of arbitrarily strong amplifiers of natural selection using evolutionary graph theory tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 1 year: '2018' ... --- _id: '66' abstract: - lang: eng text: 'Crypto-currencies are digital assets designed to work as a medium of exchange, e.g., Bitcoin, but they are susceptible to attacks (dishonest behavior of participants). A framework for the analysis of attacks in crypto-currencies requires (a) modeling of game-theoretic aspects to analyze incentives for deviation from honest behavior; (b) concurrent interactions between participants; and (c) analysis of long-term monetary gains. Traditional game-theoretic approaches for the analysis of security protocols consider either qualitative temporal properties such as safety and termination, or the very special class of one-shot (stateless) games. However, to analyze general attacks on protocols for crypto-currencies, both stateful analysis and quantitative objectives are necessary. In this work our main contributions are as follows: (a) we show how a class of concurrent mean-payo games, namely ergodic games, can model various attacks that arise naturally in crypto-currencies; (b) we present the first practical implementation of algorithms for ergodic games that scales to model realistic problems for crypto-currencies; and (c) we present experimental results showing that our framework can handle games with thousands of states and millions of transitions.' alternative_title: - LIPIcs article_number: '11' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Amir full_name: Goharshady, Amir id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 - first_name: Yaron full_name: Velner, Yaron last_name: Velner citation: ama: 'Chatterjee K, Goharshady AK, Ibsen-Jensen R, Velner Y. Ergodic mean-payoff games for the analysis of attacks in crypto-currencies. In: Vol 118. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2018. doi:10.4230/LIPIcs.CONCUR.2018.11' apa: 'Chatterjee, K., Goharshady, A. K., Ibsen-Jensen, R., & Velner, Y. (2018). Ergodic mean-payoff games for the analysis of attacks in crypto-currencies (Vol. 118). Presented at the CONCUR: Conference on Concurrency Theory, Beijing, China: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.CONCUR.2018.11' chicago: Chatterjee, Krishnendu, Amir Kafshdar Goharshady, Rasmus Ibsen-Jensen, and Yaron Velner. “Ergodic Mean-Payoff Games for the Analysis of Attacks in Crypto-Currencies,” Vol. 118. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2018. https://doi.org/10.4230/LIPIcs.CONCUR.2018.11. ieee: 'K. Chatterjee, A. K. Goharshady, R. Ibsen-Jensen, and Y. Velner, “Ergodic mean-payoff games for the analysis of attacks in crypto-currencies,” presented at the CONCUR: Conference on Concurrency Theory, Beijing, China, 2018, vol. 118.' ista: 'Chatterjee K, Goharshady AK, Ibsen-Jensen R, Velner Y. 2018. Ergodic mean-payoff games for the analysis of attacks in crypto-currencies. CONCUR: Conference on Concurrency Theory, LIPIcs, vol. 118, 11.' mla: Chatterjee, Krishnendu, et al. Ergodic Mean-Payoff Games for the Analysis of Attacks in Crypto-Currencies. Vol. 118, 11, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2018, doi:10.4230/LIPIcs.CONCUR.2018.11. short: K. Chatterjee, A.K. Goharshady, R. Ibsen-Jensen, Y. Velner, in:, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2018. conference: end_date: 2018-09-07 location: Beijing, China name: 'CONCUR: Conference on Concurrency Theory' start_date: 2018-09-04 date_created: 2018-12-11T11:44:27Z date_published: 2018-09-01T00:00:00Z date_updated: 2024-03-28T23:30:34Z day: '01' ddc: - '000' department: - _id: KrCh doi: 10.4230/LIPIcs.CONCUR.2018.11 ec_funded: 1 external_id: arxiv: - '1806.03108' file: - access_level: open_access checksum: 68a055b1aaa241cc38375083cf832a7d content_type: application/pdf creator: dernst date_created: 2018-12-17T12:08:00Z date_updated: 2020-07-14T12:47:34Z file_id: '5696' file_name: 2018_CONCUR_Chatterjee.pdf file_size: 1078309 relation: main_file file_date_updated: 2020-07-14T12:47:34Z has_accepted_license: '1' intvolume: ' 118' language: - iso: eng month: '09' oa: 1 oa_version: Published Version project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 266EEEC0-B435-11E9-9278-68D0E5697425 name: Quantitative Game-theoretic Analysis of Blockchain Applications and Smart Contracts publication_identifier: isbn: - 978-3-95977-087-3 publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik publist_id: '7988' quality_controlled: '1' related_material: record: - id: '8934' relation: dissertation_contains status: public scopus_import: '1' status: public title: Ergodic mean-payoff games for the analysis of attacks in crypto-currencies tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 118 year: '2018' ... --- _id: '311' abstract: - lang: eng text: 'Smart contracts are computer programs that are executed by a network of mutually distrusting agents, without the need of an external trusted authority. Smart contracts handle and transfer assets of considerable value (in the form of crypto-currency like Bitcoin). Hence, it is crucial that their implementation is bug-free. We identify the utility (or expected payoff) of interacting with such smart contracts as the basic and canonical quantitative property for such contracts. We present a framework for such quantitative analysis of smart contracts. Such a formal framework poses new and novel research challenges in programming languages, as it requires modeling of game-theoretic aspects to analyze incentives for deviation from honest behavior and modeling utilities which are not specified as standard temporal properties such as safety and termination. While game-theoretic incentives have been analyzed in the security community, their analysis has been restricted to the very special case of stateless games. However, to analyze smart contracts, stateful analysis is required as it must account for the different program states of the protocol. Our main contributions are as follows: we present (i)~a simplified programming language for smart contracts; (ii)~an automatic translation of the programs to state-based games; (iii)~an abstraction-refinement approach to solve such games; and (iv)~experimental results on real-world-inspired smart contracts.' acknowledgement: 'The research was partially supported by Vienna Science and Technology Fund (WWTF) Project ICT15-003, Austrian Science Fund (FWF) NFN Grant No S11407-N23 (RiSE/SHiNE), and ERC Starting grant (279307: Graph Games).' alternative_title: - LNCS article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Amir full_name: Goharshady, Amir id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 - first_name: Yaron full_name: Velner, Yaron last_name: Velner citation: ama: 'Chatterjee K, Goharshady AK, Velner Y. Quantitative analysis of smart contracts. In: Vol 10801. Springer; 2018:739-767. doi:10.1007/978-3-319-89884-1_26' apa: 'Chatterjee, K., Goharshady, A. K., & Velner, Y. (2018). Quantitative analysis of smart contracts (Vol. 10801, pp. 739–767). Presented at the ESOP: European Symposium on Programming, Thessaloniki, Greece: Springer. https://doi.org/10.1007/978-3-319-89884-1_26' chicago: Chatterjee, Krishnendu, Amir Kafshdar Goharshady, and Yaron Velner. “Quantitative Analysis of Smart Contracts,” 10801:739–67. Springer, 2018. https://doi.org/10.1007/978-3-319-89884-1_26. ieee: 'K. Chatterjee, A. K. Goharshady, and Y. Velner, “Quantitative analysis of smart contracts,” presented at the ESOP: European Symposium on Programming, Thessaloniki, Greece, 2018, vol. 10801, pp. 739–767.' ista: 'Chatterjee K, Goharshady AK, Velner Y. 2018. Quantitative analysis of smart contracts. ESOP: European Symposium on Programming, LNCS, vol. 10801, 739–767.' mla: Chatterjee, Krishnendu, et al. Quantitative Analysis of Smart Contracts. Vol. 10801, Springer, 2018, pp. 739–67, doi:10.1007/978-3-319-89884-1_26. short: K. Chatterjee, A.K. Goharshady, Y. Velner, in:, Springer, 2018, pp. 739–767. conference: end_date: 2018-04-19 location: Thessaloniki, Greece name: 'ESOP: European Symposium on Programming' start_date: 2018-04-16 date_created: 2018-12-11T11:45:45Z date_published: 2018-04-01T00:00:00Z date_updated: 2024-03-28T23:30:33Z day: '01' ddc: - '000' department: - _id: KrCh doi: 10.1007/978-3-319-89884-1_26 ec_funded: 1 file: - access_level: open_access checksum: 9c8a8338c571903b599b6ca93abd2cce content_type: application/pdf creator: dernst date_created: 2018-12-17T15:45:49Z date_updated: 2020-07-14T12:46:00Z file_id: '5716' file_name: 2018_ESOP_Chatterjee.pdf file_size: 1394993 relation: main_file file_date_updated: 2020-07-14T12:46:00Z has_accepted_license: '1' intvolume: ' 10801' language: - iso: eng month: '04' oa: 1 oa_version: Published Version page: 739 - 767 project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication_status: published publisher: Springer publist_id: '7554' quality_controlled: '1' related_material: record: - id: '8934' relation: dissertation_contains status: public scopus_import: '1' status: public title: Quantitative analysis of smart contracts tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 10801 year: '2018' ... --- _id: '6340' abstract: - lang: eng text: We present a secure approach for maintaining andreporting credit history records on the Blockchain. Our ap-proach removes third-parties such as credit reporting agen-cies from the lending process and replaces them with smartcontracts. This allows customers to interact directly with thelenders or banks while ensuring the integrity, unmalleabilityand privacy of their credit data. Additionally, each customerhas full control over complete or selective disclosure of hercredit records, eliminating the risk of privacy violations or databreaches. Moreover, our approach provides strong guaranteesfor the lenders as well. A lender can check both correctness andcompleteness of the credit data disclosed to her. This is the firstapproach that can perform all credit reporting tasks withouta central authority or changing the financial mechanisms*. article_processing_charge: No author: - first_name: Amir Kafshdar full_name: Goharshady, Amir Kafshdar id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 - first_name: Ali full_name: Behrouz, Ali last_name: Behrouz - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X citation: ama: 'Goharshady AK, Behrouz A, Chatterjee K. Secure Credit Reporting on the Blockchain. In: Proceedings of the IEEE International Conference on Blockchain. IEEE; 2018:1343-1348. doi:10.1109/Cybermatics_2018.2018.00231' apa: 'Goharshady, A. K., Behrouz, A., & Chatterjee, K. (2018). Secure Credit Reporting on the Blockchain. In Proceedings of the IEEE International Conference on Blockchain (pp. 1343–1348). Halifax, Canada: IEEE. https://doi.org/10.1109/Cybermatics_2018.2018.00231' chicago: Goharshady, Amir Kafshdar, Ali Behrouz, and Krishnendu Chatterjee. “Secure Credit Reporting on the Blockchain.” In Proceedings of the IEEE International Conference on Blockchain, 1343–48. IEEE, 2018. https://doi.org/10.1109/Cybermatics_2018.2018.00231. ieee: A. K. Goharshady, A. Behrouz, and K. Chatterjee, “Secure Credit Reporting on the Blockchain,” in Proceedings of the IEEE International Conference on Blockchain, Halifax, Canada, 2018, pp. 1343–1348. ista: Goharshady AK, Behrouz A, Chatterjee K. 2018. Secure Credit Reporting on the Blockchain. Proceedings of the IEEE International Conference on Blockchain. IEEE International Conference on Blockchain, 1343–1348. mla: Goharshady, Amir Kafshdar, et al. “Secure Credit Reporting on the Blockchain.” Proceedings of the IEEE International Conference on Blockchain, IEEE, 2018, pp. 1343–48, doi:10.1109/Cybermatics_2018.2018.00231. short: A.K. Goharshady, A. Behrouz, K. Chatterjee, in:, Proceedings of the IEEE International Conference on Blockchain, IEEE, 2018, pp. 1343–1348. conference: end_date: 2018-08-03 location: Halifax, Canada name: IEEE International Conference on Blockchain start_date: 2018-07-30 date_created: 2019-04-18T10:37:35Z date_published: 2018-09-01T00:00:00Z date_updated: 2024-03-28T23:30:34Z day: '01' ddc: - '000' department: - _id: KrCh doi: 10.1109/Cybermatics_2018.2018.00231 ec_funded: 1 external_id: arxiv: - '1805.09104' isi: - '000481634500196' file: - access_level: open_access checksum: b25c9bb7cf6e7e6634e692d26d41ead8 content_type: application/pdf creator: akafshda date_created: 2019-04-18T10:36:39Z date_updated: 2020-07-14T12:47:27Z file_id: '6341' file_name: blockchain2018.pdf file_size: 624338 relation: main_file file_date_updated: 2020-07-14T12:47:27Z has_accepted_license: '1' isi: 1 language: - iso: eng license: https://creativecommons.org/licenses/by-nc-nd/4.0/ month: '09' oa: 1 oa_version: Submitted Version page: 1343-1348 project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 266EEEC0-B435-11E9-9278-68D0E5697425 name: Quantitative Game-theoretic Analysis of Blockchain Applications and Smart Contracts - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering publication: Proceedings of the IEEE International Conference on Blockchain publication_identifier: isbn: - '978-1-5386-7975-3 ' publication_status: published publisher: IEEE quality_controlled: '1' related_material: record: - id: '8934' relation: dissertation_contains status: public scopus_import: '1' status: public title: Secure Credit Reporting on the Blockchain tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2018' ... --- _id: '6009' abstract: - lang: eng text: "We study algorithmic questions wrt algebraic path properties in concurrent systems, where the transitions of the system are labeled from a complete, closed semiring. The algebraic path properties can model dataflow analysis problems, the shortest path problem, and many other natural problems that arise in program analysis. We consider that each component of the concurrent system is a graph with constant treewidth, a property satisfied by the controlflow graphs of most programs. We allow for multiple possible queries, which arise naturally in demand driven dataflow analysis. The study of multiple queries allows us to consider the tradeoff between the resource usage of the one-time preprocessing and for each individual query. The traditional approach constructs the product graph of all components and applies the best-known graph algorithm on the product. In this approach, even the answer to a single query requires the transitive closure (i.e., the results of all possible queries), which provides no room for tradeoff between preprocessing and query time.\r\nOur main contributions are algorithms that significantly improve the worst-case running time of the traditional approach, and provide various tradeoffs depending on the number of queries. For example, in a concurrent system of two components, the traditional approach requires hexic time in the worst case for answering one query as well as computing the transitive closure, whereas we show that with one-time preprocessing in almost cubic time, each subsequent query can be answered in at most linear time, and even the transitive closure can be computed in almost quartic time. Furthermore, we establish conditional optimality results showing that the worst-case running time of our algorithms cannot be improved without achieving major breakthroughs in graph algorithms (i.e., improving the worst-case bound for the shortest path problem in general graphs). Preliminary experimental results show that our algorithms perform favorably on several benchmarks.\r\n" article_number: '9' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 - first_name: Amir Kafshdar full_name: Goharshady, Amir Kafshdar id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 citation: ama: Chatterjee K, Ibsen-Jensen R, Goharshady AK, Pavlogiannis A. Algorithms for algebraic path properties in concurrent systems of constant treewidth components. ACM Transactions on Programming Languages and Systems. 2018;40(3). doi:10.1145/3210257 apa: Chatterjee, K., Ibsen-Jensen, R., Goharshady, A. K., & Pavlogiannis, A. (2018). Algorithms for algebraic path properties in concurrent systems of constant treewidth components. ACM Transactions on Programming Languages and Systems. Association for Computing Machinery (ACM). https://doi.org/10.1145/3210257 chicago: Chatterjee, Krishnendu, Rasmus Ibsen-Jensen, Amir Kafshdar Goharshady, and Andreas Pavlogiannis. “Algorithms for Algebraic Path Properties in Concurrent Systems of Constant Treewidth Components.” ACM Transactions on Programming Languages and Systems. Association for Computing Machinery (ACM), 2018. https://doi.org/10.1145/3210257. ieee: K. Chatterjee, R. Ibsen-Jensen, A. K. Goharshady, and A. Pavlogiannis, “Algorithms for algebraic path properties in concurrent systems of constant treewidth components,” ACM Transactions on Programming Languages and Systems, vol. 40, no. 3. Association for Computing Machinery (ACM), 2018. ista: Chatterjee K, Ibsen-Jensen R, Goharshady AK, Pavlogiannis A. 2018. Algorithms for algebraic path properties in concurrent systems of constant treewidth components. ACM Transactions on Programming Languages and Systems. 40(3), 9. mla: Chatterjee, Krishnendu, et al. “Algorithms for Algebraic Path Properties in Concurrent Systems of Constant Treewidth Components.” ACM Transactions on Programming Languages and Systems, vol. 40, no. 3, 9, Association for Computing Machinery (ACM), 2018, doi:10.1145/3210257. short: K. Chatterjee, R. Ibsen-Jensen, A.K. Goharshady, A. Pavlogiannis, ACM Transactions on Programming Languages and Systems 40 (2018). date_created: 2019-02-14T14:31:52Z date_published: 2018-08-01T00:00:00Z date_updated: 2024-03-28T23:30:34Z day: '01' department: - _id: KrCh doi: 10.1145/3210257 ec_funded: 1 external_id: arxiv: - '1510.07565' isi: - '000444694800001' intvolume: ' 40' isi: 1 issue: '3' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1510.07565 month: '08' oa: 1 oa_version: Preprint project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: ACM Transactions on Programming Languages and Systems publication_identifier: issn: - 0164-0925 publication_status: published publisher: Association for Computing Machinery (ACM) quality_controlled: '1' related_material: record: - id: '1437' relation: earlier_version status: public - id: '5441' relation: earlier_version status: public - id: '5442' relation: earlier_version status: public - id: '8934' relation: dissertation_contains status: public scopus_import: '1' status: public title: Algorithms for algebraic path properties in concurrent systems of constant treewidth components type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 40 year: '2018' ... --- _id: '5977' abstract: - lang: eng text: 'We consider the stochastic shortest path (SSP)problem for succinct Markov decision processes(MDPs), where the MDP consists of a set of vari-ables, and a set of nondeterministic rules that up-date the variables. First, we show that several ex-amples from the AI literature can be modeled assuccinct MDPs. Then we present computationalapproaches for upper and lower bounds for theSSP problem: (a) for computing upper bounds, ourmethod is polynomial-time in the implicit descrip-tion of the MDP; (b) for lower bounds, we present apolynomial-time (in the size of the implicit descrip-tion) reduction to quadratic programming. Our ap-proach is applicable even to infinite-state MDPs.Finally, we present experimental results to demon-strate the effectiveness of our approach on severalclassical examples from the AI literature.' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Hongfei full_name: Fu, Hongfei id: 3AAD03D6-F248-11E8-B48F-1D18A9856A87 last_name: Fu - first_name: Amir full_name: Goharshady, Amir id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 - first_name: Nastaran full_name: Okati, Nastaran last_name: Okati citation: ama: 'Chatterjee K, Fu H, Goharshady AK, Okati N. Computational approaches for stochastic shortest path on succinct MDPs. In: Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence. Vol 2018. IJCAI; 2018:4700-4707. doi:10.24963/ijcai.2018/653' apa: 'Chatterjee, K., Fu, H., Goharshady, A. K., & Okati, N. (2018). Computational approaches for stochastic shortest path on succinct MDPs. In Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence (Vol. 2018, pp. 4700–4707). Stockholm, Sweden: IJCAI. https://doi.org/10.24963/ijcai.2018/653' chicago: Chatterjee, Krishnendu, Hongfei Fu, Amir Kafshdar Goharshady, and Nastaran Okati. “Computational Approaches for Stochastic Shortest Path on Succinct MDPs.” In Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, 2018:4700–4707. IJCAI, 2018. https://doi.org/10.24963/ijcai.2018/653. ieee: K. Chatterjee, H. Fu, A. K. Goharshady, and N. Okati, “Computational approaches for stochastic shortest path on succinct MDPs,” in Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, Stockholm, Sweden, 2018, vol. 2018, pp. 4700–4707. ista: 'Chatterjee K, Fu H, Goharshady AK, Okati N. 2018. Computational approaches for stochastic shortest path on succinct MDPs. Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence. IJCAI: International Joint Conference on Artificial Intelligence vol. 2018, 4700–4707.' mla: Chatterjee, Krishnendu, et al. “Computational Approaches for Stochastic Shortest Path on Succinct MDPs.” Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, vol. 2018, IJCAI, 2018, pp. 4700–07, doi:10.24963/ijcai.2018/653. short: K. Chatterjee, H. Fu, A.K. Goharshady, N. Okati, in:, Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence, IJCAI, 2018, pp. 4700–4707. conference: end_date: 2018-07-19 location: Stockholm, Sweden name: 'IJCAI: International Joint Conference on Artificial Intelligence' start_date: 2018-07-13 date_created: 2019-02-13T13:26:27Z date_published: 2018-07-17T00:00:00Z date_updated: 2024-03-28T23:30:34Z day: '17' department: - _id: KrCh doi: 10.24963/ijcai.2018/653 ec_funded: 1 external_id: arxiv: - '1804.08984' isi: - '000764175404118' intvolume: ' 2018' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1804.08984 month: '07' oa: 1 oa_version: Preprint page: 4700-4707 project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence publication_identifier: isbn: - 978-099924112-7 issn: - '10450823' publication_status: published publisher: IJCAI quality_controlled: '1' related_material: record: - id: '8934' relation: dissertation_contains status: public scopus_import: '1' status: public title: Computational approaches for stochastic shortest path on succinct MDPs type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 2018 year: '2018' ... --- _id: '2' abstract: - lang: eng text: Indirect reciprocity explores how humans act when their reputation is at stake, and which social norms they use to assess the actions of others. A crucial question in indirect reciprocity is which social norms can maintain stable cooperation in a society. Past research has highlighted eight such norms, called “leading-eight” strategies. This past research, however, is based on the assumption that all relevant information about other population members is publicly available and that everyone agrees on who is good or bad. Instead, here we explore the reputation dynamics when information is private and noisy. We show that under these conditions, most leading-eight strategies fail to evolve. Those leading-eight strategies that do evolve are unable to sustain full cooperation.Indirect reciprocity is a mechanism for cooperation based on shared moral systems and individual reputations. It assumes that members of a community routinely observe and assess each other and that they use this information to decide who is good or bad, and who deserves cooperation. When information is transmitted publicly, such that all community members agree on each other’s reputation, previous research has highlighted eight crucial moral systems. These “leading-eight” strategies can maintain cooperation and resist invasion by defectors. However, in real populations individuals often hold their own private views of others. Once two individuals disagree about their opinion of some third party, they may also see its subsequent actions in a different light. Their opinions may further diverge over time. Herein, we explore indirect reciprocity when information transmission is private and noisy. We find that in the presence of perception errors, most leading-eight strategies cease to be stable. Even if a leading-eight strategy evolves, cooperation rates may drop considerably when errors are common. Our research highlights the role of reliable information and synchronized reputations to maintain stable moral systems. article_processing_charge: No author: - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X - first_name: Laura full_name: Schmid, Laura id: 38B437DE-F248-11E8-B48F-1D18A9856A87 last_name: Schmid orcid: 0000-0002-6978-7329 - first_name: Josef full_name: Tkadlec, Josef id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87 last_name: Tkadlec orcid: 0000-0002-1097-9684 - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: Hilbe C, Schmid L, Tkadlec J, Chatterjee K, Nowak M. Indirect reciprocity with private, noisy, and incomplete information. PNAS. 2018;115(48):12241-12246. doi:10.1073/pnas.1810565115 apa: Hilbe, C., Schmid, L., Tkadlec, J., Chatterjee, K., & Nowak, M. (2018). Indirect reciprocity with private, noisy, and incomplete information. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1810565115 chicago: Hilbe, Christian, Laura Schmid, Josef Tkadlec, Krishnendu Chatterjee, and Martin Nowak. “Indirect Reciprocity with Private, Noisy, and Incomplete Information.” PNAS. National Academy of Sciences, 2018. https://doi.org/10.1073/pnas.1810565115. ieee: C. Hilbe, L. Schmid, J. Tkadlec, K. Chatterjee, and M. Nowak, “Indirect reciprocity with private, noisy, and incomplete information,” PNAS, vol. 115, no. 48. National Academy of Sciences, pp. 12241–12246, 2018. ista: Hilbe C, Schmid L, Tkadlec J, Chatterjee K, Nowak M. 2018. Indirect reciprocity with private, noisy, and incomplete information. PNAS. 115(48), 12241–12246. mla: Hilbe, Christian, et al. “Indirect Reciprocity with Private, Noisy, and Incomplete Information.” PNAS, vol. 115, no. 48, National Academy of Sciences, 2018, pp. 12241–46, doi:10.1073/pnas.1810565115. short: C. Hilbe, L. Schmid, J. Tkadlec, K. Chatterjee, M. Nowak, PNAS 115 (2018) 12241–12246. date_created: 2018-12-11T11:44:05Z date_published: 2018-11-27T00:00:00Z date_updated: 2024-03-28T23:30:45Z day: '27' department: - _id: KrCh doi: 10.1073/pnas.1810565115 ec_funded: 1 external_id: isi: - '000451351000063' pmid: - '30429320' intvolume: ' 115' isi: 1 issue: '48' language: - iso: eng main_file_link: - open_access: '1' url: https://www.ncbi.nlm.nih.gov/pubmed/30429320 month: '11' oa: 1 oa_version: Submitted Version page: 12241-12246 pmid: 1 project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: PNAS publication_status: published publisher: National Academy of Sciences quality_controlled: '1' related_material: link: - description: News on IST Homepage relation: press_release url: https://ist.ac.at/en/news/no-cooperation-without-open-communication/ record: - id: '10293' relation: dissertation_contains status: public scopus_import: '1' status: public title: Indirect reciprocity with private, noisy, and incomplete information type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 115 year: '2018' ... --- _id: '10418' abstract: - lang: eng text: We present a new proof rule for proving almost-sure termination of probabilistic programs, including those that contain demonic non-determinism. An important question for a probabilistic program is whether the probability mass of all its diverging runs is zero, that is that it terminates "almost surely". Proving that can be hard, and this paper presents a new method for doing so. It applies directly to the program's source code, even if the program contains demonic choice. Like others, we use variant functions (a.k.a. "super-martingales") that are real-valued and decrease randomly on each loop iteration; but our key innovation is that the amount as well as the probability of the decrease are parametric. We prove the soundness of the new rule, indicate where its applicability goes beyond existing rules, and explain its connection to classical results on denumerable (non-demonic) Markov chains. acknowledgement: "McIver and Morgan are grateful to David Basin and the Information Security Group at ETH Zürich for hosting a six-month stay in Switzerland, during part of which this work began. And thanks particularly to Andreas Lochbihler, who shared with us the probabilistic termination problem that led to it. They acknowledge the support of ARC grant DP140101119. Part of this work was carried out during the Workshop on Probabilistic Programming Semantics\r\nat McGill University’s Bellairs Research Institute on Barbados organised by Alexandra Silva and\r\nPrakash Panangaden. Kaminski and Katoen are grateful to Sebastian Junges for spotting a flaw in §5.4." article_number: '33' article_processing_charge: No article_type: original author: - first_name: Annabelle full_name: Mciver, Annabelle last_name: Mciver - first_name: Carroll full_name: Morgan, Carroll last_name: Morgan - first_name: Benjamin Lucien full_name: Kaminski, Benjamin Lucien last_name: Kaminski - first_name: Joost P full_name: Katoen, Joost P id: 4524F760-F248-11E8-B48F-1D18A9856A87 last_name: Katoen citation: ama: Mciver A, Morgan C, Kaminski BL, Katoen JP. A new proof rule for almost-sure termination. Proceedings of the ACM on Programming Languages. 2017;2(POPL). doi:10.1145/3158121 apa: 'Mciver, A., Morgan, C., Kaminski, B. L., & Katoen, J. P. (2017). A new proof rule for almost-sure termination. Proceedings of the ACM on Programming Languages. Los Angeles, CA, United States: Association for Computing Machinery. https://doi.org/10.1145/3158121' chicago: Mciver, Annabelle, Carroll Morgan, Benjamin Lucien Kaminski, and Joost P Katoen. “A New Proof Rule for Almost-Sure Termination.” Proceedings of the ACM on Programming Languages. Association for Computing Machinery, 2017. https://doi.org/10.1145/3158121. ieee: A. Mciver, C. Morgan, B. L. Kaminski, and J. P. Katoen, “A new proof rule for almost-sure termination,” Proceedings of the ACM on Programming Languages, vol. 2, no. POPL. Association for Computing Machinery, 2017. ista: Mciver A, Morgan C, Kaminski BL, Katoen JP. 2017. A new proof rule for almost-sure termination. Proceedings of the ACM on Programming Languages. 2(POPL), 33. mla: Mciver, Annabelle, et al. “A New Proof Rule for Almost-Sure Termination.” Proceedings of the ACM on Programming Languages, vol. 2, no. POPL, 33, Association for Computing Machinery, 2017, doi:10.1145/3158121. short: A. Mciver, C. Morgan, B.L. Kaminski, J.P. Katoen, Proceedings of the ACM on Programming Languages 2 (2017). conference: end_date: 2018-01-13 location: Los Angeles, CA, United States name: 'POPL: Programming Languages' start_date: 2018-01-07 date_created: 2021-12-05T23:01:49Z date_published: 2017-12-07T00:00:00Z date_updated: 2021-12-07T08:04:14Z day: '07' department: - _id: KrCh - _id: ToHe doi: 10.1145/3158121 external_id: arxiv: - '1711.03588' intvolume: ' 2' issue: POPL language: - iso: eng main_file_link: - open_access: '1' url: https://dl.acm.org/doi/10.1145/3158121 month: '12' oa: 1 oa_version: Published Version publication: Proceedings of the ACM on Programming Languages publication_identifier: eissn: - 2475-1421 publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' scopus_import: '1' status: public title: A new proof rule for almost-sure termination type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 2 year: '2017' ... --- _id: '464' abstract: - lang: eng text: The computation of the winning set for parity objectives and for Streett objectives in graphs as well as in game graphs are central problems in computer-aided verification, with application to the verification of closed systems with strong fairness conditions, the verification of open systems, checking interface compatibility, well-formedness of specifications, and the synthesis of reactive systems. We show how to compute the winning set on n vertices for (1) parity-3 (aka one-pair Streett) objectives in game graphs in time O(n5/2) and for (2) k-pair Streett objectives in graphs in time O(n2+nklogn). For both problems this gives faster algorithms for dense graphs and represents the first improvement in asymptotic running time in 15 years. article_number: '26' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Veronika full_name: Loitzenbauer, Veronika last_name: Loitzenbauer citation: ama: Chatterjee K, Henzinger MH, Loitzenbauer V. Improved algorithms for parity and Streett objectives. Logical Methods in Computer Science. 2017;13(3). doi:10.23638/LMCS-13(3:26)2017 apa: Chatterjee, K., Henzinger, M. H., & Loitzenbauer, V. (2017). Improved algorithms for parity and Streett objectives. Logical Methods in Computer Science. International Federation of Computational Logic. https://doi.org/10.23638/LMCS-13(3:26)2017 chicago: Chatterjee, Krishnendu, Monika H Henzinger, and Veronika Loitzenbauer. “Improved Algorithms for Parity and Streett Objectives.” Logical Methods in Computer Science. International Federation of Computational Logic, 2017. https://doi.org/10.23638/LMCS-13(3:26)2017. ieee: K. Chatterjee, M. H. Henzinger, and V. Loitzenbauer, “Improved algorithms for parity and Streett objectives,” Logical Methods in Computer Science, vol. 13, no. 3. International Federation of Computational Logic, 2017. ista: Chatterjee K, Henzinger MH, Loitzenbauer V. 2017. Improved algorithms for parity and Streett objectives. Logical Methods in Computer Science. 13(3), 26. mla: Chatterjee, Krishnendu, et al. “Improved Algorithms for Parity and Streett Objectives.” Logical Methods in Computer Science, vol. 13, no. 3, 26, International Federation of Computational Logic, 2017, doi:10.23638/LMCS-13(3:26)2017. short: K. Chatterjee, M.H. Henzinger, V. Loitzenbauer, Logical Methods in Computer Science 13 (2017). date_created: 2018-12-11T11:46:37Z date_published: 2017-09-26T00:00:00Z date_updated: 2023-02-23T10:08:55Z day: '26' ddc: - '004' department: - _id: KrCh doi: 10.23638/LMCS-13(3:26)2017 ec_funded: 1 external_id: arxiv: - '1410.0833' file: - access_level: open_access checksum: 12d469ae69b80361333d7dead965cf5d content_type: application/pdf creator: system date_created: 2018-12-12T10:13:27Z date_updated: 2020-07-14T12:46:32Z file_id: '5010' file_name: IST-2018-956-v1+1_2017_Chatterjee_Improved_algorithms.pdf file_size: 582940 relation: main_file file_date_updated: 2020-07-14T12:46:32Z has_accepted_license: '1' intvolume: ' 13' issue: '3' language: - iso: eng license: https://creativecommons.org/licenses/by-nd/4.0/ month: '09' oa: 1 oa_version: Published Version project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: Logical Methods in Computer Science publication_identifier: issn: - 1860-5974 publication_status: published publisher: International Federation of Computational Logic publist_id: '7357' pubrep_id: '956' quality_controlled: '1' related_material: record: - id: '1661' relation: earlier_version status: public scopus_import: '1' status: public title: Improved algorithms for parity and Streett objectives tmp: image: /image/cc_by_nd.png legal_code_url: https://creativecommons.org/licenses/by-nd/4.0/legalcode name: Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) short: CC BY-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 13 year: '2017' ... --- _id: '466' abstract: - lang: eng text: 'We consider Markov decision processes (MDPs) with multiple limit-average (or mean-payoff) objectives. There exist two different views: (i) the expectation semantics, where the goal is to optimize the expected mean-payoff objective, and (ii) the satisfaction semantics, where the goal is to maximize the probability of runs such that the mean-payoff value stays above a given vector. We consider optimization with respect to both objectives at once, thus unifying the existing semantics. Precisely, the goal is to optimize the expectation while ensuring the satisfaction constraint. Our problem captures the notion of optimization with respect to strategies that are risk-averse (i.e., ensure certain probabilistic guarantee). Our main results are as follows: First, we present algorithms for the decision problems which are always polynomial in the size of the MDP. We also show that an approximation of the Pareto-curve can be computed in time polynomial in the size of the MDP, and the approximation factor, but exponential in the number of dimensions. Second, we present a complete characterization of the strategy complexity (in terms of memory bounds and randomization) required to solve our problem. ' article_number: '15' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Zuzana full_name: Křetínská, Zuzana last_name: Křetínská - first_name: Jan full_name: Kretinsky, Jan id: 44CEF464-F248-11E8-B48F-1D18A9856A87 last_name: Kretinsky orcid: 0000-0002-8122-2881 citation: ama: Chatterjee K, Křetínská Z, Kretinsky J. Unifying two views on multiple mean-payoff objectives in Markov decision processes. Logical Methods in Computer Science. 2017;13(2). doi:10.23638/LMCS-13(2:15)2017 apa: Chatterjee, K., Křetínská, Z., & Kretinsky, J. (2017). Unifying two views on multiple mean-payoff objectives in Markov decision processes. Logical Methods in Computer Science. International Federation of Computational Logic. https://doi.org/10.23638/LMCS-13(2:15)2017 chicago: Chatterjee, Krishnendu, Zuzana Křetínská, and Jan Kretinsky. “Unifying Two Views on Multiple Mean-Payoff Objectives in Markov Decision Processes.” Logical Methods in Computer Science. International Federation of Computational Logic, 2017. https://doi.org/10.23638/LMCS-13(2:15)2017. ieee: K. Chatterjee, Z. Křetínská, and J. Kretinsky, “Unifying two views on multiple mean-payoff objectives in Markov decision processes,” Logical Methods in Computer Science, vol. 13, no. 2. International Federation of Computational Logic, 2017. ista: Chatterjee K, Křetínská Z, Kretinsky J. 2017. Unifying two views on multiple mean-payoff objectives in Markov decision processes. Logical Methods in Computer Science. 13(2), 15. mla: Chatterjee, Krishnendu, et al. “Unifying Two Views on Multiple Mean-Payoff Objectives in Markov Decision Processes.” Logical Methods in Computer Science, vol. 13, no. 2, 15, International Federation of Computational Logic, 2017, doi:10.23638/LMCS-13(2:15)2017. short: K. Chatterjee, Z. Křetínská, J. Kretinsky, Logical Methods in Computer Science 13 (2017). date_created: 2018-12-11T11:46:38Z date_published: 2017-07-03T00:00:00Z date_updated: 2023-02-23T12:26:16Z day: '03' ddc: - '004' department: - _id: KrCh doi: 10.23638/LMCS-13(2:15)2017 ec_funded: 1 file: - access_level: open_access checksum: bfa405385ec6229ad5ead89ab5751639 content_type: application/pdf creator: system date_created: 2018-12-12T10:18:32Z date_updated: 2020-07-14T12:46:33Z file_id: '5354' file_name: IST-2018-957-v1+1_2017_Chatterjee_Unifying_two.pdf file_size: 511832 relation: main_file file_date_updated: 2020-07-14T12:46:33Z has_accepted_license: '1' intvolume: ' 13' issue: '2' language: - iso: eng month: '07' oa: 1 oa_version: Published Version project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2590DB08-B435-11E9-9278-68D0E5697425 call_identifier: H2020 grant_number: '701309' name: Atomic-Resolution Structures of Mitochondrial Respiratory Chain Supercomplexes (H2020) publication: Logical Methods in Computer Science publication_identifier: issn: - '18605974' publication_status: published publisher: International Federation of Computational Logic publist_id: '7355' pubrep_id: '957' quality_controlled: '1' related_material: record: - id: '1657' relation: earlier_version status: public - id: '5429' relation: earlier_version status: public - id: '5435' relation: earlier_version status: public scopus_import: 1 status: public title: Unifying two views on multiple mean-payoff objectives in Markov decision processes tmp: image: /image/cc_by_nd.png legal_code_url: https://creativecommons.org/licenses/by-nd/4.0/legalcode name: Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) short: CC BY-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 13 year: '2017' ... --- _id: '467' abstract: - lang: eng text: Recently there has been a significant effort to handle quantitative properties in formal verification and synthesis. While weighted automata over finite and infinite words provide a natural and flexible framework to express quantitative properties, perhaps surprisingly, some basic system properties such as average response time cannot be expressed using weighted automata or in any other known decidable formalism. In this work, we introduce nested weighted automata as a natural extension of weighted automata, which makes it possible to express important quantitative properties such as average response time. In nested weighted automata, a master automaton spins off and collects results from weighted slave automata, each of which computes a quantity along a finite portion of an infinite word. Nested weighted automata can be viewed as the quantitative analogue of monitor automata, which are used in runtime verification. We establish an almost-complete decidability picture for the basic decision problems about nested weighted automata and illustrate their applicability in several domains. In particular, nested weighted automata can be used to decide average response time properties. article_number: '31' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Jan full_name: Otop, Jan id: 2FC5DA74-F248-11E8-B48F-1D18A9856A87 last_name: Otop citation: ama: Chatterjee K, Henzinger TA, Otop J. Nested weighted automata. ACM Transactions on Computational Logic (TOCL). 2017;18(4). doi:10.1145/3152769 apa: Chatterjee, K., Henzinger, T. A., & Otop, J. (2017). Nested weighted automata. ACM Transactions on Computational Logic (TOCL). ACM. https://doi.org/10.1145/3152769 chicago: Chatterjee, Krishnendu, Thomas A Henzinger, and Jan Otop. “Nested Weighted Automata.” ACM Transactions on Computational Logic (TOCL). ACM, 2017. https://doi.org/10.1145/3152769. ieee: K. Chatterjee, T. A. Henzinger, and J. Otop, “Nested weighted automata,” ACM Transactions on Computational Logic (TOCL), vol. 18, no. 4. ACM, 2017. ista: Chatterjee K, Henzinger TA, Otop J. 2017. Nested weighted automata. ACM Transactions on Computational Logic (TOCL). 18(4), 31. mla: Chatterjee, Krishnendu, et al. “Nested Weighted Automata.” ACM Transactions on Computational Logic (TOCL), vol. 18, no. 4, 31, ACM, 2017, doi:10.1145/3152769. short: K. Chatterjee, T.A. Henzinger, J. Otop, ACM Transactions on Computational Logic (TOCL) 18 (2017). date_created: 2018-12-11T11:46:38Z date_published: 2017-12-01T00:00:00Z date_updated: 2023-02-23T12:26:19Z day: '01' department: - _id: KrCh - _id: ToHe doi: 10.1145/3152769 ec_funded: 1 external_id: arxiv: - '1606.03598' intvolume: ' 18' issue: '4' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1606.03598 month: '12' oa: 1 oa_version: Preprint project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: The Wittgenstein Prize - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2587B514-B435-11E9-9278-68D0E5697425 name: Microsoft Research Faculty Fellowship publication: ACM Transactions on Computational Logic (TOCL) publication_identifier: issn: - '15293785' publication_status: published publisher: ACM publist_id: '7354' quality_controlled: '1' related_material: record: - id: '1656' relation: earlier_version status: public - id: '5415' relation: earlier_version status: public - id: '5436' relation: earlier_version status: public scopus_import: 1 status: public title: Nested weighted automata type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 18 year: '2017' ... --- _id: '465' abstract: - lang: eng text: 'The edit distance between two words w 1 , w 2 is the minimal number of word operations (letter insertions, deletions, and substitutions) necessary to transform w 1 to w 2 . The edit distance generalizes to languages L 1 , L 2 , where the edit distance from L 1 to L 2 is the minimal number k such that for every word from L 1 there exists a word in L 2 with edit distance at most k . We study the edit distance computation problem between pushdown automata and their subclasses. The problem of computing edit distance to a pushdown automaton is undecidable, and in practice, the interesting question is to compute the edit distance from a pushdown automaton (the implementation, a standard model for programs with recursion) to a regular language (the specification). In this work, we present a complete picture of decidability and complexity for the following problems: (1) deciding whether, for a given threshold k , the edit distance from a pushdown automaton to a finite automaton is at most k , and (2) deciding whether the edit distance from a pushdown automaton to a finite automaton is finite. ' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 - first_name: Jan full_name: Otop, Jan last_name: Otop citation: ama: Chatterjee K, Henzinger TA, Ibsen-Jensen R, Otop J. Edit distance for pushdown automata. Logical Methods in Computer Science. 2017;13(3). doi:10.23638/LMCS-13(3:23)2017 apa: Chatterjee, K., Henzinger, T. A., Ibsen-Jensen, R., & Otop, J. (2017). Edit distance for pushdown automata. Logical Methods in Computer Science. International Federation of Computational Logic. https://doi.org/10.23638/LMCS-13(3:23)2017 chicago: Chatterjee, Krishnendu, Thomas A Henzinger, Rasmus Ibsen-Jensen, and Jan Otop. “Edit Distance for Pushdown Automata.” Logical Methods in Computer Science. International Federation of Computational Logic, 2017. https://doi.org/10.23638/LMCS-13(3:23)2017. ieee: K. Chatterjee, T. A. Henzinger, R. Ibsen-Jensen, and J. Otop, “Edit distance for pushdown automata,” Logical Methods in Computer Science, vol. 13, no. 3. International Federation of Computational Logic, 2017. ista: Chatterjee K, Henzinger TA, Ibsen-Jensen R, Otop J. 2017. Edit distance for pushdown automata. Logical Methods in Computer Science. 13(3). mla: Chatterjee, Krishnendu, et al. “Edit Distance for Pushdown Automata.” Logical Methods in Computer Science, vol. 13, no. 3, International Federation of Computational Logic, 2017, doi:10.23638/LMCS-13(3:23)2017. short: K. Chatterjee, T.A. Henzinger, R. Ibsen-Jensen, J. Otop, Logical Methods in Computer Science 13 (2017). date_created: 2018-12-11T11:46:37Z date_published: 2017-09-13T00:00:00Z date_updated: 2023-02-23T12:26:25Z day: '13' ddc: - '004' department: - _id: KrCh - _id: ToHe doi: 10.23638/LMCS-13(3:23)2017 ec_funded: 1 file: - access_level: open_access checksum: 08041379ba408d40664f449eb5907a8f content_type: application/pdf creator: system date_created: 2018-12-12T10:14:37Z date_updated: 2020-07-14T12:46:33Z file_id: '5090' file_name: IST-2015-321-v1+1_main.pdf file_size: 279071 relation: main_file - access_level: open_access checksum: 08041379ba408d40664f449eb5907a8f content_type: application/pdf creator: system date_created: 2018-12-12T10:14:38Z date_updated: 2020-07-14T12:46:33Z file_id: '5091' file_name: IST-2018-955-v1+1_2017_Chatterjee_Edit_distance.pdf file_size: 279071 relation: main_file file_date_updated: 2020-07-14T12:46:33Z has_accepted_license: '1' intvolume: ' 13' issue: '3' language: - iso: eng month: '09' oa: 1 oa_version: Published Version project: - _id: 25F5A88A-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11402-N23 name: Moderne Concurrency Paradigms - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: The Wittgenstein Prize - _id: 25EE3708-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '267989' name: Quantitative Reactive Modeling - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory publication: Logical Methods in Computer Science publication_identifier: issn: - '18605974' publication_status: published publisher: International Federation of Computational Logic publist_id: '7356' pubrep_id: '955' quality_controlled: '1' related_material: record: - id: '1610' relation: earlier_version status: public - id: '5438' relation: earlier_version status: public scopus_import: 1 status: public title: Edit distance for pushdown automata tmp: image: /image/cc_by_nd.png legal_code_url: https://creativecommons.org/licenses/by-nd/4.0/legalcode name: Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) short: CC BY-ND (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 13 year: '2017' ... --- _id: '512' abstract: - lang: eng text: 'The fixation probability is the probability that a new mutant introduced in a homogeneous population eventually takes over the entire population. The fixation probability is a fundamental quantity of natural selection, and known to depend on the population structure. Amplifiers of natural selection are population structures which increase the fixation probability of advantageous mutants, as compared to the baseline case of well-mixed populations. In this work we focus on symmetric population structures represented as undirected graphs. In the regime of undirected graphs, the strongest amplifier known has been the Star graph, and the existence of undirected graphs with stronger amplification properties has remained open for over a decade. In this work we present the Comet and Comet-swarm families of undirected graphs. We show that for a range of fitness values of the mutants, the Comet and Cometswarm graphs have fixation probability strictly larger than the fixation probability of the Star graph, for fixed population size and at the limit of large populations, respectively. ' article_number: '82' article_processing_charge: No author: - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 - first_name: Josef full_name: Tkadlec, Josef id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87 last_name: Tkadlec orcid: 0000-0002-1097-9684 - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: 'Pavlogiannis A, Tkadlec J, Chatterjee K, Nowak M. Amplification on undirected population structures: Comets beat stars. Scientific Reports. 2017;7(1). doi:10.1038/s41598-017-00107-w' apa: 'Pavlogiannis, A., Tkadlec, J., Chatterjee, K., & Nowak, M. (2017). Amplification on undirected population structures: Comets beat stars. Scientific Reports. Nature Publishing Group. https://doi.org/10.1038/s41598-017-00107-w' chicago: 'Pavlogiannis, Andreas, Josef Tkadlec, Krishnendu Chatterjee, and Martin Nowak. “Amplification on Undirected Population Structures: Comets Beat Stars.” Scientific Reports. Nature Publishing Group, 2017. https://doi.org/10.1038/s41598-017-00107-w.' ieee: 'A. Pavlogiannis, J. Tkadlec, K. Chatterjee, and M. Nowak, “Amplification on undirected population structures: Comets beat stars,” Scientific Reports, vol. 7, no. 1. Nature Publishing Group, 2017.' ista: 'Pavlogiannis A, Tkadlec J, Chatterjee K, Nowak M. 2017. Amplification on undirected population structures: Comets beat stars. Scientific Reports. 7(1), 82.' mla: 'Pavlogiannis, Andreas, et al. “Amplification on Undirected Population Structures: Comets Beat Stars.” Scientific Reports, vol. 7, no. 1, 82, Nature Publishing Group, 2017, doi:10.1038/s41598-017-00107-w.' short: A. Pavlogiannis, J. Tkadlec, K. Chatterjee, M. Nowak, Scientific Reports 7 (2017). date_created: 2018-12-11T11:46:53Z date_published: 2017-03-06T00:00:00Z date_updated: 2023-02-23T12:26:57Z day: '06' ddc: - '004' department: - _id: KrCh doi: 10.1038/s41598-017-00107-w ec_funded: 1 file: - access_level: open_access checksum: 7d05cbdd914e194a019c0f91fb64e9a8 content_type: application/pdf creator: system date_created: 2018-12-12T10:18:35Z date_updated: 2020-07-14T12:46:36Z file_id: '5357' file_name: IST-2018-938-v1+1_2017_Pavlogiannis_Amplification_on.pdf file_size: 1536783 relation: main_file file_date_updated: 2020-07-14T12:46:36Z has_accepted_license: '1' intvolume: ' 7' issue: '1' language: - iso: eng month: '03' oa: 1 oa_version: Published Version project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: Scientific Reports publication_identifier: issn: - '20452322' publication_status: published publisher: Nature Publishing Group publist_id: '7307' pubrep_id: '938' quality_controlled: '1' related_material: record: - id: '5449' relation: earlier_version status: public scopus_import: 1 status: public title: 'Amplification on undirected population structures: Comets beat stars' tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 7 year: '2017' ... --- _id: '10416' abstract: - lang: eng text: 'A fundamental algorithmic problem at the heart of static analysis is Dyck reachability. The input is a graph where the edges are labeled with different types of opening and closing parentheses, and the reachability information is computed via paths whose parentheses are properly matched. We present new results for Dyck reachability problems with applications to alias analysis and data-dependence analysis. Our main contributions, that include improved upper bounds as well as lower bounds that establish optimality guarantees, are as follows: First, we consider Dyck reachability on bidirected graphs, which is the standard way of performing field-sensitive points-to analysis. Given a bidirected graph with n nodes and m edges, we present: (i) an algorithm with worst-case running time O(m + n · α(n)), where α(n) is the inverse Ackermann function, improving the previously known O(n2) time bound; (ii) a matching lower bound that shows that our algorithm is optimal wrt to worst-case complexity; and (iii) an optimal average-case upper bound of O(m) time, improving the previously known O(m · logn) bound. Second, we consider the problem of context-sensitive data-dependence analysis, where the task is to obtain analysis summaries of library code in the presence of callbacks. Our algorithm preprocesses libraries in almost linear time, after which the contribution of the library in the complexity of the client analysis is only linear, and only wrt the number of call sites. Third, we prove that combinatorial algorithms for Dyck reachability on general graphs with truly sub-cubic bounds cannot be obtained without obtaining sub-cubic combinatorial algorithms for Boolean Matrix Multiplication, which is a long-standing open problem. Thus we establish that the existing combinatorial algorithms for Dyck reachability are (conditionally) optimal for general graphs. We also show that the same hardness holds for graphs of constant treewidth. Finally, we provide a prototype implementation of our algorithms for both alias analysis and data-dependence analysis. Our experimental evaluation demonstrates that the new algorithms significantly outperform all existing methods on the two problems, over real-world benchmarks.' acknowledgement: "The research was partly supported by Austrian Science Fund (FWF) Grant No P23499-N23, FWF NFN Grant No S11407-N23 (RiSE/SHiNE), and ERC Start grant (279307: Graph Games).\r\n" article_number: '30' article_processing_charge: No article_type: original author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Bhavya full_name: Choudhary, Bhavya last_name: Choudhary - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 citation: ama: Chatterjee K, Choudhary B, Pavlogiannis A. Optimal Dyck reachability for data-dependence and Alias analysis. Proceedings of the ACM on Programming Languages. 2017;2(POPL). doi:10.1145/3158118 apa: 'Chatterjee, K., Choudhary, B., & Pavlogiannis, A. (2017). Optimal Dyck reachability for data-dependence and Alias analysis. Proceedings of the ACM on Programming Languages. Los Angeles, CA, United States: Association for Computing Machinery. https://doi.org/10.1145/3158118' chicago: Chatterjee, Krishnendu, Bhavya Choudhary, and Andreas Pavlogiannis. “Optimal Dyck Reachability for Data-Dependence and Alias Analysis.” Proceedings of the ACM on Programming Languages. Association for Computing Machinery, 2017. https://doi.org/10.1145/3158118. ieee: K. Chatterjee, B. Choudhary, and A. Pavlogiannis, “Optimal Dyck reachability for data-dependence and Alias analysis,” Proceedings of the ACM on Programming Languages, vol. 2, no. POPL. Association for Computing Machinery, 2017. ista: Chatterjee K, Choudhary B, Pavlogiannis A. 2017. Optimal Dyck reachability for data-dependence and Alias analysis. Proceedings of the ACM on Programming Languages. 2(POPL), 30. mla: Chatterjee, Krishnendu, et al. “Optimal Dyck Reachability for Data-Dependence and Alias Analysis.” Proceedings of the ACM on Programming Languages, vol. 2, no. POPL, 30, Association for Computing Machinery, 2017, doi:10.1145/3158118. short: K. Chatterjee, B. Choudhary, A. Pavlogiannis, Proceedings of the ACM on Programming Languages 2 (2017). conference: end_date: 2018-01-13 location: Los Angeles, CA, United States name: 'POPL: Programming Languages' start_date: 2018-01-07 date_created: 2021-12-05T23:01:48Z date_published: 2017-12-27T00:00:00Z date_updated: 2023-02-23T12:27:13Z day: '27' ddc: - '000' department: - _id: KrCh doi: 10.1145/3158118 ec_funded: 1 external_id: arxiv: - '1910.00241' file: - access_level: open_access checksum: faa3f7b3fe8aab84b50ed805c26a0ee5 content_type: application/pdf creator: cchlebak date_created: 2021-12-07T08:06:28Z date_updated: 2021-12-07T08:06:28Z file_id: '10421' file_name: 2017_ACMProgLang_Chatterjee.pdf file_size: 460188 relation: main_file success: 1 file_date_updated: 2021-12-07T08:06:28Z has_accepted_license: '1' intvolume: ' 2' issue: POPL language: - iso: eng month: '12' oa: 1 oa_version: Published Version project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering publication: Proceedings of the ACM on Programming Languages publication_identifier: eissn: - 2475-1421 publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' related_material: record: - id: '5455' relation: earlier_version status: public scopus_import: '1' status: public title: Optimal Dyck reachability for data-dependence and Alias analysis tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 2 year: '2017' ... --- _id: '5455' abstract: - lang: eng text: 'A fundamental algorithmic problem at the heart of static analysis is Dyck reachability. The input is a graphwhere the edges are labeled with different types of opening and closing parentheses, and the reachabilityinformation is computed via paths whose parentheses are properly matched. We present new results for Dyckreachability problems with applications to alias analysis and data-dependence analysis. Our main contributions,that include improved upper bounds as well as lower bounds that establish optimality guarantees, are asfollows:First, we consider Dyck reachability on bidirected graphs, which is the standard way of performing field-sensitive points-to analysis. Given a bidirected graph withnnodes andmedges, we present: (i) an algorithmwith worst-case running timeO(m+n·α(n)), whereα(n)is the inverse Ackermann function, improving thepreviously knownO(n2)time bound; (ii) a matching lower bound that shows that our algorithm is optimalwrt to worst-case complexity; and (iii) an optimal average-case upper bound ofO(m)time, improving thepreviously knownO(m·logn)bound.Second, we consider the problem of context-sensitive data-dependence analysis, where the task is to obtainanalysis summaries of library code in the presence of callbacks. Our algorithm preprocesses libraries in almostlinear time, after which the contribution of the library in the complexity of the client analysis is only linear,and only wrt the number of call sites.Third, we prove that combinatorial algorithms for Dyck reachability on general graphs with truly sub-cubic bounds cannot be obtained without obtaining sub-cubic combinatorial algorithms for Boolean MatrixMultiplication, which is a long-standing open problem. Thus we establish that the existing combinatorialalgorithms for Dyck reachability are (conditionally) optimal for general graphs. We also show that the samehardness holds for graphs of constant treewidth.Finally, we provide a prototype implementation of our algorithms for both alias analysis and data-dependenceanalysis. Our experimental evaluation demonstrates that the new algorithms significantly outperform allexisting methods on the two problems, over real-world benchmarks.' alternative_title: - IST Austria Technical Report article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Bhavya full_name: Choudhary, Bhavya last_name: Choudhary - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 citation: ama: Chatterjee K, Choudhary B, Pavlogiannis A. Optimal Dyck Reachability for Data-Dependence and Alias Analysis. IST Austria; 2017. doi:10.15479/AT:IST-2017-870-v1-1 apa: Chatterjee, K., Choudhary, B., & Pavlogiannis, A. (2017). Optimal Dyck reachability for data-dependence and alias analysis. IST Austria. https://doi.org/10.15479/AT:IST-2017-870-v1-1 chicago: Chatterjee, Krishnendu, Bhavya Choudhary, and Andreas Pavlogiannis. Optimal Dyck Reachability for Data-Dependence and Alias Analysis. IST Austria, 2017. https://doi.org/10.15479/AT:IST-2017-870-v1-1. ieee: K. Chatterjee, B. Choudhary, and A. Pavlogiannis, Optimal Dyck reachability for data-dependence and alias analysis. IST Austria, 2017. ista: Chatterjee K, Choudhary B, Pavlogiannis A. 2017. Optimal Dyck reachability for data-dependence and alias analysis, IST Austria, 37p. mla: Chatterjee, Krishnendu, et al. Optimal Dyck Reachability for Data-Dependence and Alias Analysis. IST Austria, 2017, doi:10.15479/AT:IST-2017-870-v1-1. short: K. Chatterjee, B. Choudhary, A. Pavlogiannis, Optimal Dyck Reachability for Data-Dependence and Alias Analysis, IST Austria, 2017. date_created: 2018-12-12T11:39:26Z date_published: 2017-10-23T00:00:00Z date_updated: 2023-02-21T15:54:10Z day: '23' ddc: - '000' department: - _id: KrCh doi: 10.15479/AT:IST-2017-870-v1-1 file: - access_level: open_access checksum: 177a84a46e3ac17e87b31534ad16a4c9 content_type: application/pdf creator: system date_created: 2018-12-12T11:54:02Z date_updated: 2020-07-14T12:46:59Z file_id: '5524' file_name: IST-2017-870-v1+1_main.pdf file_size: 960491 relation: main_file file_date_updated: 2020-07-14T12:46:59Z has_accepted_license: '1' language: - iso: eng month: '10' oa: 1 oa_version: Published Version page: '37' publication_identifier: issn: - 2664-1690 publication_status: published publisher: IST Austria pubrep_id: '870' related_material: record: - id: '10416' relation: later_version status: public status: public title: Optimal Dyck reachability for data-dependence and alias analysis type: technical_report user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 year: '2017' ... --- _id: '10417' abstract: - lang: eng text: "We present a new dynamic partial-order reduction method for stateless model checking of concurrent programs. A common approach for exploring program behaviors relies on enumerating the traces of the program, without storing the visited states (aka stateless exploration). As the number of distinct traces grows exponentially, dynamic partial-order reduction (DPOR) techniques have been successfully used to partition the space of traces into equivalence classes (Mazurkiewicz partitioning), with the goal of exploring only few representative traces from each class.\r\n\r\nWe introduce a new equivalence on traces under sequential consistency semantics, which we call the observation equivalence. Two traces are observationally equivalent if every read event observes the same write event in both traces. While the traditional Mazurkiewicz equivalence is control-centric, our new definition is data-centric. We show that our observation equivalence is coarser than the Mazurkiewicz equivalence, and in many cases even exponentially coarser. We devise a DPOR exploration of the trace space, called data-centric DPOR, based on the observation equivalence." acknowledgement: "The research was partly supported by Austrian Science Fund (FWF) Grant No P23499- N23, FWF\r\nNFN Grant No S11407-N23 (RiSE/SHiNE), ERC Start grant (279307: Graph Games), and Czech\r\nScience Foundation grant GBP202/12/G061." article_number: '31' article_processing_charge: No article_type: original author: - first_name: Marek full_name: Chalupa, Marek last_name: Chalupa - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 - first_name: Nishant full_name: Sinha, Nishant last_name: Sinha - first_name: Kapil full_name: Vaidya, Kapil last_name: Vaidya citation: ama: Chalupa M, Chatterjee K, Pavlogiannis A, Sinha N, Vaidya K. Data-centric dynamic partial order reduction. Proceedings of the ACM on Programming Languages. 2017;2(POPL). doi:10.1145/3158119 apa: 'Chalupa, M., Chatterjee, K., Pavlogiannis, A., Sinha, N., & Vaidya, K. (2017). Data-centric dynamic partial order reduction. Proceedings of the ACM on Programming Languages. Los Angeles, CA, United States: Association for Computing Machinery. https://doi.org/10.1145/3158119' chicago: Chalupa, Marek, Krishnendu Chatterjee, Andreas Pavlogiannis, Nishant Sinha, and Kapil Vaidya. “Data-Centric Dynamic Partial Order Reduction.” Proceedings of the ACM on Programming Languages. Association for Computing Machinery, 2017. https://doi.org/10.1145/3158119. ieee: M. Chalupa, K. Chatterjee, A. Pavlogiannis, N. Sinha, and K. Vaidya, “Data-centric dynamic partial order reduction,” Proceedings of the ACM on Programming Languages, vol. 2, no. POPL. Association for Computing Machinery, 2017. ista: Chalupa M, Chatterjee K, Pavlogiannis A, Sinha N, Vaidya K. 2017. Data-centric dynamic partial order reduction. Proceedings of the ACM on Programming Languages. 2(POPL), 31. mla: Chalupa, Marek, et al. “Data-Centric Dynamic Partial Order Reduction.” Proceedings of the ACM on Programming Languages, vol. 2, no. POPL, 31, Association for Computing Machinery, 2017, doi:10.1145/3158119. short: M. Chalupa, K. Chatterjee, A. Pavlogiannis, N. Sinha, K. Vaidya, Proceedings of the ACM on Programming Languages 2 (2017). conference: end_date: 2018-01-13 location: Los Angeles, CA, United States name: 'POPL: Programming Languages' start_date: 2018-01-07 date_created: 2021-12-05T23:01:49Z date_published: 2017-12-27T00:00:00Z date_updated: 2023-02-23T12:27:16Z day: '27' department: - _id: KrCh doi: 10.1145/3158119 ec_funded: 1 external_id: arxiv: - '1610.01188' intvolume: ' 2' issue: POPL language: - iso: eng main_file_link: - open_access: '1' url: https://dl.acm.org/doi/10.1145/3158119 month: '12' oa: 1 oa_version: Published Version project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: Proceedings of the ACM on Programming Languages publication_identifier: eissn: - 2475-1421 publication_status: published publisher: Association for Computing Machinery quality_controlled: '1' related_material: record: - id: '5448' relation: earlier_version status: public - id: '5456' relation: earlier_version status: public scopus_import: '1' status: public title: Data-centric dynamic partial order reduction type: journal_article user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9 volume: 2 year: '2017' ... --- _id: '5456' abstract: - lang: eng text: "We present a new dynamic partial-order reduction method for stateless model checking of concurrent programs. A common approach for exploring program behaviors relies on enumerating the traces of the program, without storing the visited states (aka stateless exploration). As the number of distinct traces grows exponentially, dynamic partial-order reduction (DPOR) techniques have been successfully used to partition the space of traces into equivalence classes (Mazurkiewicz partitioning), with the goal of exploring only few representative traces from each class.\r\nWe introduce a new equivalence on traces under sequential consistency semantics, which we call the observation equivalence. Two traces are observationally equivalent if every read event observes the same write event in both traces. While the traditional Mazurkiewicz equivalence is control-centric, our new definition is data-centric. We show that our observation equivalence is coarser than the Mazurkiewicz equivalence, and in many cases even exponentially coarser. We devise a DPOR exploration of the trace space, called data-centric DPOR, based on the observation equivalence.\r\n1. For acyclic architectures, our algorithm is guaranteed to explore exactly one representative trace from each observation class, while spending polynomial time per class. Hence, our algorithm is optimal wrt the observation equivalence, and in several cases explores exponentially fewer traces than any enumerative method based on the Mazurkiewicz equivalence.\r\n2. For cyclic architectures, we consider an equivalence between traces which is finer than the observation equivalence; but coarser than the Mazurkiewicz equivalence, and in some cases is exponentially coarser. Our data-centric DPOR algorithm remains optimal under this trace equivalence. \r\nFinally, we perform a basic experimental comparison between the existing Mazurkiewicz-based DPOR and our data-centric DPOR on a set of academic benchmarks. Our results show a significant reduction in both running time and the number of explored equivalence classes." alternative_title: - IST Austria Technical Report author: - first_name: Marek full_name: Chalupa, Marek last_name: Chalupa - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 - first_name: Nishant full_name: Sinha, Nishant last_name: Sinha - first_name: Kapil full_name: Vaidya, Kapil last_name: Vaidya citation: ama: Chalupa M, Chatterjee K, Pavlogiannis A, Sinha N, Vaidya K. Data-Centric Dynamic Partial Order Reduction. IST Austria; 2017. doi:10.15479/AT:IST-2017-872-v1-1 apa: Chalupa, M., Chatterjee, K., Pavlogiannis, A., Sinha, N., & Vaidya, K. (2017). Data-centric dynamic partial order reduction. IST Austria. https://doi.org/10.15479/AT:IST-2017-872-v1-1 chicago: Chalupa, Marek, Krishnendu Chatterjee, Andreas Pavlogiannis, Nishant Sinha, and Kapil Vaidya. Data-Centric Dynamic Partial Order Reduction. IST Austria, 2017. https://doi.org/10.15479/AT:IST-2017-872-v1-1. ieee: M. Chalupa, K. Chatterjee, A. Pavlogiannis, N. Sinha, and K. Vaidya, Data-centric dynamic partial order reduction. IST Austria, 2017. ista: Chalupa M, Chatterjee K, Pavlogiannis A, Sinha N, Vaidya K. 2017. Data-centric dynamic partial order reduction, IST Austria, 36p. mla: Chalupa, Marek, et al. Data-Centric Dynamic Partial Order Reduction. IST Austria, 2017, doi:10.15479/AT:IST-2017-872-v1-1. short: M. Chalupa, K. Chatterjee, A. Pavlogiannis, N. Sinha, K. Vaidya, Data-Centric Dynamic Partial Order Reduction, IST Austria, 2017. date_created: 2018-12-12T11:39:26Z date_published: 2017-10-23T00:00:00Z date_updated: 2023-02-23T12:26:54Z day: '23' ddc: - '000' department: - _id: KrCh doi: 10.15479/AT:IST-2017-872-v1-1 file: - access_level: open_access checksum: d2635c4cf013000f0a1b09e80f9e4ab7 content_type: application/pdf creator: system date_created: 2018-12-12T11:53:26Z date_updated: 2020-07-14T12:46:59Z file_id: '5487' file_name: IST-2017-872-v1+1_main.pdf file_size: 910347 relation: main_file file_date_updated: 2020-07-14T12:46:59Z has_accepted_license: '1' language: - iso: eng month: '10' oa: 1 oa_version: Published Version page: '36' publication_identifier: issn: - 2664-1690 publication_status: published publisher: IST Austria pubrep_id: '872' related_material: record: - id: '10417' relation: later_version status: public - id: '5448' relation: earlier_version status: public status: public title: Data-centric dynamic partial order reduction type: technical_report user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2017' ... --- _id: '551' abstract: - lang: eng text: 'Evolutionary graph theory studies the evolutionary dynamics in a population structure given as a connected graph. Each node of the graph represents an individual of the population, and edges determine how offspring are placed. We consider the classical birth-death Moran process where there are two types of individuals, namely, the residents with fitness 1 and mutants with fitness r. The fitness indicates the reproductive strength. The evolutionary dynamics happens as follows: in the initial step, in a population of all resident individuals a mutant is introduced, and then at each step, an individual is chosen proportional to the fitness of its type to reproduce, and the offspring replaces a neighbor uniformly at random. The process stops when all individuals are either residents or mutants. The probability that all individuals in the end are mutants is called the fixation probability, which is a key factor in the rate of evolution. We consider the problem of approximating the fixation probability. The class of algorithms that is extremely relevant for approximation of the fixation probabilities is the Monte-Carlo simulation of the process. Previous results present a polynomial-time Monte-Carlo algorithm for undirected graphs when r is given in unary. First, we present a simple modification: instead of simulating each step, we discard ineffective steps, where no node changes type (i.e., either residents replace residents, or mutants replace mutants). Using the above simple modification and our result that the number of effective steps is concentrated around the expected number of effective steps, we present faster polynomial-time Monte-Carlo algorithms for undirected graphs. Our algorithms are always at least a factor O(n2/ log n) faster as compared to the previous algorithms, where n is the number of nodes, and is polynomial even if r is given in binary. We also present lower bounds showing that the upper bound on the expected number of effective steps we present is asymptotically tight for undirected graphs. ' alternative_title: - LIPIcs article_number: '61' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: 'Chatterjee K, Ibsen-Jensen R, Nowak M. Faster Monte Carlo algorithms for fixation probability of the Moran process on undirected graphs. In: Leibniz International Proceedings in Informatics. Vol 83. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2017. doi:10.4230/LIPIcs.MFCS.2017.61' apa: 'Chatterjee, K., Ibsen-Jensen, R., & Nowak, M. (2017). Faster Monte Carlo algorithms for fixation probability of the Moran process on undirected graphs. In Leibniz International Proceedings in Informatics (Vol. 83). Aalborg, Denmark: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.MFCS.2017.61' chicago: Chatterjee, Krishnendu, Rasmus Ibsen-Jensen, and Martin Nowak. “Faster Monte Carlo Algorithms for Fixation Probability of the Moran Process on Undirected Graphs.” In Leibniz International Proceedings in Informatics, Vol. 83. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. https://doi.org/10.4230/LIPIcs.MFCS.2017.61. ieee: K. Chatterjee, R. Ibsen-Jensen, and M. Nowak, “Faster Monte Carlo algorithms for fixation probability of the Moran process on undirected graphs,” in Leibniz International Proceedings in Informatics, Aalborg, Denmark, 2017, vol. 83. ista: 'Chatterjee K, Ibsen-Jensen R, Nowak M. 2017. Faster Monte Carlo algorithms for fixation probability of the Moran process on undirected graphs. Leibniz International Proceedings in Informatics. MFCS: Mathematical Foundations of Computer Science (SG), LIPIcs, vol. 83, 61.' mla: Chatterjee, Krishnendu, et al. “Faster Monte Carlo Algorithms for Fixation Probability of the Moran Process on Undirected Graphs.” Leibniz International Proceedings in Informatics, vol. 83, 61, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017, doi:10.4230/LIPIcs.MFCS.2017.61. short: K. Chatterjee, R. Ibsen-Jensen, M. Nowak, in:, Leibniz International Proceedings in Informatics, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. conference: end_date: 2017-08-25 location: Aalborg, Denmark name: 'MFCS: Mathematical Foundations of Computer Science (SG)' start_date: 2017-08-21 date_created: 2018-12-11T11:47:08Z date_published: 2017-11-01T00:00:00Z date_updated: 2021-01-12T08:02:34Z day: '01' ddc: - '004' department: - _id: KrCh doi: 10.4230/LIPIcs.MFCS.2017.61 file: - access_level: open_access checksum: 2eed5224c0e4e259484a1d71acb8ba6a content_type: application/pdf creator: system date_created: 2018-12-12T10:18:04Z date_updated: 2020-07-14T12:47:00Z file_id: '5322' file_name: IST-2018-924-v1+1_LIPIcs-MFCS-2017-61.pdf file_size: 535077 relation: main_file file_date_updated: 2020-07-14T12:47:00Z has_accepted_license: '1' intvolume: ' 83' language: - iso: eng month: '11' oa: 1 oa_version: Published Version publication: Leibniz International Proceedings in Informatics publication_identifier: isbn: - 978-395977046-0 publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik publist_id: '7263' pubrep_id: '924' quality_controlled: '1' scopus_import: 1 status: public title: Faster Monte Carlo algorithms for fixation probability of the Moran process on undirected graphs tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 83 year: '2017' ... --- _id: '552' abstract: - lang: eng text: 'Graph games provide the foundation for modeling and synthesis of reactive processes. Such games are played over graphs where the vertices are controlled by two adversarial players. We consider graph games where the objective of the first player is the conjunction of a qualitative objective (specified as a parity condition) and a quantitative objective (specified as a meanpayoff condition). There are two variants of the problem, namely, the threshold problem where the quantitative goal is to ensure that the mean-payoff value is above a threshold, and the value problem where the quantitative goal is to ensure the optimal mean-payoff value; in both cases ensuring the qualitative parity objective. The previous best-known algorithms for game graphs with n vertices, m edges, parity objectives with d priorities, and maximal absolute reward value W for mean-payoff objectives, are as follows: O(nd+1 . m . w) for the threshold problem, and O(nd+2 · m · W) for the value problem. Our main contributions are faster algorithms, and the running times of our algorithms are as follows: O(nd-1 · m ·W) for the threshold problem, and O(nd · m · W · log(n · W)) for the value problem. For mean-payoff parity objectives with two priorities, our algorithms match the best-known bounds of the algorithms for mean-payoff games (without conjunction with parity objectives). Our results are relevant in synthesis of reactive systems with both functional requirement (given as a qualitative objective) and performance requirement (given as a quantitative objective).' alternative_title: - LIPIcs article_number: '39' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Alexander full_name: Svozil, Alexander last_name: Svozil citation: ama: 'Chatterjee K, Henzinger MH, Svozil A. Faster algorithms for mean-payoff parity games. In: Leibniz International Proceedings in Informatics. Vol 83. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2017. doi:10.4230/LIPIcs.MFCS.2017.39' apa: 'Chatterjee, K., Henzinger, M. H., & Svozil, A. (2017). Faster algorithms for mean-payoff parity games. In Leibniz International Proceedings in Informatics (Vol. 83). Aalborg, Denmark: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.MFCS.2017.39' chicago: Chatterjee, Krishnendu, Monika H Henzinger, and Alexander Svozil. “Faster Algorithms for Mean-Payoff Parity Games.” In Leibniz International Proceedings in Informatics, Vol. 83. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. https://doi.org/10.4230/LIPIcs.MFCS.2017.39. ieee: K. Chatterjee, M. H. Henzinger, and A. Svozil, “Faster algorithms for mean-payoff parity games,” in Leibniz International Proceedings in Informatics, Aalborg, Denmark, 2017, vol. 83. ista: 'Chatterjee K, Henzinger MH, Svozil A. 2017. Faster algorithms for mean-payoff parity games. Leibniz International Proceedings in Informatics. MFCS: Mathematical Foundations of Computer Science (SG), LIPIcs, vol. 83, 39.' mla: Chatterjee, Krishnendu, et al. “Faster Algorithms for Mean-Payoff Parity Games.” Leibniz International Proceedings in Informatics, vol. 83, 39, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017, doi:10.4230/LIPIcs.MFCS.2017.39. short: K. Chatterjee, M.H. Henzinger, A. Svozil, in:, Leibniz International Proceedings in Informatics, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. conference: end_date: 2017-08-25 location: Aalborg, Denmark name: 'MFCS: Mathematical Foundations of Computer Science (SG)' start_date: 2017-08-21 date_created: 2018-12-11T11:47:08Z date_published: 2017-11-01T00:00:00Z date_updated: 2023-02-14T10:06:46Z day: '01' ddc: - '004' department: - _id: KrCh doi: 10.4230/LIPIcs.MFCS.2017.39 ec_funded: 1 file: - access_level: open_access checksum: c67f4866ddbfd555afef1f63ae9a8fc7 content_type: application/pdf creator: system date_created: 2018-12-12T10:16:57Z date_updated: 2020-07-14T12:47:00Z file_id: '5248' file_name: IST-2018-923-v1+1_LIPIcs-MFCS-2017-39.pdf file_size: 610339 relation: main_file file_date_updated: 2020-07-14T12:47:00Z has_accepted_license: '1' intvolume: ' 83' language: - iso: eng license: https://creativecommons.org/licenses/by/3.0/ month: '11' oa: 1 oa_version: Published Version project: - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: Leibniz International Proceedings in Informatics publication_identifier: isbn: - 978-395977046-0 publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik publist_id: '7262' pubrep_id: '923' quality_controlled: '1' scopus_import: '1' status: public title: Faster algorithms for mean-payoff parity games tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/3.0/legalcode name: Creative Commons Attribution 3.0 Unported (CC BY 3.0) short: CC BY (3.0) type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 83 year: '2017' ... --- _id: '553' abstract: - lang: eng text: 'We consider two player, zero-sum, finite-state concurrent reachability games, played for an infinite number of rounds, where in every round, each player simultaneously and independently of the other players chooses an action, whereafter the successor state is determined by a probability distribution given by the current state and the chosen actions. Player 1 wins iff a designated goal state is eventually visited. We are interested in the complexity of stationary strategies measured by their patience, which is defined as the inverse of the smallest non-zero probability employed. Our main results are as follows: We show that: (i) the optimal bound on the patience of optimal and -optimal strategies, for both players is doubly exponential; and (ii) even in games with a single non-absorbing state exponential (in the number of actions) patience is necessary. ' alternative_title: - LIPIcs article_number: '55' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Kristofer full_name: Hansen, Kristofer last_name: Hansen - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 citation: ama: 'Chatterjee K, Hansen K, Ibsen-Jensen R. Strategy complexity of concurrent safety games. In: Leibniz International Proceedings in Informatics. Vol 83. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2017. doi:10.4230/LIPIcs.MFCS.2017.55' apa: 'Chatterjee, K., Hansen, K., & Ibsen-Jensen, R. (2017). Strategy complexity of concurrent safety games. In Leibniz International Proceedings in Informatics (Vol. 83). Aalborg, Denmark: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.MFCS.2017.55' chicago: Chatterjee, Krishnendu, Kristofer Hansen, and Rasmus Ibsen-Jensen. “Strategy Complexity of Concurrent Safety Games.” In Leibniz International Proceedings in Informatics, Vol. 83. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. https://doi.org/10.4230/LIPIcs.MFCS.2017.55. ieee: K. Chatterjee, K. Hansen, and R. Ibsen-Jensen, “Strategy complexity of concurrent safety games,” in Leibniz International Proceedings in Informatics, Aalborg, Denmark, 2017, vol. 83. ista: 'Chatterjee K, Hansen K, Ibsen-Jensen R. 2017. Strategy complexity of concurrent safety games. Leibniz International Proceedings in Informatics. MFCS: Mathematical Foundations of Computer Science (SG), LIPIcs, vol. 83, 55.' mla: Chatterjee, Krishnendu, et al. “Strategy Complexity of Concurrent Safety Games.” Leibniz International Proceedings in Informatics, vol. 83, 55, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017, doi:10.4230/LIPIcs.MFCS.2017.55. short: K. Chatterjee, K. Hansen, R. Ibsen-Jensen, in:, Leibniz International Proceedings in Informatics, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. conference: end_date: 2017-08-25 location: Aalborg, Denmark name: 'MFCS: Mathematical Foundations of Computer Science (SG)' start_date: 2017-08-21 date_created: 2018-12-11T11:47:08Z date_published: 2017-11-01T00:00:00Z date_updated: 2021-01-12T08:02:35Z day: '01' ddc: - '004' department: - _id: KrCh doi: 10.4230/LIPIcs.MFCS.2017.55 file: - access_level: open_access checksum: 7101facb56ade363205c695d72dbd173 content_type: application/pdf creator: system date_created: 2018-12-12T10:09:29Z date_updated: 2020-07-14T12:47:00Z file_id: '4753' file_name: IST-2018-922-v1+1_LIPIcs-MFCS-2017-55.pdf file_size: 549967 relation: main_file file_date_updated: 2020-07-14T12:47:00Z has_accepted_license: '1' intvolume: ' 83' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1506.02434 month: '11' oa: 1 oa_version: Published Version publication: Leibniz International Proceedings in Informatics publication_identifier: isbn: - 978-395977046-0 publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik publist_id: '7261' pubrep_id: '922' quality_controlled: '1' scopus_import: 1 status: public title: Strategy complexity of concurrent safety games tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 83 year: '2017' ... --- _id: '625' abstract: - lang: eng text: In the analysis of reactive systems a quantitative objective assigns a real value to every trace of the system. The value decision problem for a quantitative objective requires a trace whose value is at least a given threshold, and the exact value decision problem requires a trace whose value is exactly the threshold. We compare the computational complexity of the value and exact value decision problems for classical quantitative objectives, such as sum, discounted sum, energy, and mean-payoff for two standard models of reactive systems, namely, graphs and graph games. acknowledgement: 'This research was supported in part by the Austrian Science Fund (FWF) under grants S11402-N23 and S11407-N23 (RiSE/SHiNE), and Z211-N23 (Wittgenstein Award), ERC Start grant (279307: Graph Games), Vienna Science and Technology Fund (WWTF) through project ICT15-003.' alternative_title: - LNCS article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Laurent full_name: Doyen, Laurent last_name: Doyen - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 citation: ama: 'Chatterjee K, Doyen L, Henzinger TA. The cost of exactness in quantitative reachability. In: Aceto L, Bacci G, Ingólfsdóttir A, Legay A, Mardare R, eds. Models, Algorithms, Logics and Tools. Vol 10460. Theoretical Computer Science and General Issues. Springer; 2017:367-381. doi:10.1007/978-3-319-63121-9_18' apa: Chatterjee, K., Doyen, L., & Henzinger, T. A. (2017). The cost of exactness in quantitative reachability. In L. Aceto, G. Bacci, A. Ingólfsdóttir, A. Legay, & R. Mardare (Eds.), Models, Algorithms, Logics and Tools (Vol. 10460, pp. 367–381). Springer. https://doi.org/10.1007/978-3-319-63121-9_18 chicago: Chatterjee, Krishnendu, Laurent Doyen, and Thomas A Henzinger. “The Cost of Exactness in Quantitative Reachability.” In Models, Algorithms, Logics and Tools, edited by Luca Aceto, Giorgio Bacci, Anna Ingólfsdóttir, Axel Legay, and Radu Mardare, 10460:367–81. Theoretical Computer Science and General Issues. Springer, 2017. https://doi.org/10.1007/978-3-319-63121-9_18. ieee: K. Chatterjee, L. Doyen, and T. A. Henzinger, “The cost of exactness in quantitative reachability,” in Models, Algorithms, Logics and Tools, vol. 10460, L. Aceto, G. Bacci, A. Ingólfsdóttir, A. Legay, and R. Mardare, Eds. Springer, 2017, pp. 367–381. ista: 'Chatterjee K, Doyen L, Henzinger TA. 2017.The cost of exactness in quantitative reachability. In: Models, Algorithms, Logics and Tools. LNCS, vol. 10460, 367–381.' mla: Chatterjee, Krishnendu, et al. “The Cost of Exactness in Quantitative Reachability.” Models, Algorithms, Logics and Tools, edited by Luca Aceto et al., vol. 10460, Springer, 2017, pp. 367–81, doi:10.1007/978-3-319-63121-9_18. short: K. Chatterjee, L. Doyen, T.A. Henzinger, in:, L. Aceto, G. Bacci, A. Ingólfsdóttir, A. Legay, R. Mardare (Eds.), Models, Algorithms, Logics and Tools, Springer, 2017, pp. 367–381. date_created: 2018-12-11T11:47:34Z date_published: 2017-07-25T00:00:00Z date_updated: 2022-05-23T08:54:02Z day: '25' ddc: - '000' department: - _id: KrCh - _id: ToHe doi: 10.1007/978-3-319-63121-9_18 ec_funded: 1 editor: - first_name: Luca full_name: Aceto, Luca last_name: Aceto - first_name: Giorgio full_name: Bacci, Giorgio last_name: Bacci - first_name: Anna full_name: Ingólfsdóttir, Anna last_name: Ingólfsdóttir - first_name: Axel full_name: Legay, Axel last_name: Legay - first_name: Radu full_name: Mardare, Radu last_name: Mardare file: - access_level: open_access checksum: b2402766ec02c79801aac634bd8f9f6c content_type: application/pdf creator: dernst date_created: 2019-11-19T08:06:50Z date_updated: 2020-07-14T12:47:25Z file_id: '7048' file_name: 2017_ModelsAlgorithms_Chatterjee.pdf file_size: 192826 relation: main_file file_date_updated: 2020-07-14T12:47:25Z has_accepted_license: '1' intvolume: ' 10460' language: - iso: eng month: '07' oa: 1 oa_version: Submitted Version page: 367 - 381 project: - _id: 25F5A88A-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11402-N23 name: Moderne Concurrency Paradigms - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: The Wittgenstein Prize - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication: Models, Algorithms, Logics and Tools publication_identifier: isbn: - 978-3-319-63120-2 issn: - 0302-9743 publication_status: published publisher: Springer publist_id: '7170' quality_controlled: '1' scopus_import: '1' series_title: Theoretical Computer Science and General Issues status: public title: The cost of exactness in quantitative reachability type: book_chapter user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 10460 year: '2017' ... --- _id: '628' abstract: - lang: eng text: We consider the problem of developing automated techniques for solving recurrence relations to aid the expected-runtime analysis of programs. The motivation is that several classical textbook algorithms have quite efficient expected-runtime complexity, whereas the corresponding worst-case bounds are either inefficient (e.g., Quick-Sort), or completely ineffective (e.g., Coupon-Collector). Since the main focus of expected-runtime analysis is to obtain efficient bounds, we consider bounds that are either logarithmic, linear or almost-linear (O(log n), O(n), O(n · log n), respectively, where n represents the input size). Our main contribution is an efficient (simple linear-time algorithm) sound approach for deriving such expected-runtime bounds for the analysis of recurrence relations induced by randomized algorithms. The experimental results show that our approach can efficiently derive asymptotically optimal expected-runtime bounds for recurrences of classical randomized algorithms, including Randomized-Search, Quick-Sort, Quick-Select, Coupon-Collector, where the worst-case bounds are either inefficient (such as linear as compared to logarithmic expected-runtime complexity, or quadratic as compared to linear or almost-linear expected-runtime complexity), or ineffective. alternative_title: - LNCS author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Hongfei full_name: Fu, Hongfei last_name: Fu - first_name: Aniket full_name: Murhekar, Aniket last_name: Murhekar citation: ama: 'Chatterjee K, Fu H, Murhekar A. Automated recurrence analysis for almost linear expected runtime bounds. In: Majumdar R, Kunčak V, eds. Vol 10426. Springer; 2017:118-139. doi:10.1007/978-3-319-63387-9_6' apa: 'Chatterjee, K., Fu, H., & Murhekar, A. (2017). Automated recurrence analysis for almost linear expected runtime bounds. In R. Majumdar & V. Kunčak (Eds.) (Vol. 10426, pp. 118–139). Presented at the CAV: Computer Aided Verification, Heidelberg, Germany: Springer. https://doi.org/10.1007/978-3-319-63387-9_6' chicago: Chatterjee, Krishnendu, Hongfei Fu, and Aniket Murhekar. “Automated Recurrence Analysis for Almost Linear Expected Runtime Bounds.” edited by Rupak Majumdar and Viktor Kunčak, 10426:118–39. Springer, 2017. https://doi.org/10.1007/978-3-319-63387-9_6. ieee: 'K. Chatterjee, H. Fu, and A. Murhekar, “Automated recurrence analysis for almost linear expected runtime bounds,” presented at the CAV: Computer Aided Verification, Heidelberg, Germany, 2017, vol. 10426, pp. 118–139.' ista: 'Chatterjee K, Fu H, Murhekar A. 2017. Automated recurrence analysis for almost linear expected runtime bounds. CAV: Computer Aided Verification, LNCS, vol. 10426, 118–139.' mla: Chatterjee, Krishnendu, et al. Automated Recurrence Analysis for Almost Linear Expected Runtime Bounds. Edited by Rupak Majumdar and Viktor Kunčak, vol. 10426, Springer, 2017, pp. 118–39, doi:10.1007/978-3-319-63387-9_6. short: K. Chatterjee, H. Fu, A. Murhekar, in:, R. Majumdar, V. Kunčak (Eds.), Springer, 2017, pp. 118–139. conference: end_date: 2017-07-28 location: Heidelberg, Germany name: 'CAV: Computer Aided Verification' start_date: 2017-07-24 date_created: 2018-12-11T11:47:35Z date_published: 2017-01-01T00:00:00Z date_updated: 2021-01-12T08:06:55Z day: '01' department: - _id: KrCh doi: 10.1007/978-3-319-63387-9_6 ec_funded: 1 editor: - first_name: Rupak full_name: Majumdar, Rupak last_name: Majumdar - first_name: Viktor full_name: Kunčak, Viktor last_name: Kunčak intvolume: ' 10426' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1705.00314 month: '01' oa: 1 oa_version: Submitted Version page: 118 - 139 project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication_identifier: isbn: - 978-331963386-2 publication_status: published publisher: Springer publist_id: '7166' quality_controlled: '1' scopus_import: 1 status: public title: Automated recurrence analysis for almost linear expected runtime bounds type: conference user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87 volume: 10426 year: '2017' ... --- _id: '645' abstract: - lang: eng text: Markov decision processes (MDPs) are standard models for probabilistic systems with non-deterministic behaviours. Long-run average rewards provide a mathematically elegant formalism for expressing long term performance. Value iteration (VI) is one of the simplest and most efficient algorithmic approaches to MDPs with other properties, such as reachability objectives. Unfortunately, a naive extension of VI does not work for MDPs with long-run average rewards, as there is no known stopping criterion. In this work our contributions are threefold. (1) We refute a conjecture related to stopping criteria for MDPs with long-run average rewards. (2) We present two practical algorithms for MDPs with long-run average rewards based on VI. First, we show that a combination of applying VI locally for each maximal end-component (MEC) and VI for reachability objectives can provide approximation guarantees. Second, extending the above approach with a simulation-guided on-demand variant of VI, we present an anytime algorithm that is able to deal with very large models. (3) Finally, we present experimental results showing that our methods significantly outperform the standard approaches on several benchmarks. alternative_title: - LNCS author: - first_name: Pranav full_name: Ashok, Pranav last_name: Ashok - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Przemyslaw full_name: Daca, Przemyslaw id: 49351290-F248-11E8-B48F-1D18A9856A87 last_name: Daca - first_name: Jan full_name: Kretinsky, Jan id: 44CEF464-F248-11E8-B48F-1D18A9856A87 last_name: Kretinsky orcid: 0000-0002-8122-2881 - first_name: Tobias full_name: Meggendorfer, Tobias last_name: Meggendorfer citation: ama: 'Ashok P, Chatterjee K, Daca P, Kretinsky J, Meggendorfer T. Value iteration for long run average reward in markov decision processes. In: Majumdar R, Kunčak V, eds. Vol 10426. Springer; 2017:201-221. doi:10.1007/978-3-319-63387-9_10' apa: 'Ashok, P., Chatterjee, K., Daca, P., Kretinsky, J., & Meggendorfer, T. (2017). Value iteration for long run average reward in markov decision processes. In R. Majumdar & V. Kunčak (Eds.) (Vol. 10426, pp. 201–221). Presented at the CAV: Computer Aided Verification, Heidelberg, Germany: Springer. https://doi.org/10.1007/978-3-319-63387-9_10' chicago: Ashok, Pranav, Krishnendu Chatterjee, Przemyslaw Daca, Jan Kretinsky, and Tobias Meggendorfer. “Value Iteration for Long Run Average Reward in Markov Decision Processes.” edited by Rupak Majumdar and Viktor Kunčak, 10426:201–21. Springer, 2017. https://doi.org/10.1007/978-3-319-63387-9_10. ieee: 'P. Ashok, K. Chatterjee, P. Daca, J. Kretinsky, and T. Meggendorfer, “Value iteration for long run average reward in markov decision processes,” presented at the CAV: Computer Aided Verification, Heidelberg, Germany, 2017, vol. 10426, pp. 201–221.' ista: 'Ashok P, Chatterjee K, Daca P, Kretinsky J, Meggendorfer T. 2017. Value iteration for long run average reward in markov decision processes. CAV: Computer Aided Verification, LNCS, vol. 10426, 201–221.' mla: Ashok, Pranav, et al. Value Iteration for Long Run Average Reward in Markov Decision Processes. Edited by Rupak Majumdar and Viktor Kunčak, vol. 10426, Springer, 2017, pp. 201–21, doi:10.1007/978-3-319-63387-9_10. short: P. Ashok, K. Chatterjee, P. Daca, J. Kretinsky, T. Meggendorfer, in:, R. Majumdar, V. Kunčak (Eds.), Springer, 2017, pp. 201–221. conference: end_date: 2017-07-28 location: Heidelberg, Germany name: 'CAV: Computer Aided Verification' start_date: 2017-07-24 date_created: 2018-12-11T11:47:41Z date_published: 2017-07-13T00:00:00Z date_updated: 2021-01-12T08:07:32Z day: '13' department: - _id: KrCh doi: 10.1007/978-3-319-63387-9_10 ec_funded: 1 editor: - first_name: Rupak full_name: Majumdar, Rupak last_name: Majumdar - first_name: Viktor full_name: Kunčak, Viktor last_name: Kunčak intvolume: ' 10426' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1705.02326 month: '07' oa: 1 oa_version: Submitted Version page: 201 - 221 project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication_identifier: isbn: - 978-331963386-2 publication_status: published publisher: Springer publist_id: '7135' quality_controlled: '1' scopus_import: 1 status: public title: Value iteration for long run average reward in markov decision processes type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 10426 year: '2017' ... --- _id: '6519' abstract: - lang: eng text: 'Graph games with omega-regular winning conditions provide a mathematical framework to analyze a wide range of problems in the analysis of reactive systems and programs (such as the synthesis of reactive systems, program repair, and the verification of branching time properties). Parity conditions are canonical forms to specify omega-regular winning conditions. Graph games with parity conditions are equivalent to mu-calculus model checking, and thus a very important algorithmic problem. Symbolic algorithms are of great significance because they provide scalable algorithms for the analysis of large finite-state systems, as well as algorithms for the analysis of infinite-state systems with finite quotient. A set-based symbolic algorithm uses the basic set operations and the one-step predecessor operators. We consider graph games with n vertices and parity conditions with c priorities (equivalently, a mu-calculus formula with c alternations of least and greatest fixed points). While many explicit algorithms exist for graph games with parity conditions, for set-based symbolic algorithms there are only two algorithms (notice that we use space to refer to the number of sets stored by a symbolic algorithm): (a) the basic algorithm that requires O(n^c) symbolic operations and linear space; and (b) an improved algorithm that requires O(n^{c/2+1}) symbolic operations but also O(n^{c/2+1}) space (i.e., exponential space). In this work we present two set-based symbolic algorithms for parity games: (a) our first algorithm requires O(n^{c/2+1}) symbolic operations and only requires linear space; and (b) developing on our first algorithm, we present an algorithm that requires O(n^{c/3+1}) symbolic operations and only linear space. We also present the first linear space set-based symbolic algorithm for parity games that requires at most a sub-exponential number of symbolic operations. ' article_number: '18' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Wolfgang full_name: Dvorák, Wolfgang last_name: Dvorák - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Veronika full_name: Loitzenbauer, Veronika last_name: Loitzenbauer citation: ama: 'Chatterjee K, Dvorák W, Henzinger MH, Loitzenbauer V. Improved set-based symbolic algorithms for parity games. In: Vol 82. Schloss Dagstuhl -Leibniz-Zentrum fuer Informatik; 2017. doi:10.4230/LIPICS.CSL.2017.18' apa: 'Chatterjee, K., Dvorák, W., Henzinger, M. H., & Loitzenbauer, V. (2017). Improved set-based symbolic algorithms for parity games (Vol. 82). Presented at the CSL: Conference on Computer Science Logic, Stockholm, Sweden: Schloss Dagstuhl -Leibniz-Zentrum fuer Informatik. https://doi.org/10.4230/LIPICS.CSL.2017.18' chicago: Chatterjee, Krishnendu, Wolfgang Dvorák, Monika H Henzinger, and Veronika Loitzenbauer. “Improved Set-Based Symbolic Algorithms for Parity Games,” Vol. 82. Schloss Dagstuhl -Leibniz-Zentrum fuer Informatik, 2017. https://doi.org/10.4230/LIPICS.CSL.2017.18. ieee: 'K. Chatterjee, W. Dvorák, M. H. Henzinger, and V. Loitzenbauer, “Improved set-based symbolic algorithms for parity games,” presented at the CSL: Conference on Computer Science Logic, Stockholm, Sweden, 2017, vol. 82.' ista: 'Chatterjee K, Dvorák W, Henzinger MH, Loitzenbauer V. 2017. Improved set-based symbolic algorithms for parity games. CSL: Conference on Computer Science Logic vol. 82, 18.' mla: Chatterjee, Krishnendu, et al. Improved Set-Based Symbolic Algorithms for Parity Games. Vol. 82, 18, Schloss Dagstuhl -Leibniz-Zentrum fuer Informatik, 2017, doi:10.4230/LIPICS.CSL.2017.18. short: K. Chatterjee, W. Dvorák, M.H. Henzinger, V. Loitzenbauer, in:, Schloss Dagstuhl -Leibniz-Zentrum fuer Informatik, 2017. conference: end_date: 2017-08-24 location: Stockholm, Sweden name: 'CSL: Conference on Computer Science Logic' start_date: 2017-08-20 date_created: 2019-06-04T12:42:43Z date_published: 2017-08-01T00:00:00Z date_updated: 2023-02-14T10:08:25Z day: '01' ddc: - '004' department: - _id: KrCh doi: 10.4230/LIPICS.CSL.2017.18 ec_funded: 1 file: - access_level: open_access checksum: 7c2c9d09970af79026d7e37d9b632ef8 content_type: application/pdf creator: kschuh date_created: 2019-06-04T12:56:52Z date_updated: 2020-07-14T12:47:33Z file_id: '6520' file_name: 2017_LIPIcs-Chatterjee.pdf file_size: 710185 relation: main_file file_date_updated: 2020-07-14T12:47:33Z has_accepted_license: '1' intvolume: ' 82' language: - iso: eng month: '08' oa: 1 oa_version: Published Version project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication_status: published publisher: Schloss Dagstuhl -Leibniz-Zentrum fuer Informatik quality_controlled: '1' scopus_import: '1' status: public title: Improved set-based symbolic algorithms for parity games tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/3.0/legalcode name: Creative Commons Attribution 3.0 Unported (CC BY 3.0) short: CC BY (3.0) type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 82 year: '2017' ... --- _id: '653' abstract: - lang: eng text: The extent of heterogeneity among driver gene mutations present in naturally occurring metastases - that is, treatment-naive metastatic disease - is largely unknown. To address this issue, we carried out 60× whole-genome sequencing of 26 metastases from four patients with pancreatic cancer. We found that identical mutations in known driver genes were present in every metastatic lesion for each patient studied. Passenger gene mutations, which do not have known or predicted functional consequences, accounted for all intratumoral heterogeneity. Even with respect to these passenger mutations, our analysis suggests that the genetic similarity among the founding cells of metastases was higher than that expected for any two cells randomly taken from a normal tissue. The uniformity of known driver gene mutations among metastases in the same patient has critical and encouraging implications for the success of future targeted therapies in advanced-stage disease. acknowledgement: 'We thank the Memorial Sloan Kettering Cancer Center Molecular Cytology core facility for immunohistochemistry staining. This work was supported by Office of Naval Research grant N00014-16-1-2914, the Bill and Melinda Gates Foundation (OPP1148627), and a gift from B. Wu and E. Larson (M.A.N.), National Institutes of Health grants CA179991 (C.A.I.-D. and I.B.), F31 CA180682 (A.P.M.-M.), CA43460 (B.V.), and P50 CA62924, the Monastra Foundation, the Virginia and D.K. Ludwig Fund for Cancer Research, the Lustgarten Foundation for Pancreatic Cancer Research, the Sol Goldman Center for Pancreatic Cancer Research, the Sol Goldman Sequencing Center, ERC Start grant 279307: Graph Games (J.G.R., D.K., and C.K.), Austrian Science Fund (FWF) grant P23499-N23 (J.G.R., D.K., and C.K.), and FWF NFN grant S11407-N23 RiSE/SHiNE (J.G.R., D.K., and C.K.).' article_processing_charge: No article_type: original author: - first_name: Alvin full_name: Makohon Moore, Alvin last_name: Makohon Moore - first_name: Ming full_name: Zhang, Ming last_name: Zhang - first_name: Johannes full_name: Reiter, Johannes id: 4A918E98-F248-11E8-B48F-1D18A9856A87 last_name: Reiter orcid: 0000-0002-0170-7353 - first_name: Ivana full_name: Božić, Ivana last_name: Božić - first_name: Benjamin full_name: Allen, Benjamin last_name: Allen - first_name: Deepanjan full_name: Kundu, Deepanjan id: 1d4c0f4f-e8a3-11ec-a351-e36772758c45 last_name: Kundu - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Fay full_name: Wong, Fay last_name: Wong - first_name: Yuchen full_name: Jiao, Yuchen last_name: Jiao - first_name: Zachary full_name: Kohutek, Zachary last_name: Kohutek - first_name: Jungeui full_name: Hong, Jungeui last_name: Hong - first_name: Marc full_name: Attiyeh, Marc last_name: Attiyeh - first_name: Breanna full_name: Javier, Breanna last_name: Javier - first_name: Laura full_name: Wood, Laura last_name: Wood - first_name: Ralph full_name: Hruban, Ralph last_name: Hruban - first_name: Martin full_name: Nowak, Martin last_name: Nowak - first_name: Nickolas full_name: Papadopoulos, Nickolas last_name: Papadopoulos - first_name: Kenneth full_name: Kinzler, Kenneth last_name: Kinzler - first_name: Bert full_name: Vogelstein, Bert last_name: Vogelstein - first_name: Christine full_name: Iacobuzio Donahue, Christine last_name: Iacobuzio Donahue citation: ama: Makohon Moore A, Zhang M, Reiter J, et al. Limited heterogeneity of known driver gene mutations among the metastases of individual patients with pancreatic cancer. Nature Genetics. 2017;49(3):358-366. doi:10.1038/ng.3764 apa: Makohon Moore, A., Zhang, M., Reiter, J., Božić, I., Allen, B., Kundu, D., … Iacobuzio Donahue, C. (2017). Limited heterogeneity of known driver gene mutations among the metastases of individual patients with pancreatic cancer. Nature Genetics. Nature Publishing Group. https://doi.org/10.1038/ng.3764 chicago: Makohon Moore, Alvin, Ming Zhang, Johannes Reiter, Ivana Božić, Benjamin Allen, Deepanjan Kundu, Krishnendu Chatterjee, et al. “Limited Heterogeneity of Known Driver Gene Mutations among the Metastases of Individual Patients with Pancreatic Cancer.” Nature Genetics. Nature Publishing Group, 2017. https://doi.org/10.1038/ng.3764. ieee: A. Makohon Moore et al., “Limited heterogeneity of known driver gene mutations among the metastases of individual patients with pancreatic cancer,” Nature Genetics, vol. 49, no. 3. Nature Publishing Group, pp. 358–366, 2017. ista: Makohon Moore A, Zhang M, Reiter J, Božić I, Allen B, Kundu D, Chatterjee K, Wong F, Jiao Y, Kohutek Z, Hong J, Attiyeh M, Javier B, Wood L, Hruban R, Nowak M, Papadopoulos N, Kinzler K, Vogelstein B, Iacobuzio Donahue C. 2017. Limited heterogeneity of known driver gene mutations among the metastases of individual patients with pancreatic cancer. Nature Genetics. 49(3), 358–366. mla: Makohon Moore, Alvin, et al. “Limited Heterogeneity of Known Driver Gene Mutations among the Metastases of Individual Patients with Pancreatic Cancer.” Nature Genetics, vol. 49, no. 3, Nature Publishing Group, 2017, pp. 358–66, doi:10.1038/ng.3764. short: A. Makohon Moore, M. Zhang, J. Reiter, I. Božić, B. Allen, D. Kundu, K. Chatterjee, F. Wong, Y. Jiao, Z. Kohutek, J. Hong, M. Attiyeh, B. Javier, L. Wood, R. Hruban, M. Nowak, N. Papadopoulos, K. Kinzler, B. Vogelstein, C. Iacobuzio Donahue, Nature Genetics 49 (2017) 358–366. date_created: 2018-12-11T11:47:43Z date_published: 2017-03-01T00:00:00Z date_updated: 2022-06-10T09:55:08Z day: '01' ddc: - '000' department: - _id: KrCh doi: 10.1038/ng.3764 ec_funded: 1 external_id: pmid: - '28092682' file: - access_level: open_access checksum: e442dc3b7420a36ec805e9bb45cc1a2e content_type: application/pdf creator: dernst date_created: 2019-11-19T08:13:50Z date_updated: 2020-07-14T12:47:33Z file_id: '7050' file_name: 2017_NatureGenetics_Makohon.pdf file_size: 908099 relation: main_file file_date_updated: 2020-07-14T12:47:33Z has_accepted_license: '1' intvolume: ' 49' issue: '3' language: - iso: eng month: '03' oa: 1 oa_version: Submitted Version page: 358 - 366 pmid: 1 project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory publication: Nature Genetics publication_identifier: issn: - '10614036' publication_status: published publisher: Nature Publishing Group publist_id: '7092' quality_controlled: '1' scopus_import: '1' status: public title: Limited heterogeneity of known driver gene mutations among the metastases of individual patients with pancreatic cancer type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 49 year: '2017' ... --- _id: '671' abstract: - lang: eng text: Humans routinely use conditionally cooperative strategies when interacting in repeated social dilemmas. They are more likely to cooperate if others cooperated before, and are ready to retaliate if others defected. To capture the emergence of reciprocity, most previous models consider subjects who can only choose from a restricted set of representative strategies, or who react to the outcome of the very last round only. As players memorize more rounds, the dimension of the strategy space increases exponentially. This increasing computational complexity renders simulations for individuals with higher cognitive abilities infeasible, especially if multiplayer interactions are taken into account. Here, we take an axiomatic approach instead. We propose several properties that a robust cooperative strategy for a repeated multiplayer dilemma should have. These properties naturally lead to a unique class of cooperative strategies, which contains the classical Win-Stay Lose-Shift rule as a special case. A comprehensive numerical analysis for the prisoner's dilemma and for the public goods game suggests that strategies of this class readily evolve across various memory-n spaces. Our results reveal that successful strategies depend not only on how cooperative others were in the past but also on the respective context of cooperation. article_processing_charge: Yes (in subscription journal) author: - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X - first_name: Vaquero full_name: Martinez, Vaquero last_name: Martinez - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: Hilbe C, Martinez V, Chatterjee K, Nowak M. Memory-n strategies of direct reciprocity. PNAS. 2017;114(18):4715-4720. doi:10.1073/pnas.1621239114 apa: Hilbe, C., Martinez, V., Chatterjee, K., & Nowak, M. (2017). Memory-n strategies of direct reciprocity. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1621239114 chicago: Hilbe, Christian, Vaquero Martinez, Krishnendu Chatterjee, and Martin Nowak. “Memory-n Strategies of Direct Reciprocity.” PNAS. National Academy of Sciences, 2017. https://doi.org/10.1073/pnas.1621239114. ieee: C. Hilbe, V. Martinez, K. Chatterjee, and M. Nowak, “Memory-n strategies of direct reciprocity,” PNAS, vol. 114, no. 18. National Academy of Sciences, pp. 4715–4720, 2017. ista: Hilbe C, Martinez V, Chatterjee K, Nowak M. 2017. Memory-n strategies of direct reciprocity. PNAS. 114(18), 4715–4720. mla: Hilbe, Christian, et al. “Memory-n Strategies of Direct Reciprocity.” PNAS, vol. 114, no. 18, National Academy of Sciences, 2017, pp. 4715–20, doi:10.1073/pnas.1621239114. short: C. Hilbe, V. Martinez, K. Chatterjee, M. Nowak, PNAS 114 (2017) 4715–4720. date_created: 2018-12-11T11:47:50Z date_published: 2017-05-02T00:00:00Z date_updated: 2021-01-12T08:08:37Z day: '02' department: - _id: KrCh doi: 10.1073/pnas.1621239114 ec_funded: 1 external_id: pmid: - '28420786' intvolume: ' 114' issue: '18' language: - iso: eng main_file_link: - open_access: '1' url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5422766/ month: '05' oa: 1 oa_version: Published Version page: 4715 - 4720 pmid: 1 project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory publication: PNAS publication_identifier: issn: - '00278424' publication_status: published publisher: National Academy of Sciences publist_id: '7053' quality_controlled: '1' scopus_import: 1 status: public title: Memory-n strategies of direct reciprocity type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 114 year: '2017' ... --- _id: '681' abstract: - lang: eng text: Two-player games on graphs provide the theoretical framework for many important problems such as reactive synthesis. While the traditional study of two-player zero-sum games has been extended to multi-player games with several notions of equilibria, they are decidable only for perfect-information games, whereas several applications require imperfect-information. In this paper we propose a new notion of equilibria, called doomsday equilibria, which is a strategy profile where all players satisfy their own objective, and if any coalition of players deviates and violates even one of the players' objective, then the objective of every player is violated. We present algorithms and complexity results for deciding the existence of doomsday equilibria for various classes of ω-regular objectives, both for imperfect-information games, and for perfect-information games. We provide optimal complexity bounds for imperfect-information games, and in most cases for perfect-information games. article_processing_charge: No article_type: original author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Laurent full_name: Doyen, Laurent last_name: Doyen - first_name: Emmanuel full_name: Filiot, Emmanuel last_name: Filiot - first_name: Jean full_name: Raskin, Jean last_name: Raskin citation: ama: Chatterjee K, Doyen L, Filiot E, Raskin J. Doomsday equilibria for omega-regular games. Information and Computation. 2017;254:296-315. doi:10.1016/j.ic.2016.10.012 apa: Chatterjee, K., Doyen, L., Filiot, E., & Raskin, J. (2017). Doomsday equilibria for omega-regular games. Information and Computation. Elsevier. https://doi.org/10.1016/j.ic.2016.10.012 chicago: Chatterjee, Krishnendu, Laurent Doyen, Emmanuel Filiot, and Jean Raskin. “Doomsday Equilibria for Omega-Regular Games.” Information and Computation. Elsevier, 2017. https://doi.org/10.1016/j.ic.2016.10.012. ieee: K. Chatterjee, L. Doyen, E. Filiot, and J. Raskin, “Doomsday equilibria for omega-regular games,” Information and Computation, vol. 254. Elsevier, pp. 296–315, 2017. ista: Chatterjee K, Doyen L, Filiot E, Raskin J. 2017. Doomsday equilibria for omega-regular games. Information and Computation. 254, 296–315. mla: Chatterjee, Krishnendu, et al. “Doomsday Equilibria for Omega-Regular Games.” Information and Computation, vol. 254, Elsevier, 2017, pp. 296–315, doi:10.1016/j.ic.2016.10.012. short: K. Chatterjee, L. Doyen, E. Filiot, J. Raskin, Information and Computation 254 (2017) 296–315. date_created: 2018-12-11T11:47:53Z date_published: 2017-06-01T00:00:00Z date_updated: 2023-02-21T16:06:02Z day: '01' department: - _id: KrCh doi: 10.1016/j.ic.2016.10.012 ec_funded: 1 external_id: arxiv: - '1311.3238' intvolume: ' 254' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1311.3238 month: '06' oa: 1 oa_version: Submitted Version page: 296 - 315 project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Information and Computation publication_identifier: issn: - '08905401' publication_status: published publisher: Elsevier publist_id: '7036' quality_controlled: '1' related_material: record: - id: '10885' relation: earlier_version status: public scopus_import: '1' status: public title: Doomsday equilibria for omega-regular games type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 254 year: '2017' ... --- _id: '684' abstract: - lang: eng text: We generalize winning conditions in two-player games by adding a structural acceptance condition called obligations. Obligations are orthogonal to the linear winning conditions that define whether a play is winning. Obligations are a declaration that player 0 can achieve a certain value from a configuration. If the obligation is met, the value of that configuration for player 0 is 1. We define the value in such games and show that obligation games are determined. For Markov chains with Borel objectives and obligations, and finite turn-based stochastic parity games with obligations we give an alternative and simpler characterization of the value function. Based on this simpler definition we show that the decision problem of winning finite turn-based stochastic parity games with obligations is in NP∩co-NP. We also show that obligation games provide a game framework for reasoning about p-automata. © 2017 The Association for Symbolic Logic. article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Nir full_name: Piterman, Nir last_name: Piterman citation: ama: Chatterjee K, Piterman N. Obligation blackwell games and p-automata. Journal of Symbolic Logic. 2017;82(2):420-452. doi:10.1017/jsl.2016.71 apa: Chatterjee, K., & Piterman, N. (2017). Obligation blackwell games and p-automata. Journal of Symbolic Logic. Cambridge University Press. https://doi.org/10.1017/jsl.2016.71 chicago: Chatterjee, Krishnendu, and Nir Piterman. “Obligation Blackwell Games and P-Automata.” Journal of Symbolic Logic. Cambridge University Press, 2017. https://doi.org/10.1017/jsl.2016.71. ieee: K. Chatterjee and N. Piterman, “Obligation blackwell games and p-automata,” Journal of Symbolic Logic, vol. 82, no. 2. Cambridge University Press, pp. 420–452, 2017. ista: Chatterjee K, Piterman N. 2017. Obligation blackwell games and p-automata. Journal of Symbolic Logic. 82(2), 420–452. mla: Chatterjee, Krishnendu, and Nir Piterman. “Obligation Blackwell Games and P-Automata.” Journal of Symbolic Logic, vol. 82, no. 2, Cambridge University Press, 2017, pp. 420–52, doi:10.1017/jsl.2016.71. short: K. Chatterjee, N. Piterman, Journal of Symbolic Logic 82 (2017) 420–452. date_created: 2018-12-11T11:47:54Z date_published: 2017-06-01T00:00:00Z date_updated: 2021-04-16T12:10:53Z day: '01' department: - _id: KrCh doi: 10.1017/jsl.2016.71 intvolume: ' 82' issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1206.5174 month: '06' oa: 1 oa_version: Submitted Version page: 420 - 452 publication: Journal of Symbolic Logic publication_identifier: eissn: - 1943-5886 issn: - 0022-4812 publication_status: published publisher: Cambridge University Press publist_id: '7026' quality_controlled: '1' scopus_import: '1' status: public title: Obligation blackwell games and p-automata type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 82 year: '2017' ... --- _id: '699' abstract: - lang: eng text: 'In antagonistic symbioses, such as host–parasite interactions, one population’s success is the other’s loss. In mutualistic symbioses, such as division of labor, both parties can gain, but they might have different preferences over the possible mutualistic arrangements. The rates of evolution of the two populations in a symbiosis are important determinants of which population will be more successful: Faster evolution is thought to be favored in antagonistic symbioses (the “Red Queen effect”), but disfavored in certain mutualistic symbioses (the “Red King effect”). However, it remains unclear which biological parameters drive these effects. Here, we analyze the effects of the various determinants of evolutionary rate: generation time, mutation rate, population size, and the intensity of natural selection. Our main results hold for the case where mutation is infrequent. Slower evolution causes a long-term advantage in an important class of mutualistic interactions. Surprisingly, less intense selection is the strongest driver of this Red King effect, whereas relative mutation rates and generation times have little effect. In antagonistic interactions, faster evolution by any means is beneficial. Our results provide insight into the demographic evolution of symbionts. ' author: - first_name: Carl full_name: Veller, Carl last_name: Veller - first_name: Laura full_name: Hayward, Laura last_name: Hayward - first_name: Martin full_name: Nowak, Martin last_name: Nowak - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X citation: ama: Veller C, Hayward L, Nowak M, Hilbe C. The red queen and king in finite populations. PNAS. 2017;114(27):E5396-E5405. doi:10.1073/pnas.1702020114 apa: Veller, C., Hayward, L., Nowak, M., & Hilbe, C. (2017). The red queen and king in finite populations. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1702020114 chicago: Veller, Carl, Laura Hayward, Martin Nowak, and Christian Hilbe. “The Red Queen and King in Finite Populations.” PNAS. National Academy of Sciences, 2017. https://doi.org/10.1073/pnas.1702020114. ieee: C. Veller, L. Hayward, M. Nowak, and C. Hilbe, “The red queen and king in finite populations,” PNAS, vol. 114, no. 27. National Academy of Sciences, pp. E5396–E5405, 2017. ista: Veller C, Hayward L, Nowak M, Hilbe C. 2017. The red queen and king in finite populations. PNAS. 114(27), E5396–E5405. mla: Veller, Carl, et al. “The Red Queen and King in Finite Populations.” PNAS, vol. 114, no. 27, National Academy of Sciences, 2017, pp. E5396–405, doi:10.1073/pnas.1702020114. short: C. Veller, L. Hayward, M. Nowak, C. Hilbe, PNAS 114 (2017) E5396–E5405. date_created: 2018-12-11T11:48:00Z date_published: 2017-07-03T00:00:00Z date_updated: 2021-01-12T08:11:21Z day: '03' department: - _id: KrCh doi: 10.1073/pnas.1702020114 external_id: pmid: - '28630336' intvolume: ' 114' issue: '27' language: - iso: eng main_file_link: - open_access: '1' url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5502615/ month: '07' oa: 1 oa_version: Submitted Version page: E5396 - E5405 pmid: 1 publication: PNAS publication_identifier: issn: - '00278424' publication_status: published publisher: National Academy of Sciences publist_id: '7002' quality_controlled: '1' scopus_import: 1 status: public title: The red queen and king in finite populations type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 114 year: '2017' ... --- _id: '711' abstract: - lang: eng text: Nested weighted automata (NWA) present a robust and convenient automata-theoretic formalism for quantitative specifications. Previous works have considered NWA that processed input words only in the forward direction. It is natural to allow the automata to process input words backwards as well, for example, to measure the maximal or average time between a response and the preceding request. We therefore introduce and study bidirectional NWA that can process input words in both directions. First, we show that bidirectional NWA can express interesting quantitative properties that are not expressible by forward-only NWA. Second, for the fundamental decision problems of emptiness and universality, we establish decidability and complexity results for the new framework which match the best-known results for the special case of forward-only NWA. Thus, for NWA, the increased expressiveness of bidirectionality is achieved at no additional computational complexity. This is in stark contrast to the unweighted case, where bidirectional finite automata are no more expressive but exponentially more succinct than their forward-only counterparts. alternative_title: - LIPIcs article_number: '5' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Jan full_name: Otop, Jan last_name: Otop citation: ama: 'Chatterjee K, Henzinger TA, Otop J. Bidirectional nested weighted automata. In: Vol 85. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2017. doi:10.4230/LIPIcs.CONCUR.2017.5' apa: 'Chatterjee, K., Henzinger, T. A., & Otop, J. (2017). Bidirectional nested weighted automata (Vol. 85). Presented at the 28th International Conference on Concurrency Theory, CONCUR, Berlin, Germany: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.CONCUR.2017.5' chicago: Chatterjee, Krishnendu, Thomas A Henzinger, and Jan Otop. “Bidirectional Nested Weighted Automata,” Vol. 85. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. https://doi.org/10.4230/LIPIcs.CONCUR.2017.5. ieee: K. Chatterjee, T. A. Henzinger, and J. Otop, “Bidirectional nested weighted automata,” presented at the 28th International Conference on Concurrency Theory, CONCUR, Berlin, Germany, 2017, vol. 85. ista: Chatterjee K, Henzinger TA, Otop J. 2017. Bidirectional nested weighted automata. 28th International Conference on Concurrency Theory, CONCUR, LIPIcs, vol. 85, 5. mla: Chatterjee, Krishnendu, et al. Bidirectional Nested Weighted Automata. Vol. 85, 5, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017, doi:10.4230/LIPIcs.CONCUR.2017.5. short: K. Chatterjee, T.A. Henzinger, J. Otop, in:, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. conference: end_date: 2017-09-08 location: Berlin, Germany name: 28th International Conference on Concurrency Theory, CONCUR start_date: 2017-09-05 date_created: 2018-12-11T11:48:04Z date_published: 2017-08-01T00:00:00Z date_updated: 2021-01-12T08:11:53Z day: '01' ddc: - '004' - '005' department: - _id: KrCh - _id: ToHe doi: 10.4230/LIPIcs.CONCUR.2017.5 file: - access_level: open_access checksum: d2bda4783821a6358333fe27f11f4737 content_type: application/pdf creator: system date_created: 2018-12-12T10:08:02Z date_updated: 2020-07-14T12:47:49Z file_id: '4661' file_name: IST-2017-886-v1+1_LIPIcs-CONCUR-2017-5.pdf file_size: 570294 relation: main_file file_date_updated: 2020-07-14T12:47:49Z has_accepted_license: '1' intvolume: ' 85' language: - iso: eng month: '08' oa: 1 oa_version: Published Version publication_identifier: issn: - '18688969' publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik publist_id: '6976' pubrep_id: '886' quality_controlled: '1' scopus_import: 1 status: public title: Bidirectional nested weighted automata tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 85 year: '2017' ... --- _id: '716' abstract: - lang: eng text: 'Two-player games on graphs are central in many problems in formal verification and program analysis, such as synthesis and verification of open systems. In this work, we consider solving recursive game graphs (or pushdown game graphs) that model the control flow of sequential programs with recursion.While pushdown games have been studied before with qualitative objectives-such as reachability and ?-regular objectives- in this work, we study for the first time such games with the most well-studied quantitative objective, the mean-payoff objective. In pushdown games, two types of strategies are relevant: (1) global strategies, which depend on the entire global history; and (2) modular strategies, which have only local memory and thus do not depend on the context of invocation but rather only on the history of the current invocation of the module. Our main results are as follows: (1) One-player pushdown games with mean-payoff objectives under global strategies are decidable in polynomial time. (2) Two-player pushdown games with mean-payoff objectives under global strategies are undecidable. (3) One-player pushdown games with mean-payoff objectives under modular strategies are NP-hard. (4) Two-player pushdown games with mean-payoff objectives under modular strategies can be solved in NP (i.e., both one-player and two-player pushdown games with mean-payoff objectives under modular strategies are NP-complete). We also establish the optimal strategy complexity by showing that global strategies for mean-payoff objectives require infinite memory even in one-player pushdown games and memoryless modular strategies are sufficient in two-player pushdown games. Finally, we also show that all the problems have the same complexity if the stack boundedness condition is added, where along with the mean-payoff objective the player must also ensure that the stack height is bounded.' article_type: original author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Yaron full_name: Velner, Yaron last_name: Velner citation: ama: Chatterjee K, Velner Y. The complexity of mean-payoff pushdown games. Journal of the ACM. 2017;64(5):34. doi:10.1145/3121408 apa: Chatterjee, K., & Velner, Y. (2017). The complexity of mean-payoff pushdown games. Journal of the ACM. ACM. https://doi.org/10.1145/3121408 chicago: Chatterjee, Krishnendu, and Yaron Velner. “The Complexity of Mean-Payoff Pushdown Games.” Journal of the ACM. ACM, 2017. https://doi.org/10.1145/3121408. ieee: K. Chatterjee and Y. Velner, “The complexity of mean-payoff pushdown games,” Journal of the ACM, vol. 64, no. 5. ACM, p. 34, 2017. ista: Chatterjee K, Velner Y. 2017. The complexity of mean-payoff pushdown games. Journal of the ACM. 64(5), 34. mla: Chatterjee, Krishnendu, and Yaron Velner. “The Complexity of Mean-Payoff Pushdown Games.” Journal of the ACM, vol. 64, no. 5, ACM, 2017, p. 34, doi:10.1145/3121408. short: K. Chatterjee, Y. Velner, Journal of the ACM 64 (2017) 34. date_created: 2018-12-11T11:48:06Z date_published: 2017-09-01T00:00:00Z date_updated: 2021-01-12T08:12:08Z day: '01' department: - _id: KrCh doi: 10.1145/3121408 ec_funded: 1 external_id: arxiv: - '1201.2829' intvolume: ' 64' issue: '5' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1201.2829 month: '09' oa: 1 oa_version: Preprint page: '34' project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: Journal of the ACM publication_identifier: issn: - '00045411' publication_status: published publisher: ACM publist_id: '6964' quality_controlled: '1' scopus_import: 1 status: public title: The complexity of mean-payoff pushdown games type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 64 year: '2017' ... --- _id: '717' abstract: - lang: eng text: 'We consider finite-state and recursive game graphs with multidimensional mean-payoff objectives. In recursive games two types of strategies are relevant: global strategies and modular strategies. Our contributions are: (1) We show that finite-state multidimensional mean-payoff games can be solved in polynomial time if the number of dimensions and the maximal absolute value of weights are fixed; whereas for arbitrary dimensions the problem is coNP-complete. (2) We show that one-player recursive games with multidimensional mean-payoff objectives can be solved in polynomial time. Both above algorithms are based on hyperplane separation technique. (3) For recursive games we show that under modular strategies the multidimensional problem is undecidable. We show that if the number of modules, exits, and the maximal absolute value of the weights are fixed, then one-dimensional recursive mean-payoff games under modular strategies can be solved in polynomial time, whereas for unbounded number of exits or modules the problem is NP-hard.' acknowledgement: 'The research was supported by Austrian Science Fund (FWF) Grant No. P 23499-N23, FWF NFN Grant No. S11407-N23 (RiSE), ERC Start grant (279307: Graph Games), Microsoft faculty fellows award, the RICH Model Toolkit (ICT COST Action IC0901), and was carried out in partial fulfillment of the requirements for the Ph.D. degree of the second author.' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Yaron full_name: Velner, Yaron last_name: Velner citation: ama: Chatterjee K, Velner Y. Hyperplane separation technique for multidimensional mean-payoff games. Journal of Computer and System Sciences. 2017;88:236-259. doi:10.1016/j.jcss.2017.04.005 apa: Chatterjee, K., & Velner, Y. (2017). Hyperplane separation technique for multidimensional mean-payoff games. Journal of Computer and System Sciences. Academic Press. https://doi.org/10.1016/j.jcss.2017.04.005 chicago: Chatterjee, Krishnendu, and Yaron Velner. “Hyperplane Separation Technique for Multidimensional Mean-Payoff Games.” Journal of Computer and System Sciences. Academic Press, 2017. https://doi.org/10.1016/j.jcss.2017.04.005. ieee: K. Chatterjee and Y. Velner, “Hyperplane separation technique for multidimensional mean-payoff games,” Journal of Computer and System Sciences, vol. 88. Academic Press, pp. 236–259, 2017. ista: Chatterjee K, Velner Y. 2017. Hyperplane separation technique for multidimensional mean-payoff games. Journal of Computer and System Sciences. 88, 236–259. mla: Chatterjee, Krishnendu, and Yaron Velner. “Hyperplane Separation Technique for Multidimensional Mean-Payoff Games.” Journal of Computer and System Sciences, vol. 88, Academic Press, 2017, pp. 236–59, doi:10.1016/j.jcss.2017.04.005. short: K. Chatterjee, Y. Velner, Journal of Computer and System Sciences 88 (2017) 236–259. date_created: 2018-12-11T11:48:07Z date_published: 2017-09-01T00:00:00Z date_updated: 2023-02-23T10:38:15Z day: '01' department: - _id: KrCh doi: 10.1016/j.jcss.2017.04.005 ec_funded: 1 intvolume: ' 88' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1210.3141 month: '09' oa: 1 oa_version: Preprint page: 236 - 259 project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2587B514-B435-11E9-9278-68D0E5697425 name: Microsoft Research Faculty Fellowship publication: Journal of Computer and System Sciences publication_status: published publisher: Academic Press publist_id: '6963' quality_controlled: '1' related_material: record: - id: '2329' relation: earlier_version status: public scopus_import: 1 status: public title: Hyperplane separation technique for multidimensional mean-payoff games type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 88 year: '2017' ... --- _id: '719' abstract: - lang: eng text: 'The ubiquity of computation in modern machines and devices imposes a need to assert the correctness of their behavior. Especially in the case of safety-critical systems, their designers need to take measures that enforce their safe operation. Formal methods has emerged as a research field that addresses this challenge: by rigorously proving that all system executions adhere to their specifications, the correctness of an implementation under concern can be assured. To achieve this goal, a plethora of techniques are nowadays available, all of which are optimized for different system types and application domains.' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Rüdiger full_name: Ehlers, Rüdiger last_name: Ehlers citation: ama: 'Chatterjee K, Ehlers R. Special issue: Synthesis and SYNT 2014. Acta Informatica. 2017;54(6):543-544. doi:10.1007/s00236-017-0299-0' apa: 'Chatterjee, K., & Ehlers, R. (2017). Special issue: Synthesis and SYNT 2014. Acta Informatica. Springer. https://doi.org/10.1007/s00236-017-0299-0' chicago: 'Chatterjee, Krishnendu, and Rüdiger Ehlers. “Special Issue: Synthesis and SYNT 2014.” Acta Informatica. Springer, 2017. https://doi.org/10.1007/s00236-017-0299-0.' ieee: 'K. Chatterjee and R. Ehlers, “Special issue: Synthesis and SYNT 2014,” Acta Informatica, vol. 54, no. 6. Springer, pp. 543–544, 2017.' ista: 'Chatterjee K, Ehlers R. 2017. Special issue: Synthesis and SYNT 2014. Acta Informatica. 54(6), 543–544.' mla: 'Chatterjee, Krishnendu, and Rüdiger Ehlers. “Special Issue: Synthesis and SYNT 2014.” Acta Informatica, vol. 54, no. 6, Springer, 2017, pp. 543–44, doi:10.1007/s00236-017-0299-0.' short: K. Chatterjee, R. Ehlers, Acta Informatica 54 (2017) 543–544. date_created: 2018-12-11T11:48:07Z date_published: 2017-09-01T00:00:00Z date_updated: 2021-01-12T08:12:18Z day: '01' department: - _id: KrCh doi: 10.1007/s00236-017-0299-0 intvolume: ' 54' issue: '6' language: - iso: eng month: '09' oa_version: None page: 543 - 544 publication: Acta Informatica publication_identifier: issn: - '00015903' publication_status: published publisher: Springer publist_id: '6961' quality_controlled: '1' scopus_import: 1 status: public title: 'Special issue: Synthesis and SYNT 2014' type: journal_article user_id: 4435EBFC-F248-11E8-B48F-1D18A9856A87 volume: 54 year: '2017' ... --- _id: '13160' abstract: - lang: eng text: "Transforming deterministic ω\r\n-automata into deterministic parity automata is traditionally done using variants of appearance records. We present a more efficient variant of this approach, tailored to Rabin automata, and several optimizations applicable to all appearance records. We compare the methods experimentally and find out that our method produces smaller automata than previous approaches. Moreover, the experiments demonstrate the potential of our method for LTL synthesis, using LTL-to-Rabin translators. It leads to significantly smaller parity automata when compared to state-of-the-art approaches on complex formulae." acknowledgement: This work is partially funded by the DFG project “Verified Model Checkers” and by the Czech Science Foundation, grant No. P202/12/G061. alternative_title: - LNCS article_processing_charge: No author: - first_name: Jan full_name: Kretinsky, Jan id: 44CEF464-F248-11E8-B48F-1D18A9856A87 last_name: Kretinsky orcid: 0000-0002-8122-2881 - first_name: Tobias full_name: Meggendorfer, Tobias id: b21b0c15-30a2-11eb-80dc-f13ca25802e1 last_name: Meggendorfer orcid: 0000-0002-1712-2165 - first_name: Clara full_name: Waldmann, Clara last_name: Waldmann - first_name: Maximilian full_name: Weininger, Maximilian last_name: Weininger citation: ama: 'Kretinsky J, Meggendorfer T, Waldmann C, Weininger M. Index appearance record for transforming Rabin automata into parity automata. In: Tools and Algorithms for the Construction and Analysis of Systems. Vol 10205. Springer; 2017:443-460. doi:10.1007/978-3-662-54577-5_26' apa: 'Kretinsky, J., Meggendorfer, T., Waldmann, C., & Weininger, M. (2017). Index appearance record for transforming Rabin automata into parity automata. In Tools and Algorithms for the Construction and Analysis of Systems (Vol. 10205, pp. 443–460). Uppsala, Sweden: Springer. https://doi.org/10.1007/978-3-662-54577-5_26' chicago: Kretinsky, Jan, Tobias Meggendorfer, Clara Waldmann, and Maximilian Weininger. “Index Appearance Record for Transforming Rabin Automata into Parity Automata.” In Tools and Algorithms for the Construction and Analysis of Systems, 10205:443–60. Springer, 2017. https://doi.org/10.1007/978-3-662-54577-5_26. ieee: J. Kretinsky, T. Meggendorfer, C. Waldmann, and M. Weininger, “Index appearance record for transforming Rabin automata into parity automata,” in Tools and Algorithms for the Construction and Analysis of Systems, Uppsala, Sweden, 2017, vol. 10205, pp. 443–460. ista: 'Kretinsky J, Meggendorfer T, Waldmann C, Weininger M. 2017. Index appearance record for transforming Rabin automata into parity automata. Tools and Algorithms for the Construction and Analysis of Systems. TACAS: Tools and Algorithms for the Construction and Analysis of Systems, LNCS, vol. 10205, 443–460.' mla: Kretinsky, Jan, et al. “Index Appearance Record for Transforming Rabin Automata into Parity Automata.” Tools and Algorithms for the Construction and Analysis of Systems, vol. 10205, Springer, 2017, pp. 443–60, doi:10.1007/978-3-662-54577-5_26. short: J. Kretinsky, T. Meggendorfer, C. Waldmann, M. Weininger, in:, Tools and Algorithms for the Construction and Analysis of Systems, Springer, 2017, pp. 443–460. conference: end_date: 2017-04-29 location: Uppsala, Sweden name: 'TACAS: Tools and Algorithms for the Construction and Analysis of Systems' start_date: 2017-04-22 date_created: 2023-06-21T13:21:14Z date_published: 2017-03-31T00:00:00Z date_updated: 2023-06-21T13:29:46Z day: '31' department: - _id: KrCh doi: 10.1007/978-3-662-54577-5_26 external_id: arxiv: - '1701.05738' intvolume: ' 10205' language: - iso: eng main_file_link: - open_access: '1' url: https://doi.org/10.48550/arXiv.1701.05738 month: '03' oa: 1 oa_version: Preprint page: 443-460 publication: Tools and Algorithms for the Construction and Analysis of Systems publication_identifier: eisbn: - '9783662545775' eissn: - 1611-3349 isbn: - '9783662545768' issn: - 0302-9743 publication_status: published publisher: Springer quality_controlled: '1' status: public title: Index appearance record for transforming Rabin automata into parity automata type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 10205 year: '2017' ... --- _id: '950' abstract: - lang: eng text: "Two-player games on graphs are widely studied in formal methods as they model the interaction between a system and its environment. The game is played by moving a token throughout a graph to produce an infinite path. There are several common modes to determine how the players move the token through the graph; e.g., in turn-based games the players alternate turns in moving the token. We study the bidding mode of moving the token, which, to the best of our knowledge, has never been studied in infinite-duration games. Both players have separate budgets, which sum up to $1$. In each turn, a bidding takes place. Both players submit bids simultaneously, and a bid is legal if it does not exceed the available budget. The winner of the bidding pays his bid to the other player and moves the token. For reachability objectives, repeated bidding games have been studied and are called Richman games. There, a central question is the existence and computation of threshold budgets; namely, a value t\\in [0,1] such that if\\PO's budget exceeds $t$, he can win the game, and if\\PT's budget exceeds 1-t, he can win the game. We focus on parity games and mean-payoff games. We show the existence of threshold budgets in these games, and reduce the problem of finding them to Richman games. We also determine the strategy-complexity of an optimal strategy. Our most interesting result shows that memoryless strategies suffice for mean-payoff bidding games. \r\n" alternative_title: - LIPIcs article_number: '17' author: - first_name: Guy full_name: Avni, Guy id: 463C8BC2-F248-11E8-B48F-1D18A9856A87 last_name: Avni orcid: 0000-0001-5588-8287 - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Ventsislav K full_name: Chonev, Ventsislav K id: 36CBE2E6-F248-11E8-B48F-1D18A9856A87 last_name: Chonev citation: ama: 'Avni G, Henzinger TA, Chonev VK. Infinite-duration bidding games. In: Vol 85. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2017. doi:10.4230/LIPIcs.CONCUR.2017.21' apa: 'Avni, G., Henzinger, T. A., & Chonev, V. K. (2017). Infinite-duration bidding games (Vol. 85). Presented at the CONCUR: Concurrency Theory, Berlin, Germany: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.CONCUR.2017.21' chicago: Avni, Guy, Thomas A Henzinger, and Ventsislav K Chonev. “Infinite-Duration Bidding Games,” Vol. 85. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. https://doi.org/10.4230/LIPIcs.CONCUR.2017.21. ieee: 'G. Avni, T. A. Henzinger, and V. K. Chonev, “Infinite-duration bidding games,” presented at the CONCUR: Concurrency Theory, Berlin, Germany, 2017, vol. 85.' ista: 'Avni G, Henzinger TA, Chonev VK. 2017. Infinite-duration bidding games. CONCUR: Concurrency Theory, LIPIcs, vol. 85, 17.' mla: Avni, Guy, et al. Infinite-Duration Bidding Games. Vol. 85, 17, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017, doi:10.4230/LIPIcs.CONCUR.2017.21. short: G. Avni, T.A. Henzinger, V.K. Chonev, in:, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2017. conference: end_date: 2017-09-07 location: Berlin, Germany name: 'CONCUR: Concurrency Theory' start_date: 2017-09-05 date_created: 2018-12-11T11:49:22Z date_published: 2017-09-01T00:00:00Z date_updated: 2023-08-29T07:02:13Z day: '01' ddc: - '000' department: - _id: ToHe - _id: KrCh doi: 10.4230/LIPIcs.CONCUR.2017.21 external_id: arxiv: - '1705.01433' file: - access_level: open_access checksum: 6d5cccf755207b91ccbef95d8275b013 content_type: application/pdf creator: system date_created: 2018-12-12T10:18:00Z date_updated: 2020-07-14T12:48:16Z file_id: '5318' file_name: IST-2017-844-v1+1_concur-cr.pdf file_size: 335170 relation: main_file file_date_updated: 2020-07-14T12:48:16Z has_accepted_license: '1' intvolume: ' 85' language: - iso: eng month: '09' oa: 1 oa_version: Published Version project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: The Wittgenstein Prize publication_identifier: issn: - 1868-8969 publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik publist_id: '6466' pubrep_id: '844' quality_controlled: '1' related_material: record: - id: '6752' relation: later_version status: public scopus_import: 1 status: public title: Infinite-duration bidding games tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 85 year: '2017' ... --- _id: '821' abstract: - lang: eng text: "This dissertation focuses on algorithmic aspects of program verification, and presents modeling and complexity advances on several problems related to the\r\nstatic analysis of programs, the stateless model checking of concurrent programs, and the competitive analysis of real-time scheduling algorithms.\r\nOur contributions can be broadly grouped into five categories.\r\n\r\nOur first contribution is a set of new algorithms and data structures for the quantitative and data-flow analysis of programs, based on the graph-theoretic notion of treewidth.\r\nIt has been observed that the control-flow graphs of typical programs have special structure, and are characterized as graphs of small treewidth.\r\nWe utilize this structural property to provide faster algorithms for the quantitative and data-flow analysis of recursive and concurrent programs.\r\nIn most cases we make an algebraic treatment of the considered problem,\r\nwhere several interesting analyses, such as the reachability, shortest path, and certain kind of data-flow analysis problems follow as special cases. \r\nWe exploit the constant-treewidth property to obtain algorithmic improvements for on-demand versions of the problems, \r\nand provide data structures with various tradeoffs between the resources spent in the preprocessing and querying phase.\r\nWe also improve on the algorithmic complexity of quantitative problems outside the algebraic path framework,\r\nnamely of the minimum mean-payoff, minimum ratio, and minimum initial credit for energy problems.\r\n\r\n\r\nOur second contribution is a set of algorithms for Dyck reachability with applications to data-dependence analysis and alias analysis.\r\nIn particular, we develop an optimal algorithm for Dyck reachability on bidirected graphs, which are ubiquitous in context-insensitive, field-sensitive points-to analysis.\r\nAdditionally, we develop an efficient algorithm for context-sensitive data-dependence analysis via Dyck reachability,\r\nwhere the task is to obtain analysis summaries of library code in the presence of callbacks.\r\nOur algorithm preprocesses libraries in almost linear time, after which the contribution of the library in the complexity of the client analysis is (i)~linear in the number of call sites and (ii)~only logarithmic in the size of the whole library, as opposed to linear in the size of the whole library.\r\nFinally, we prove that Dyck reachability is Boolean Matrix Multiplication-hard in general, and the hardness also holds for graphs of constant treewidth.\r\nThis hardness result strongly indicates that there exist no combinatorial algorithms for Dyck reachability with truly subcubic complexity.\r\n\r\n\r\nOur third contribution is the formalization and algorithmic treatment of the Quantitative Interprocedural Analysis framework.\r\nIn this framework, the transitions of a recursive program are annotated as good, bad or neutral, and receive a weight which measures\r\nthe magnitude of their respective effect.\r\nThe Quantitative Interprocedural Analysis problem asks to determine whether there exists an infinite run of the program where the long-run ratio of the bad weights over the good weights is above a given threshold.\r\nWe illustrate how several quantitative problems related to static analysis of recursive programs can be instantiated in this framework,\r\nand present some case studies to this direction.\r\n\r\n\r\nOur fourth contribution is a new dynamic partial-order reduction for the stateless model checking of concurrent programs. Traditional approaches rely on the standard Mazurkiewicz equivalence between traces, by means of partitioning the trace space into equivalence classes, and attempting to explore a few representatives from each class.\r\nWe present a new dynamic partial-order reduction method called the Data-centric Partial Order Reduction (DC-DPOR).\r\nOur algorithm is based on a new equivalence between traces, called the observation equivalence.\r\nDC-DPOR explores a coarser partitioning of the trace space than any exploration method based on the standard Mazurkiewicz equivalence.\r\nDepending on the program, the new partitioning can be even exponentially coarser.\r\nAdditionally, DC-DPOR spends only polynomial time in each explored class.\r\n\r\n\r\nOur fifth contribution is the use of automata and game-theoretic verification techniques in the competitive analysis and synthesis of real-time scheduling algorithms for firm-deadline tasks.\r\nOn the analysis side, we leverage automata on infinite words to compute the competitive ratio of real-time schedulers subject to various environmental constraints.\r\nOn the synthesis side, we introduce a new instance of two-player mean-payoff partial-information games, and show\r\nhow the synthesis of an optimal real-time scheduler can be reduced to computing winning strategies in this new type of games." acknowledgement: "First, I am thankful to my advisor, Krishnendu Chatterjee, for offering me the opportunity to\r\nmaterialize my scientific curiosity in a remarkably wide range of interesting topics, as well as for his constant availability and continuous support throughout my doctoral studies. I have had the privilege of collaborating with, discussing and getting inspired by all members of my committee: Thomas A. Henzinger, Ulrich Schmid and Martin A. Nowak. The role of the above four people has been very instrumental both to the research carried out for this dissertation, and to the researcher I evolved to in the process.\r\nI have greatly enjoyed my numerous brainstorming sessions with Rasmus Ibsen-Jensen, many\r\nof which led to results on low-treewidth graphs presented here. I thank Alex Kößler for our\r\ndiscussions on modeling and analyzing real-time scheduling algorithms, Yaron Velner for our\r\ncollaboration on the Quantitative Interprocedural Analysis framework, and Nishant Sinha for our initial discussions on partial order reduction techniques in stateless model checking. I also thank Jan Otop, Ben Adlam, Bernhard Kragl and Josef Tkadlec for our fruitful collaborations on\r\ntopics outside the scope of this dissertation, as well as the interns Prateesh Goyal, Amir Kafshdar Goharshady, Samarth Mishra, Bhavya Choudhary and Marek Chalupa, with whom I have shared my excitement on various research topics. Together with my collaborators, I thank officemates and members of the Chatterjee and Henzinger groups throughout the years, Thorsten Tarrach, Ventsi Chonev, Roopsha Samanta, Przemek Daca, Mirco Giacobbe, Tanja Petrov, Ashutosh\r\nGupta, Arjun Radhakrishna, \ Petr Novontý, Christian Hilbe, Jakob Ruess, Martin Chmelik,\r\nCezara Dragoi, Johannes Reiter, Andrey Kupriyanov, Guy Avni, Sasha Rubin, Jessica Davies, Hongfei Fu, Thomas Ferrère, Pavol Cerný, Ali Sezgin, Jan Kretínský, Sergiy Bogomolov, Hui\r\nKong, Benjamin Aminof, Duc-Hiep Chu, and Damien Zufferey. Besides collaborations and office spaces, with many of the above people I have been fortunate to share numerous whiteboard\r\ndiscussions, as well as memorable long walks and amicable meals accompanied by stimulating\r\nconversations. I am highly indebted to Elisabeth Hacker for her continuous assistance in matters\r\nthat often exceeded her official duties, and who made my integration in Austria a smooth process." alternative_title: - ISTA Thesis article_processing_charge: No author: - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 citation: ama: Pavlogiannis A. Algorithmic advances in program analysis and their applications. 2017. doi:10.15479/AT:ISTA:th_854 apa: Pavlogiannis, A. (2017). Algorithmic advances in program analysis and their applications. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:th_854 chicago: Pavlogiannis, Andreas. “Algorithmic Advances in Program Analysis and Their Applications.” Institute of Science and Technology Austria, 2017. https://doi.org/10.15479/AT:ISTA:th_854. ieee: A. Pavlogiannis, “Algorithmic advances in program analysis and their applications,” Institute of Science and Technology Austria, 2017. ista: Pavlogiannis A. 2017. Algorithmic advances in program analysis and their applications. Institute of Science and Technology Austria. mla: Pavlogiannis, Andreas. Algorithmic Advances in Program Analysis and Their Applications. Institute of Science and Technology Austria, 2017, doi:10.15479/AT:ISTA:th_854. short: A. Pavlogiannis, Algorithmic Advances in Program Analysis and Their Applications, Institute of Science and Technology Austria, 2017. date_created: 2018-12-11T11:48:41Z date_published: 2017-08-09T00:00:00Z date_updated: 2023-09-07T12:01:59Z day: '09' ddc: - '000' degree_awarded: PhD department: - _id: KrCh doi: 10.15479/AT:ISTA:th_854 ec_funded: 1 file: - access_level: open_access checksum: 3a3ec003f6ee73f41f82a544d63dfc77 content_type: application/pdf creator: system date_created: 2018-12-12T10:11:44Z date_updated: 2020-07-14T12:48:10Z file_id: '4900' file_name: IST-2017-854-v1+1_Pavlogiannis_Thesis_PubRep.pdf file_size: 4103115 relation: main_file - access_level: closed checksum: bd2facc45ff8a2e20c5ed313c2ccaa83 content_type: application/zip creator: dernst date_created: 2019-04-05T07:59:31Z date_updated: 2020-07-14T12:48:10Z file_id: '6201' file_name: 2017_thesis_Pavlogiannis.zip file_size: 14744374 relation: source_file file_date_updated: 2020-07-14T12:48:10Z has_accepted_license: '1' language: - iso: eng month: '08' oa: 1 oa_version: Published Version page: '418' project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication_identifier: issn: - 2663-337X publication_status: published publisher: Institute of Science and Technology Austria publist_id: '6828' pubrep_id: '854' related_material: record: - id: '1071' relation: part_of_dissertation status: public - id: '1437' relation: part_of_dissertation status: public - id: '1602' relation: part_of_dissertation status: public - id: '1604' relation: part_of_dissertation status: public - id: '1607' relation: part_of_dissertation status: public - id: '1714' relation: part_of_dissertation status: public status: public supervisor: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X title: Algorithmic advances in program analysis and their applications tmp: image: /image/cc_by_nd.png legal_code_url: https://creativecommons.org/licenses/by-nd/4.0/legalcode name: Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0) short: CC BY-ND (4.0) type: dissertation user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 year: '2017' ... --- _id: '1407' abstract: - lang: eng text: We consider the problem of computing the set of initial states of a dynamical system such that there exists a control strategy to ensure that the trajectories satisfy a temporal logic specification with probability 1 (almost-surely). We focus on discrete-time, stochastic linear dynamics and specifications given as formulas of the Generalized Reactivity(1) fragment of Linear Temporal Logic over linear predicates in the states of the system. We propose a solution based on iterative abstraction-refinement, and turn-based 2-player probabilistic games. While the theoretical guarantee of our algorithm after any finite number of iterations is only a partial solution, we show that if our algorithm terminates, then the result is the set of all satisfying initial states. Moreover, for any (partial) solution our algorithm synthesizes witness control strategies to ensure almost-sure satisfaction of the temporal logic specification. While the proposed algorithm guarantees progress and soundness in every iteration, it is computationally demanding. We offer an alternative, more efficient solution for the reachability properties that decomposes the problem into a series of smaller problems of the same type. All algorithms are demonstrated on an illustrative case study. article_processing_charge: No author: - first_name: Mária full_name: Svoreňová, Mária last_name: Svoreňová - first_name: Jan full_name: Kretinsky, Jan id: 44CEF464-F248-11E8-B48F-1D18A9856A87 last_name: Kretinsky orcid: 0000-0002-8122-2881 - first_name: Martin full_name: Chmelik, Martin id: 3624234E-F248-11E8-B48F-1D18A9856A87 last_name: Chmelik - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Ivana full_name: Cěrná, Ivana last_name: Cěrná - first_name: Cǎlin full_name: Belta, Cǎlin last_name: Belta citation: ama: 'Svoreňová M, Kretinsky J, Chmelik M, Chatterjee K, Cěrná I, Belta C. Temporal logic control for stochastic linear systems using abstraction refinement of probabilistic games. Nonlinear Analysis: Hybrid Systems. 2017;23(2):230-253. doi:10.1016/j.nahs.2016.04.006' apa: 'Svoreňová, M., Kretinsky, J., Chmelik, M., Chatterjee, K., Cěrná, I., & Belta, C. (2017). Temporal logic control for stochastic linear systems using abstraction refinement of probabilistic games. Nonlinear Analysis: Hybrid Systems. Elsevier. https://doi.org/10.1016/j.nahs.2016.04.006' chicago: 'Svoreňová, Mária, Jan Kretinsky, Martin Chmelik, Krishnendu Chatterjee, Ivana Cěrná, and Cǎlin Belta. “Temporal Logic Control for Stochastic Linear Systems Using Abstraction Refinement of Probabilistic Games.” Nonlinear Analysis: Hybrid Systems. Elsevier, 2017. https://doi.org/10.1016/j.nahs.2016.04.006.' ieee: 'M. Svoreňová, J. Kretinsky, M. Chmelik, K. Chatterjee, I. Cěrná, and C. Belta, “Temporal logic control for stochastic linear systems using abstraction refinement of probabilistic games,” Nonlinear Analysis: Hybrid Systems, vol. 23, no. 2. Elsevier, pp. 230–253, 2017.' ista: 'Svoreňová M, Kretinsky J, Chmelik M, Chatterjee K, Cěrná I, Belta C. 2017. Temporal logic control for stochastic linear systems using abstraction refinement of probabilistic games. Nonlinear Analysis: Hybrid Systems. 23(2), 230–253.' mla: 'Svoreňová, Mária, et al. “Temporal Logic Control for Stochastic Linear Systems Using Abstraction Refinement of Probabilistic Games.” Nonlinear Analysis: Hybrid Systems, vol. 23, no. 2, Elsevier, 2017, pp. 230–53, doi:10.1016/j.nahs.2016.04.006.' short: 'M. Svoreňová, J. Kretinsky, M. Chmelik, K. Chatterjee, I. Cěrná, C. Belta, Nonlinear Analysis: Hybrid Systems 23 (2017) 230–253.' date_created: 2018-12-11T11:51:50Z date_published: 2017-02-01T00:00:00Z date_updated: 2023-09-20T09:43:09Z day: '01' department: - _id: ToHe - _id: KrCh doi: 10.1016/j.nahs.2016.04.006 ec_funded: 1 external_id: arxiv: - '1410.5387' isi: - '000390637000014' intvolume: ' 23' isi: 1 issue: '2' language: - iso: eng main_file_link: - open_access: '1' url: http://arxiv.org/abs/1410.5387 month: '02' oa: 1 oa_version: Preprint page: 230 - 253 project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme - _id: 25EE3708-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '267989' name: Quantitative Reactive Modeling - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory publication: 'Nonlinear Analysis: Hybrid Systems' publication_status: published publisher: Elsevier publist_id: '5800' quality_controlled: '1' related_material: record: - id: '1689' relation: earlier_version status: public scopus_import: '1' status: public title: Temporal logic control for stochastic linear systems using abstraction refinement of probabilistic games type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 23 year: '2017' ... --- _id: '1294' abstract: - lang: eng text: We study controller synthesis problems for finite-state Markov decision processes, where the objective is to optimize the expected mean-payoff performance and stability (also known as variability in the literature). We argue that the basic notion of expressing the stability using the statistical variance of the mean payoff is sometimes insufficient, and propose an alternative definition. We show that a strategy ensuring both the expected mean payoff and the variance below given bounds requires randomization and memory, under both the above definitions. We then show that the problem of finding such a strategy can be expressed as a set of constraints. article_processing_charge: No author: - first_name: Tomáš full_name: Brázdil, Tomáš last_name: Brázdil - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Vojtěch full_name: Forejt, Vojtěch last_name: Forejt - first_name: Antonín full_name: Kučera, Antonín last_name: Kučera citation: ama: Brázdil T, Chatterjee K, Forejt V, Kučera A. Trading performance for stability in Markov decision processes. Journal of Computer and System Sciences. 2017;84:144-170. doi:10.1016/j.jcss.2016.09.009 apa: Brázdil, T., Chatterjee, K., Forejt, V., & Kučera, A. (2017). Trading performance for stability in Markov decision processes. Journal of Computer and System Sciences. Elsevier. https://doi.org/10.1016/j.jcss.2016.09.009 chicago: Brázdil, Tomáš, Krishnendu Chatterjee, Vojtěch Forejt, and Antonín Kučera. “Trading Performance for Stability in Markov Decision Processes.” Journal of Computer and System Sciences. Elsevier, 2017. https://doi.org/10.1016/j.jcss.2016.09.009. ieee: T. Brázdil, K. Chatterjee, V. Forejt, and A. Kučera, “Trading performance for stability in Markov decision processes,” Journal of Computer and System Sciences, vol. 84. Elsevier, pp. 144–170, 2017. ista: Brázdil T, Chatterjee K, Forejt V, Kučera A. 2017. Trading performance for stability in Markov decision processes. Journal of Computer and System Sciences. 84, 144–170. mla: Brázdil, Tomáš, et al. “Trading Performance for Stability in Markov Decision Processes.” Journal of Computer and System Sciences, vol. 84, Elsevier, 2017, pp. 144–70, doi:10.1016/j.jcss.2016.09.009. short: T. Brázdil, K. Chatterjee, V. Forejt, A. Kučera, Journal of Computer and System Sciences 84 (2017) 144–170. date_created: 2018-12-11T11:51:12Z date_published: 2017-03-01T00:00:00Z date_updated: 2023-09-20T11:15:31Z day: '01' ddc: - '004' - '006' department: - _id: KrCh doi: 10.1016/j.jcss.2016.09.009 ec_funded: 1 external_id: isi: - '000388430000011' file: - access_level: open_access checksum: 91271b23cf884d7c06d33bef0cd623b1 content_type: application/pdf creator: system date_created: 2018-12-12T10:11:30Z date_updated: 2020-07-14T12:44:42Z file_id: '4885' file_name: IST-2016-717-v1+1_1-s2.0-S0022000016300897-main.pdf file_size: 708657 relation: main_file file_date_updated: 2020-07-14T12:44:42Z has_accepted_license: '1' intvolume: ' 84' isi: 1 language: - iso: eng month: '03' oa: 1 oa_version: Published Version page: 144 - 170 project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2587B514-B435-11E9-9278-68D0E5697425 name: Microsoft Research Faculty Fellowship publication: Journal of Computer and System Sciences publication_status: published publisher: Elsevier publist_id: '6009' pubrep_id: '717' quality_controlled: '1' related_material: record: - id: '2305' relation: earlier_version status: public scopus_import: '1' status: public title: Trading performance for stability in Markov decision processes tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 84 year: '2017' ... --- _id: '1080' abstract: - lang: eng text: Reconstructing the evolutionary history of metastases is critical for understanding their basic biological principles and has profound clinical implications. Genome-wide sequencing data has enabled modern phylogenomic methods to accurately dissect subclones and their phylogenies from noisy and impure bulk tumour samples at unprecedented depth. However, existing methods are not designed to infer metastatic seeding patterns. Here we develop a tool, called Treeomics, to reconstruct the phylogeny of metastases and map subclones to their anatomic locations. Treeomics infers comprehensive seeding patterns for pancreatic, ovarian, and prostate cancers. Moreover, Treeomics correctly disambiguates true seeding patterns from sequencing artifacts; 7% of variants were misclassified by conventional statistical methods. These artifacts can skew phylogenies by creating illusory tumour heterogeneity among distinct samples. In silico benchmarking on simulated tumour phylogenies across a wide range of sample purities (15–95%) and sequencing depths (25-800 × ) demonstrates the accuracy of Treeomics compared with existing methods. article_number: '14114' article_processing_charge: No author: - first_name: Johannes full_name: Reiter, Johannes id: 4A918E98-F248-11E8-B48F-1D18A9856A87 last_name: Reiter orcid: 0000-0002-0170-7353 - first_name: Alvin full_name: Makohon Moore, Alvin last_name: Makohon Moore - first_name: Jeffrey full_name: Gerold, Jeffrey last_name: Gerold - first_name: Ivana full_name: Božić, Ivana last_name: Božić - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Christine full_name: Iacobuzio Donahue, Christine last_name: Iacobuzio Donahue - first_name: Bert full_name: Vogelstein, Bert last_name: Vogelstein - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: Reiter J, Makohon Moore A, Gerold J, et al. Reconstructing metastatic seeding patterns of human cancers. Nature Communications. 2017;8. doi:10.1038/ncomms14114 apa: Reiter, J., Makohon Moore, A., Gerold, J., Božić, I., Chatterjee, K., Iacobuzio Donahue, C., … Nowak, M. (2017). Reconstructing metastatic seeding patterns of human cancers. Nature Communications. Nature Publishing Group. https://doi.org/10.1038/ncomms14114 chicago: Reiter, Johannes, Alvin Makohon Moore, Jeffrey Gerold, Ivana Božić, Krishnendu Chatterjee, Christine Iacobuzio Donahue, Bert Vogelstein, and Martin Nowak. “Reconstructing Metastatic Seeding Patterns of Human Cancers.” Nature Communications. Nature Publishing Group, 2017. https://doi.org/10.1038/ncomms14114. ieee: J. Reiter et al., “Reconstructing metastatic seeding patterns of human cancers,” Nature Communications, vol. 8. Nature Publishing Group, 2017. ista: Reiter J, Makohon Moore A, Gerold J, Božić I, Chatterjee K, Iacobuzio Donahue C, Vogelstein B, Nowak M. 2017. Reconstructing metastatic seeding patterns of human cancers. Nature Communications. 8, 14114. mla: Reiter, Johannes, et al. “Reconstructing Metastatic Seeding Patterns of Human Cancers.” Nature Communications, vol. 8, 14114, Nature Publishing Group, 2017, doi:10.1038/ncomms14114. short: J. Reiter, A. Makohon Moore, J. Gerold, I. Božić, K. Chatterjee, C. Iacobuzio Donahue, B. Vogelstein, M. Nowak, Nature Communications 8 (2017). date_created: 2018-12-11T11:50:02Z date_published: 2017-01-31T00:00:00Z date_updated: 2023-09-20T11:55:31Z day: '31' ddc: - '004' - '006' department: - _id: KrCh doi: 10.1038/ncomms14114 ec_funded: 1 external_id: isi: - '000393096600001' file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:15:15Z date_updated: 2018-12-12T10:15:15Z file_id: '5133' file_name: IST-2017-786-v1+1_ncomms14114.pdf file_size: 897050 relation: main_file file_date_updated: 2018-12-12T10:15:15Z has_accepted_license: '1' intvolume: ' 8' isi: 1 language: - iso: eng month: '01' oa: 1 oa_version: Published Version project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory publication: Nature Communications publication_identifier: issn: - '20411723' publication_status: published publisher: Nature Publishing Group publist_id: '6301' pubrep_id: '786' quality_controlled: '1' scopus_import: '1' status: public title: Reconstructing metastatic seeding patterns of human cancers tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 8 year: '2017' ... --- _id: '1065' abstract: - lang: eng text: 'We consider the problem of reachability in pushdown graphs. We study the problem for pushdown graphs with constant treewidth. Even for pushdown graphs with treewidth 1, for the reachability problem we establish the following: (i) the problem is PTIME-complete, and (ii) any subcubic algorithm for the problem would contradict the k-clique conjecture and imply faster combinatorial algorithms for cliques in graphs.' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Georg F full_name: Osang, Georg F id: 464B40D6-F248-11E8-B48F-1D18A9856A87 last_name: Osang orcid: 0000-0002-8882-5116 citation: ama: Chatterjee K, Osang GF. Pushdown reachability with constant treewidth. Information Processing Letters. 2017;122:25-29. doi:10.1016/j.ipl.2017.02.003 apa: Chatterjee, K., & Osang, G. F. (2017). Pushdown reachability with constant treewidth. Information Processing Letters. Elsevier. https://doi.org/10.1016/j.ipl.2017.02.003 chicago: Chatterjee, Krishnendu, and Georg F Osang. “Pushdown Reachability with Constant Treewidth.” Information Processing Letters. Elsevier, 2017. https://doi.org/10.1016/j.ipl.2017.02.003. ieee: K. Chatterjee and G. F. Osang, “Pushdown reachability with constant treewidth,” Information Processing Letters, vol. 122. Elsevier, pp. 25–29, 2017. ista: Chatterjee K, Osang GF. 2017. Pushdown reachability with constant treewidth. Information Processing Letters. 122, 25–29. mla: Chatterjee, Krishnendu, and Georg F. Osang. “Pushdown Reachability with Constant Treewidth.” Information Processing Letters, vol. 122, Elsevier, 2017, pp. 25–29, doi:10.1016/j.ipl.2017.02.003. short: K. Chatterjee, G.F. Osang, Information Processing Letters 122 (2017) 25–29. date_created: 2018-12-11T11:49:57Z date_published: 2017-06-01T00:00:00Z date_updated: 2023-09-20T12:08:18Z day: '01' ddc: - '000' department: - _id: KrCh - _id: HeEd doi: 10.1016/j.ipl.2017.02.003 ec_funded: 1 external_id: isi: - '000399506600005' file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:13:17Z date_updated: 2019-10-15T07:44:51Z file_id: '4998' file_name: IST-2018-991-v1+2_2018_Chatterjee_Pushdown_PREPRINT.pdf file_size: 247657 relation: main_file file_date_updated: 2019-10-15T07:44:51Z has_accepted_license: '1' intvolume: ' 122' isi: 1 language: - iso: eng month: '06' oa: 1 oa_version: Submitted Version page: 25 - 29 project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: Information Processing Letters publication_identifier: issn: - '00200190' publication_status: published publisher: Elsevier publist_id: '6323' pubrep_id: '991' quality_controlled: '1' scopus_import: '1' status: public title: Pushdown reachability with constant treewidth type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 122 year: '2017' ... --- _id: '1066' abstract: - lang: eng text: "Simulation is an attractive alternative to language inclusion for automata as it is an under-approximation of language inclusion, but usually has much lower complexity. Simulation has also been extended in two orthogonal directions, namely, (1) fair simulation, for simulation over specified set of infinite runs; and (2) quantitative simulation, for simulation between weighted automata. While fair trace inclusion is PSPACE-complete, fair simulation can be computed in polynomial time. For weighted automata, the (quantitative) language inclusion problem is undecidable in general, whereas the (quantitative) simulation reduces to quantitative games, which admit pseudo-polynomial time algorithms.\r\n\r\nIn this work, we study (quantitative) simulation for weighted automata with Büchi acceptance conditions, i.e., we generalize fair simulation from non-weighted automata to weighted automata. We show that imposing Büchi acceptance conditions on weighted automata changes many fundamental properties of the simulation games, yet they still admit pseudo-polynomial time algorithms." article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Jan full_name: Otop, Jan id: 2FC5DA74-F248-11E8-B48F-1D18A9856A87 last_name: Otop - first_name: Yaron full_name: Velner, Yaron last_name: Velner citation: ama: Chatterjee K, Henzinger TA, Otop J, Velner Y. Quantitative fair simulation games. Information and Computation. 2017;254(2):143-166. doi:10.1016/j.ic.2016.10.006 apa: Chatterjee, K., Henzinger, T. A., Otop, J., & Velner, Y. (2017). Quantitative fair simulation games. Information and Computation. Elsevier. https://doi.org/10.1016/j.ic.2016.10.006 chicago: Chatterjee, Krishnendu, Thomas A Henzinger, Jan Otop, and Yaron Velner. “Quantitative Fair Simulation Games.” Information and Computation. Elsevier, 2017. https://doi.org/10.1016/j.ic.2016.10.006. ieee: K. Chatterjee, T. A. Henzinger, J. Otop, and Y. Velner, “Quantitative fair simulation games,” Information and Computation, vol. 254, no. 2. Elsevier, pp. 143–166, 2017. ista: Chatterjee K, Henzinger TA, Otop J, Velner Y. 2017. Quantitative fair simulation games. Information and Computation. 254(2), 143–166. mla: Chatterjee, Krishnendu, et al. “Quantitative Fair Simulation Games.” Information and Computation, vol. 254, no. 2, Elsevier, 2017, pp. 143–66, doi:10.1016/j.ic.2016.10.006. short: K. Chatterjee, T.A. Henzinger, J. Otop, Y. Velner, Information and Computation 254 (2017) 143–166. date_created: 2018-12-11T11:49:58Z date_published: 2017-06-01T00:00:00Z date_updated: 2023-09-20T12:07:48Z day: '01' department: - _id: KrCh - _id: ToHe doi: 10.1016/j.ic.2016.10.006 ec_funded: 1 external_id: isi: - '000402025600002' intvolume: ' 254' isi: 1 issue: '2' language: - iso: eng month: '06' oa_version: None page: 143 - 166 project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25EE3708-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '267989' name: Quantitative Reactive Modeling - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2587B514-B435-11E9-9278-68D0E5697425 name: Microsoft Research Faculty Fellowship publication: Information and Computation publication_status: published publisher: Elsevier publist_id: '6322' quality_controlled: '1' related_material: record: - id: '5428' relation: earlier_version status: public scopus_import: '1' status: public title: Quantitative fair simulation games type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 254 year: '2017' ... --- _id: '1011' abstract: - lang: eng text: Pushdown systems (PDSs) and recursive state machines (RSMs), which are linearly equivalent, are standard models for interprocedural analysis. Yet RSMs are more convenient as they (a) explicitly model function calls and returns, and (b) specify many natural parameters for algorithmic analysis, e.g., the number of entries and exits. We consider a general framework where RSM transitions are labeled from a semiring and path properties are algebraic with semiring operations, which can model, e.g., interprocedural reachability and dataflow analysis problems. Our main contributions are new algorithms for several fundamental problems. As compared to a direct translation of RSMs to PDSs and the best-known existing bounds of PDSs, our analysis algorithm improves the complexity for finite-height semirings (that subsumes reachability and standard dataflow properties). We further consider the problem of extracting distance values from the representation structures computed by our algorithm, and give efficient algorithms that distinguish the complexity of a one-time preprocessing from the complexity of each individual query. Another advantage of our algorithm is that our improvements carry over to the concurrent setting, where we improve the bestknown complexity for the context-bounded analysis of concurrent RSMs. Finally, we provide a prototype implementation that gives a significant speed-up on several benchmarks from the SLAM/SDV project. alternative_title: - LNCS article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Bernhard full_name: Kragl, Bernhard id: 320FC952-F248-11E8-B48F-1D18A9856A87 last_name: Kragl orcid: 0000-0001-7745-9117 - first_name: Samarth full_name: Mishra, Samarth last_name: Mishra - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 citation: ama: 'Chatterjee K, Kragl B, Mishra S, Pavlogiannis A. Faster algorithms for weighted recursive state machines. In: Yang H, ed. Vol 10201. Springer; 2017:287-313. doi:10.1007/978-3-662-54434-1_11' apa: 'Chatterjee, K., Kragl, B., Mishra, S., & Pavlogiannis, A. (2017). Faster algorithms for weighted recursive state machines. In H. Yang (Ed.) (Vol. 10201, pp. 287–313). Presented at the ESOP: European Symposium on Programming, Uppsala, Sweden: Springer. https://doi.org/10.1007/978-3-662-54434-1_11' chicago: Chatterjee, Krishnendu, Bernhard Kragl, Samarth Mishra, and Andreas Pavlogiannis. “Faster Algorithms for Weighted Recursive State Machines.” edited by Hongseok Yang, 10201:287–313. Springer, 2017. https://doi.org/10.1007/978-3-662-54434-1_11. ieee: 'K. Chatterjee, B. Kragl, S. Mishra, and A. Pavlogiannis, “Faster algorithms for weighted recursive state machines,” presented at the ESOP: European Symposium on Programming, Uppsala, Sweden, 2017, vol. 10201, pp. 287–313.' ista: 'Chatterjee K, Kragl B, Mishra S, Pavlogiannis A. 2017. Faster algorithms for weighted recursive state machines. ESOP: European Symposium on Programming, LNCS, vol. 10201, 287–313.' mla: Chatterjee, Krishnendu, et al. Faster Algorithms for Weighted Recursive State Machines. Edited by Hongseok Yang, vol. 10201, Springer, 2017, pp. 287–313, doi:10.1007/978-3-662-54434-1_11. short: K. Chatterjee, B. Kragl, S. Mishra, A. Pavlogiannis, in:, H. Yang (Ed.), Springer, 2017, pp. 287–313. conference: end_date: 2017-04-29 location: Uppsala, Sweden name: 'ESOP: European Symposium on Programming' start_date: 2017-04-22 date_created: 2018-12-11T11:49:41Z date_published: 2017-03-19T00:00:00Z date_updated: 2023-09-22T09:44:50Z day: '19' department: - _id: KrCh - _id: ToHe doi: 10.1007/978-3-662-54434-1_11 ec_funded: 1 editor: - first_name: Hongseok full_name: Yang, Hongseok last_name: Yang external_id: isi: - '000681702400011' intvolume: ' 10201' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1701.04914 month: '03' oa: 1 oa_version: Submitted Version page: 287 - 313 project: - _id: 25F5A88A-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11402-N23 name: Moderne Concurrency Paradigms - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: The Wittgenstein Prize - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication_identifier: issn: - '03029743' publication_status: published publisher: Springer publist_id: '6384' quality_controlled: '1' scopus_import: '1' status: public title: Faster algorithms for weighted recursive state machines type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 10201 year: '2017' ... --- _id: '1009' abstract: - lang: eng text: A standard objective in partially-observable Markov decision processes (POMDPs) is to find a policy that maximizes the expected discounted-sum payoff. However, such policies may still permit unlikely but highly undesirable outcomes, which is problematic especially in safety-critical applications. Recently, there has been a surge of interest in POMDPs where the goal is to maximize the probability to ensure that the payoff is at least a given threshold, but these approaches do not consider any optimization beyond satisfying this threshold constraint. In this work we go beyond both the “expectation” and “threshold” approaches and consider a “guaranteed payoff optimization (GPO)” problem for POMDPs, where we are given a threshold t and the objective is to find a policy σ such that a) each possible outcome of σ yields a discounted-sum payoff of at least t, and b) the expected discounted-sum payoff of σ is optimal (or near-optimal) among all policies satisfying a). We present a practical approach to tackle the GPO problem and evaluate it on standard POMDP benchmarks. acknowledgement: 'he research leading to these results was supported by the Austrian Science Fund (FWF) NFN Grant no. S11407-N23 (RiSE/SHiNE); two ERC Starting grants (279307: Graph Games, 279499: inVEST); the Vienna Science and Tech- nology Fund (WWTF) through project ICT15-003; and the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013) under REA grant agreement no. [291734].' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Petr full_name: Novotny, Petr id: 3CC3B868-F248-11E8-B48F-1D18A9856A87 last_name: Novotny - first_name: Guillermo full_name: Pérez, Guillermo last_name: Pérez - first_name: Jean full_name: Raskin, Jean last_name: Raskin - first_name: Djordje full_name: Zikelic, Djordje last_name: Zikelic citation: ama: 'Chatterjee K, Novotný P, Pérez G, Raskin J, Zikelic D. Optimizing expectation with guarantees in POMDPs. In: Proceedings of the 31st AAAI Conference on Artificial Intelligence. Vol 5. AAAI Press; 2017:3725-3732.' apa: 'Chatterjee, K., Novotný, P., Pérez, G., Raskin, J., & Zikelic, D. (2017). Optimizing expectation with guarantees in POMDPs. In Proceedings of the 31st AAAI Conference on Artificial Intelligence (Vol. 5, pp. 3725–3732). San Francisco, CA, United States: AAAI Press.' chicago: Chatterjee, Krishnendu, Petr Novotný, Guillermo Pérez, Jean Raskin, and Djordje Zikelic. “Optimizing Expectation with Guarantees in POMDPs.” In Proceedings of the 31st AAAI Conference on Artificial Intelligence, 5:3725–32. AAAI Press, 2017. ieee: K. Chatterjee, P. Novotný, G. Pérez, J. Raskin, and D. Zikelic, “Optimizing expectation with guarantees in POMDPs,” in Proceedings of the 31st AAAI Conference on Artificial Intelligence, San Francisco, CA, United States, 2017, vol. 5, pp. 3725–3732. ista: 'Chatterjee K, Novotný P, Pérez G, Raskin J, Zikelic D. 2017. Optimizing expectation with guarantees in POMDPs. Proceedings of the 31st AAAI Conference on Artificial Intelligence. AAAI: Conference on Artificial Intelligence vol. 5, 3725–3732.' mla: Chatterjee, Krishnendu, et al. “Optimizing Expectation with Guarantees in POMDPs.” Proceedings of the 31st AAAI Conference on Artificial Intelligence, vol. 5, AAAI Press, 2017, pp. 3725–32. short: K. Chatterjee, P. Novotný, G. Pérez, J. Raskin, D. Zikelic, in:, Proceedings of the 31st AAAI Conference on Artificial Intelligence, AAAI Press, 2017, pp. 3725–3732. conference: end_date: 2017-02-10 location: San Francisco, CA, United States name: 'AAAI: Conference on Artificial Intelligence' start_date: 2017-02-04 date_created: 2018-12-11T11:49:40Z date_published: 2017-01-01T00:00:00Z date_updated: 2023-09-22T09:46:41Z day: '01' department: - _id: KrCh ec_funded: 1 external_id: isi: - '000485630703107' intvolume: ' 5' isi: 1 language: - iso: eng main_file_link: - open_access: '1' url: http://www.aaai.org/ocs/index.php/AAAI/AAAI17/paper/download/14354/14092 month: '01' oa: 1 oa_version: Submitted Version page: 3725 - 3732 project: - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication: Proceedings of the 31st AAAI Conference on Artificial Intelligence publication_status: published publisher: AAAI Press publist_id: '6387' quality_controlled: '1' scopus_import: '1' status: public title: Optimizing expectation with guarantees in POMDPs type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 5 year: '2017' ... --- _id: '744' abstract: - lang: eng text: In evolutionary game theory interactions between individuals are often assumed obligatory. However, in many real-life situations, individuals can decide to opt out of an interaction depending on the information they have about the opponent. We consider a simple evolutionary game theoretic model to study such a scenario, where at each encounter between two individuals the type of the opponent (cooperator/defector) is known with some probability, and where each individual either accepts or opts out of the interaction. If the type of the opponent is unknown, a trustful individual accepts the interaction, whereas a suspicious individual opts out of the interaction. If either of the two individuals opt out both individuals remain without an interaction. We show that in the prisoners dilemma optional interactions along with suspicious behaviour facilitates the emergence of trustful cooperation. article_processing_charge: No article_type: original author: - first_name: Tadeas full_name: Priklopil, Tadeas id: 3C869AA0-F248-11E8-B48F-1D18A9856A87 last_name: Priklopil - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: Priklopil T, Chatterjee K, Nowak M. Optional interactions and suspicious behaviour facilitates trustful cooperation in prisoners dilemma. Journal of Theoretical Biology. 2017;433:64-72. doi:10.1016/j.jtbi.2017.08.025 apa: Priklopil, T., Chatterjee, K., & Nowak, M. (2017). Optional interactions and suspicious behaviour facilitates trustful cooperation in prisoners dilemma. Journal of Theoretical Biology. Elsevier. https://doi.org/10.1016/j.jtbi.2017.08.025 chicago: Priklopil, Tadeas, Krishnendu Chatterjee, and Martin Nowak. “Optional Interactions and Suspicious Behaviour Facilitates Trustful Cooperation in Prisoners Dilemma.” Journal of Theoretical Biology. Elsevier, 2017. https://doi.org/10.1016/j.jtbi.2017.08.025. ieee: T. Priklopil, K. Chatterjee, and M. Nowak, “Optional interactions and suspicious behaviour facilitates trustful cooperation in prisoners dilemma,” Journal of Theoretical Biology, vol. 433. Elsevier, pp. 64–72, 2017. ista: Priklopil T, Chatterjee K, Nowak M. 2017. Optional interactions and suspicious behaviour facilitates trustful cooperation in prisoners dilemma. Journal of Theoretical Biology. 433, 64–72. mla: Priklopil, Tadeas, et al. “Optional Interactions and Suspicious Behaviour Facilitates Trustful Cooperation in Prisoners Dilemma.” Journal of Theoretical Biology, vol. 433, Elsevier, 2017, pp. 64–72, doi:10.1016/j.jtbi.2017.08.025. short: T. Priklopil, K. Chatterjee, M. Nowak, Journal of Theoretical Biology 433 (2017) 64–72. date_created: 2018-12-11T11:48:16Z date_published: 2017-11-21T00:00:00Z date_updated: 2023-09-27T12:29:02Z day: '21' ddc: - '000' - '570' department: - _id: KrCh doi: 10.1016/j.jtbi.2017.08.025 ec_funded: 1 external_id: isi: - '000412039800007' pmid: - '28867224' file: - access_level: open_access checksum: 4b43af1615ebf1a861840cb03d8a320c content_type: application/pdf creator: dernst date_created: 2019-11-19T07:57:39Z date_updated: 2020-07-14T12:47:58Z file_id: '7047' file_name: 2017_JournTheoretBio_Priklopil.pdf file_size: 537323 relation: main_file file_date_updated: 2020-07-14T12:47:58Z has_accepted_license: '1' intvolume: ' 433' isi: 1 language: - iso: eng month: '11' oa: 1 oa_version: Submitted Version page: 64 - 72 pmid: 1 project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: ' Journal of Theoretical Biology' publication_identifier: issn: - '00225193' publication_status: published publisher: Elsevier publist_id: '6923' quality_controlled: '1' scopus_import: '1' status: public title: Optional interactions and suspicious behaviour facilitates trustful cooperation in prisoners dilemma tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 433 year: '2017' ... --- _id: '1194' abstract: - lang: eng text: 'Termination is one of the basic liveness properties, and we study the termination problem for probabilistic programs with real-valued variables. Previous works focused on the qualitative problem that asks whether an input program terminates with probability~1 (almost-sure termination). A powerful approach for this qualitative problem is the notion of ranking supermartingales with respect to a given set of invariants. The quantitative problem (probabilistic termination) asks for bounds on the termination probability. A fundamental and conceptual drawback of the existing approaches to address probabilistic termination is that even though the supermartingales consider the probabilistic behavior of the programs, the invariants are obtained completely ignoring the probabilistic aspect. In this work we address the probabilistic termination problem for linear-arithmetic probabilistic programs with nondeterminism. We define the notion of {\em stochastic invariants}, which are constraints along with a probability bound that the constraints hold. We introduce a concept of {\em repulsing supermartingales}. First, we show that repulsing supermartingales can be used to obtain bounds on the probability of the stochastic invariants. Second, we show the effectiveness of repulsing supermartingales in the following three ways: (1)~With a combination of ranking and repulsing supermartingales we can compute lower bounds on the probability of termination; (2)~repulsing supermartingales provide witnesses for refutation of almost-sure termination; and (3)~with a combination of ranking and repulsing supermartingales we can establish persistence properties of probabilistic programs. We also present results on related computational problems and an experimental evaluation of our approach on academic examples. ' alternative_title: - ACM SIGPLAN Notices article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Petr full_name: Novotny, Petr id: 3CC3B868-F248-11E8-B48F-1D18A9856A87 last_name: Novotny - first_name: Djordje full_name: Zikelic, Djordje last_name: Zikelic citation: ama: 'Chatterjee K, Novotný P, Zikelic D. Stochastic invariants for probabilistic termination. In: Vol 52. ACM; 2017:145-160. doi:10.1145/3009837.3009873' apa: 'Chatterjee, K., Novotný, P., & Zikelic, D. (2017). Stochastic invariants for probabilistic termination (Vol. 52, pp. 145–160). Presented at the POPL: Principles of Programming Languages, Paris, France: ACM. https://doi.org/10.1145/3009837.3009873' chicago: Chatterjee, Krishnendu, Petr Novotný, and Djordje Zikelic. “Stochastic Invariants for Probabilistic Termination,” 52:145–60. ACM, 2017. https://doi.org/10.1145/3009837.3009873. ieee: 'K. Chatterjee, P. Novotný, and D. Zikelic, “Stochastic invariants for probabilistic termination,” presented at the POPL: Principles of Programming Languages, Paris, France, 2017, vol. 52, no. 1, pp. 145–160.' ista: 'Chatterjee K, Novotný P, Zikelic D. 2017. Stochastic invariants for probabilistic termination. POPL: Principles of Programming Languages, ACM SIGPLAN Notices, vol. 52, 145–160.' mla: Chatterjee, Krishnendu, et al. Stochastic Invariants for Probabilistic Termination. Vol. 52, no. 1, ACM, 2017, pp. 145–60, doi:10.1145/3009837.3009873. short: K. Chatterjee, P. Novotný, D. Zikelic, in:, ACM, 2017, pp. 145–160. conference: end_date: 2017-01-21 location: Paris, France name: 'POPL: Principles of Programming Languages' start_date: 2017-01-15 date_created: 2018-12-11T11:50:39Z date_published: 2017-01-01T00:00:00Z date_updated: 2023-11-30T10:55:36Z day: '01' department: - _id: KrCh doi: 10.1145/3009837.3009873 ec_funded: 1 external_id: isi: - '000408311200013' intvolume: ' 52' isi: 1 issue: '1' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1611.01063 month: '01' oa: 1 oa_version: Submitted Version page: 145 - 160 project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25F5A88A-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11402-N23 name: Moderne Concurrency Paradigms - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication_identifier: issn: - '07308566' publication_status: published publisher: ACM publist_id: '6157' quality_controlled: '1' related_material: record: - id: '14539' relation: dissertation_contains status: public scopus_import: '1' status: public title: Stochastic invariants for probabilistic termination type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 52 year: '2017' ... --- _id: '5559' abstract: - lang: eng text: Strong amplifiers of natural selection article_processing_charge: No author: - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 - first_name: Josef full_name: Tkadlec, Josef id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87 last_name: Tkadlec orcid: 0000-0002-1097-9684 - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Nowak , Martin last_name: 'Nowak ' citation: ama: Pavlogiannis A, Tkadlec J, Chatterjee K, Nowak M. Strong amplifiers of natural selection. 2017. doi:10.15479/AT:ISTA:51 apa: Pavlogiannis, A., Tkadlec, J., Chatterjee, K., & Nowak , M. (2017). Strong amplifiers of natural selection. Institute of Science and Technology Austria. https://doi.org/10.15479/AT:ISTA:51 chicago: Pavlogiannis, Andreas, Josef Tkadlec, Krishnendu Chatterjee, and Martin Nowak . “Strong Amplifiers of Natural Selection.” Institute of Science and Technology Austria, 2017. https://doi.org/10.15479/AT:ISTA:51. ieee: A. Pavlogiannis, J. Tkadlec, K. Chatterjee, and M. Nowak , “Strong amplifiers of natural selection.” Institute of Science and Technology Austria, 2017. ista: Pavlogiannis A, Tkadlec J, Chatterjee K, Nowak M. 2017. Strong amplifiers of natural selection, Institute of Science and Technology Austria, 10.15479/AT:ISTA:51. mla: Pavlogiannis, Andreas, et al. Strong Amplifiers of Natural Selection. Institute of Science and Technology Austria, 2017, doi:10.15479/AT:ISTA:51. short: A. Pavlogiannis, J. Tkadlec, K. Chatterjee, M. Nowak , (2017). datarep_id: '51' date_created: 2018-12-12T12:31:32Z date_published: 2017-01-02T00:00:00Z date_updated: 2024-02-21T13:48:42Z day: '02' ddc: - '519' department: - _id: KrCh doi: 10.15479/AT:ISTA:51 ec_funded: 1 file: - access_level: open_access checksum: b427dd46a30096a1911b245640c47af8 content_type: video/mp4 creator: system date_created: 2018-12-12T13:05:18Z date_updated: 2020-07-14T12:47:02Z file_id: '5644' file_name: IST-2017-51-v1+2_illustration.mp4 file_size: 32987015 relation: main_file file_date_updated: 2020-07-14T12:47:02Z has_accepted_license: '1' keyword: - natural selection month: '01' oa: 1 oa_version: Published Version project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publisher: Institute of Science and Technology Austria related_material: record: - id: '5452' relation: research_paper status: public - id: '5751' relation: research_paper status: public status: public title: Strong amplifiers of natural selection type: research_data user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2017' ... --- _id: '639' abstract: - lang: eng text: We study the problem of developing efficient approaches for proving worst-case bounds of non-deterministic recursive programs. Ranking functions are sound and complete for proving termination and worst-case bounds of non-recursive programs. First, we apply ranking functions to recursion, resulting in measure functions, and show that they provide a sound and complete approach to prove worst-case bounds of non-deterministic recursive programs. Our second contribution is the synthesis of measure functions in non-polynomial forms. We show that non-polynomial measure functions with logarithm and exponentiation can be synthesized through abstraction of logarithmic or exponentiation terms, Farkas’ Lemma, and Handelman’s Theorem using linear programming. While previous methods obtain worst-case polynomial bounds, our approach can synthesize bounds of the form O(n log n) as well as O(nr) where r is not an integer. We present experimental results to demonstrate that our approach can efficiently obtain worst-case bounds of classical recursive algorithms such as Merge-Sort, Closest-Pair, Karatsuba’s algorithm and Strassen’s algorithm. alternative_title: - LNCS article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Hongfei full_name: Fu, Hongfei last_name: Fu - first_name: Amir full_name: Goharshady, Amir id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 citation: ama: 'Chatterjee K, Fu H, Goharshady AK. Non-polynomial worst case analysis of recursive programs. In: Majumdar R, Kunčak V, eds. Vol 10427. Springer; 2017:41-63. doi:10.1007/978-3-319-63390-9_3' apa: 'Chatterjee, K., Fu, H., & Goharshady, A. K. (2017). Non-polynomial worst case analysis of recursive programs. In R. Majumdar & V. Kunčak (Eds.) (Vol. 10427, pp. 41–63). Presented at the CAV: Computer Aided Verification, Heidelberg, Germany: Springer. https://doi.org/10.1007/978-3-319-63390-9_3' chicago: Chatterjee, Krishnendu, Hongfei Fu, and Amir Kafshdar Goharshady. “Non-Polynomial Worst Case Analysis of Recursive Programs.” edited by Rupak Majumdar and Viktor Kunčak, 10427:41–63. Springer, 2017. https://doi.org/10.1007/978-3-319-63390-9_3. ieee: 'K. Chatterjee, H. Fu, and A. K. Goharshady, “Non-polynomial worst case analysis of recursive programs,” presented at the CAV: Computer Aided Verification, Heidelberg, Germany, 2017, vol. 10427, pp. 41–63.' ista: 'Chatterjee K, Fu H, Goharshady AK. 2017. Non-polynomial worst case analysis of recursive programs. CAV: Computer Aided Verification, LNCS, vol. 10427, 41–63.' mla: Chatterjee, Krishnendu, et al. Non-Polynomial Worst Case Analysis of Recursive Programs. Edited by Rupak Majumdar and Viktor Kunčak, vol. 10427, Springer, 2017, pp. 41–63, doi:10.1007/978-3-319-63390-9_3. short: K. Chatterjee, H. Fu, A.K. Goharshady, in:, R. Majumdar, V. Kunčak (Eds.), Springer, 2017, pp. 41–63. conference: end_date: 2017-07-28 location: Heidelberg, Germany name: 'CAV: Computer Aided Verification' start_date: 2017-07-24 date_created: 2018-12-11T11:47:39Z date_published: 2017-01-01T00:00:00Z date_updated: 2024-03-28T23:30:33Z day: '01' department: - _id: KrCh doi: 10.1007/978-3-319-63390-9_3 ec_funded: 1 editor: - first_name: Rupak full_name: Majumdar, Rupak last_name: Majumdar - first_name: Viktor full_name: Kunčak, Viktor last_name: Kunčak external_id: arxiv: - '1705.00317' intvolume: ' 10427' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1705.00317 month: '01' oa: 1 oa_version: Submitted Version page: 41 - 63 project: - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication_identifier: isbn: - 978-331963389-3 publication_status: published publisher: Springer publist_id: '7149' quality_controlled: '1' related_material: record: - id: '7014' relation: later_version status: public - id: '8934' relation: dissertation_contains status: public scopus_import: 1 status: public title: Non-polynomial worst case analysis of recursive programs type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 10427 year: '2017' ... --- _id: '949' abstract: - lang: eng text: The notion of treewidth of graphs has been exploited for faster algorithms for several problems arising in verification and program analysis. Moreover, various notions of balanced tree decompositions have been used for improved algorithms supporting dynamic updates and analysis of concurrent programs. In this work, we present a tool for constructing tree-decompositions of CFGs obtained from Java methods, which is implemented as an extension to the widely used Soot framework. The experimental results show that our implementation on real-world Java benchmarks is very efficient. Our tool also provides the first implementation for balancing tree-decompositions. In summary, we present the first tool support for exploiting treewidth in the static analysis problems on Java programs. alternative_title: - LNCS article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Amir full_name: Goharshady, Amir id: 391365CE-F248-11E8-B48F-1D18A9856A87 last_name: Goharshady orcid: 0000-0003-1702-6584 - first_name: Andreas full_name: Pavlogiannis, Andreas id: 49704004-F248-11E8-B48F-1D18A9856A87 last_name: Pavlogiannis orcid: 0000-0002-8943-0722 citation: ama: 'Chatterjee K, Goharshady AK, Pavlogiannis A. JTDec: A tool for tree decompositions in soot. In: D’Souza D, ed. Vol 10482. Springer; 2017:59-66. doi:10.1007/978-3-319-68167-2_4' apa: 'Chatterjee, K., Goharshady, A. K., & Pavlogiannis, A. (2017). JTDec: A tool for tree decompositions in soot. In D. D’Souza (Ed.) (Vol. 10482, pp. 59–66). Presented at the ATVA: Automated Technology for Verification and Analysis, Pune, India: Springer. https://doi.org/10.1007/978-3-319-68167-2_4' chicago: 'Chatterjee, Krishnendu, Amir Kafshdar Goharshady, and Andreas Pavlogiannis. “JTDec: A Tool for Tree Decompositions in Soot.” edited by Deepak D’Souza, 10482:59–66. Springer, 2017. https://doi.org/10.1007/978-3-319-68167-2_4.' ieee: 'K. Chatterjee, A. K. Goharshady, and A. Pavlogiannis, “JTDec: A tool for tree decompositions in soot,” presented at the ATVA: Automated Technology for Verification and Analysis, Pune, India, 2017, vol. 10482, pp. 59–66.' ista: 'Chatterjee K, Goharshady AK, Pavlogiannis A. 2017. JTDec: A tool for tree decompositions in soot. ATVA: Automated Technology for Verification and Analysis, LNCS, vol. 10482, 59–66.' mla: 'Chatterjee, Krishnendu, et al. JTDec: A Tool for Tree Decompositions in Soot. Edited by Deepak D’Souza, vol. 10482, Springer, 2017, pp. 59–66, doi:10.1007/978-3-319-68167-2_4.' short: K. Chatterjee, A.K. Goharshady, A. Pavlogiannis, in:, D. D’Souza (Ed.), Springer, 2017, pp. 59–66. conference: end_date: 2017-10-06 location: Pune, India name: 'ATVA: Automated Technology for Verification and Analysis' start_date: 2017-10-03 date_created: 2018-12-11T11:49:22Z date_published: 2017-01-01T00:00:00Z date_updated: 2024-03-28T23:30:35Z day: '01' ddc: - '005' department: - _id: KrCh doi: 10.1007/978-3-319-68167-2_4 ec_funded: 1 editor: - first_name: Deepak full_name: D'Souza, Deepak last_name: D'Souza external_id: isi: - '000723567800004' file: - access_level: open_access checksum: a0d9f5f94dc594c4e71e78525c9942f1 content_type: application/pdf creator: system date_created: 2018-12-12T10:10:45Z date_updated: 2020-07-14T12:48:16Z file_id: '4835' file_name: IST-2017-845-v1+1_2017_Chatterjee_JTDec.pdf file_size: 948514 relation: main_file file_date_updated: 2020-07-14T12:48:16Z has_accepted_license: '1' intvolume: ' 10482' isi: 1 language: - iso: eng month: '01' oa: 1 oa_version: Submitted Version page: 59 - 66 project: - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication_identifier: issn: - '03029743' publication_status: published publisher: Springer publist_id: '6468' pubrep_id: '845' quality_controlled: '1' related_material: record: - id: '8934' relation: dissertation_contains status: public scopus_import: '1' status: public title: 'JTDec: A tool for tree decompositions in soot' type: conference user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1 volume: 10482 year: '2017' ... --- _id: '1068' abstract: - lang: eng text: 'Games on graphs provide the appropriate framework to study several central problems in computer science, such as verification and synthesis of reactive systems. One of the most basic objectives for games on graphs is the liveness (or Büchi) objective that given a target set of vertices requires that some vertex in the target set is visited infinitely often. We study generalized Büchi objectives (i.e., conjunction of liveness objectives), and implications between two generalized Büchi objectives (known as GR(1) objectives), that arise in numerous applications in computer-aided verification. We present improved algorithms and conditional super-linear lower bounds based on widely believed assumptions about the complexity of (A1) combinatorial Boolean matrix multiplication and (A2) CNF-SAT. We consider graph games with n vertices, m edges, and generalized Büchi objectives with k conjunctions. First, we present an algorithm with running time O(k*n^2), improving the previously known O(k*n*m) and O(k^2*n^2) worst-case bounds. Our algorithm is optimal for dense graphs under (A1). Second, we show that the basic algorithm for the problem is optimal for sparse graphs when the target sets have constant size under (A2). Finally, we consider GR(1) objectives, with k_1 conjunctions in the antecedent and k_2 conjunctions in the consequent, and present an O(k_1 k_2 n^{2.5})-time algorithm, improving the previously known O(k_1*k_2*n*m)-time algorithm for m > n^{1.5}. ' acknowledgement: K. C., M. H., and W. D. are partially supported by the Vienna Science and Technology Fund (WWTF) through project ICT15-003. K. C. is partially supported by the Austrian Science Fund (FWF) NFN Grant No S11407-N23 (RiSE/SHiNE) and an ERC Start grant (279307 alternative_title: - LIPIcs article_number: '25' article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Wolfgang full_name: Dvorák, Wolfgang last_name: Dvorák - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Veronika full_name: Loitzenbauer, Veronika last_name: Loitzenbauer citation: ama: 'Chatterjee K, Dvorák W, Henzinger MH, Loitzenbauer V. Conditionally optimal algorithms for generalized Büchi Games. In: Vol 58. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2016. doi:10.4230/LIPIcs.MFCS.2016.25' apa: 'Chatterjee, K., Dvorák, W., Henzinger, M. H., & Loitzenbauer, V. (2016). Conditionally optimal algorithms for generalized Büchi Games (Vol. 58). Presented at the MFCS: Mathematical Foundations of Computer Science (SG), Krakow, Poland: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.MFCS.2016.25' chicago: Chatterjee, Krishnendu, Wolfgang Dvorák, Monika H Henzinger, and Veronika Loitzenbauer. “Conditionally Optimal Algorithms for Generalized Büchi Games,” Vol. 58. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016. https://doi.org/10.4230/LIPIcs.MFCS.2016.25. ieee: 'K. Chatterjee, W. Dvorák, M. H. Henzinger, and V. Loitzenbauer, “Conditionally optimal algorithms for generalized Büchi Games,” presented at the MFCS: Mathematical Foundations of Computer Science (SG), Krakow, Poland, 2016, vol. 58.' ista: 'Chatterjee K, Dvorák W, Henzinger MH, Loitzenbauer V. 2016. Conditionally optimal algorithms for generalized Büchi Games. MFCS: Mathematical Foundations of Computer Science (SG), LIPIcs, vol. 58, 25.' mla: Chatterjee, Krishnendu, et al. Conditionally Optimal Algorithms for Generalized Büchi Games. Vol. 58, 25, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016, doi:10.4230/LIPIcs.MFCS.2016.25. short: K. Chatterjee, W. Dvorák, M.H. Henzinger, V. Loitzenbauer, in:, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016. conference: end_date: 2016-08-26 location: Krakow, Poland name: 'MFCS: Mathematical Foundations of Computer Science (SG)' start_date: 2016-08-22 date_created: 2018-12-11T11:49:58Z date_published: 2016-08-01T00:00:00Z date_updated: 2023-02-14T10:11:07Z day: '01' ddc: - '000' - '004' - '006' department: - _id: KrCh doi: 10.4230/LIPIcs.MFCS.2016.25 ec_funded: 1 file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:16:02Z date_updated: 2018-12-12T10:16:02Z file_id: '5187' file_name: IST-2017-779-v1+1_LIPIcs-MFCS-2016-25.pdf file_size: 632786 relation: main_file file_date_updated: 2018-12-12T10:16:02Z has_accepted_license: '1' intvolume: ' 58' language: - iso: eng month: '08' oa: 1 oa_version: Published Version project: - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik publist_id: '6317' pubrep_id: '779' quality_controlled: '1' scopus_import: '1' status: public title: Conditionally optimal algorithms for generalized Büchi Games tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/3.0/legalcode name: Creative Commons Attribution 3.0 Unported (CC BY 3.0) short: CC BY (3.0) type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 58 year: '2016' ... --- _id: '1069' abstract: - lang: eng text: "The Continuous Skolem Problem asks whether a real-valued function satisfying a linear differen-\r\ntial equation has a zero in a given interval of real numbers. This is a fundamental reachability\r\nproblem for continuous linear dynamical systems, such as linear hybrid automata and continuous-\r\ntime Markov chains. Decidability of the problem is currently open – indeed decidability is open\r\neven for the sub-problem in which a zero is sought in a bounded interval. In this paper we show\r\ndecidability of the bounded problem subject to Schanuel’s Conjecture, a unifying conjecture in\r\ntranscendental number theory. We furthermore analyse the unbounded problem in terms of the\r\nfrequencies of the differential equation, that is, the imaginary parts of the characteristic roots.\r\nWe show that the unbounded problem can be reduced to the bounded problem if there is at most\r\none rationally linearly independent frequency, or if there are two rationally linearly independent\r\nfrequencies and all characteristic roots are simple. We complete the picture by showing that de-\r\ncidability of the unbounded problem in the case of two (or more) rationally linearly independent\r\nfrequencies would entail a major new effectiveness result in Diophantine approximation, namely\r\ncomputability of the Diophantine-approximation types of all real algebraic numbers." acknowledgement: 'Ventsislav Chonev is supported by Austrian Science Fund (FWF) NFN Grant No S11407-N23 (RiSE/SHiNE), ERC Start grant (279307: Graph Games), and ERC Advanced Grant (267989: QUAREM).' alternative_title: - LIPIcs article_number: '100' author: - first_name: Ventsislav K full_name: Chonev, Ventsislav K id: 36CBE2E6-F248-11E8-B48F-1D18A9856A87 last_name: Chonev - first_name: Joël full_name: Ouaknine, Joël last_name: Ouaknine - first_name: James full_name: Worrell, James last_name: Worrell citation: ama: 'Chonev VK, Ouaknine J, Worrell J. On the skolem problem for continuous linear dynamical systems. In: Vol 55. Schloss Dagstuhl- Leibniz-Zentrum fur Informatik; 2016. doi:10.4230/LIPIcs.ICALP.2016.100' apa: 'Chonev, V. K., Ouaknine, J., & Worrell, J. (2016). On the skolem problem for continuous linear dynamical systems (Vol. 55). Presented at the ICALP: Automata, Languages and Programming, Rome, Italy: Schloss Dagstuhl- Leibniz-Zentrum fur Informatik. https://doi.org/10.4230/LIPIcs.ICALP.2016.100' chicago: Chonev, Ventsislav K, Joël Ouaknine, and James Worrell. “On the Skolem Problem for Continuous Linear Dynamical Systems,” Vol. 55. Schloss Dagstuhl- Leibniz-Zentrum fur Informatik, 2016. https://doi.org/10.4230/LIPIcs.ICALP.2016.100. ieee: 'V. K. Chonev, J. Ouaknine, and J. Worrell, “On the skolem problem for continuous linear dynamical systems,” presented at the ICALP: Automata, Languages and Programming, Rome, Italy, 2016, vol. 55.' ista: 'Chonev VK, Ouaknine J, Worrell J. 2016. On the skolem problem for continuous linear dynamical systems. ICALP: Automata, Languages and Programming, LIPIcs, vol. 55, 100.' mla: Chonev, Ventsislav K., et al. On the Skolem Problem for Continuous Linear Dynamical Systems. Vol. 55, 100, Schloss Dagstuhl- Leibniz-Zentrum fur Informatik, 2016, doi:10.4230/LIPIcs.ICALP.2016.100. short: V.K. Chonev, J. Ouaknine, J. Worrell, in:, Schloss Dagstuhl- Leibniz-Zentrum fur Informatik, 2016. conference: end_date: 2016-07-15 location: Rome, Italy name: 'ICALP: Automata, Languages and Programming' start_date: 2016-07-12 date_created: 2018-12-11T11:49:59Z date_published: 2016-08-01T00:00:00Z date_updated: 2021-01-12T06:48:03Z day: '01' ddc: - '004' - '006' department: - _id: KrCh doi: 10.4230/LIPIcs.ICALP.2016.100 ec_funded: 1 file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:16:26Z date_updated: 2018-12-12T10:16:26Z file_id: '5213' file_name: IST-2017-778-v1+1_LIPIcs-ICALP-2016-100.pdf file_size: 521415 relation: main_file file_date_updated: 2018-12-12T10:16:26Z has_accepted_license: '1' intvolume: ' 55' language: - iso: eng month: '08' oa: 1 oa_version: Published Version project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25EE3708-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '267989' name: Quantitative Reactive Modeling publication_status: published publisher: Schloss Dagstuhl- Leibniz-Zentrum fur Informatik publist_id: '6314' pubrep_id: '778' quality_controlled: '1' scopus_import: 1 status: public title: On the skolem problem for continuous linear dynamical systems tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 55 year: '2016' ... --- _id: '1070' abstract: - lang: eng text: 'We present a logic that extends CTL (Computation Tree Logic) with operators that express synchronization properties. A property is synchronized in a system if it holds in all paths of a certain length. The new logic is obtained by using the same path quantifiers and temporal operators as in CTL, but allowing a different order of the quantifiers. This small syntactic variation induces a logic that can express non-regular properties for which known extensions of MSO with equality of path length are undecidable. We show that our variant of CTL is decidable and that the model-checking problem is in Delta_3^P = P^{NP^NP}, and is DP-hard. We analogously consider quantifier exchange in extensions of CTL, and we present operators defined using basic operators of CTL* that express the occurrence of infinitely many synchronization points. We show that the model-checking problem remains in Delta_3^P. The distinguishing power of CTL and of our new logic coincide if the Next operator is allowed in the logics, thus the classical bisimulation quotient can be used for state-space reduction before model checking. ' acknowledgement: "This research was partially supported by Austrian Science Fund (FWF) NFN Grant No S11407-N23 (RiSE/SHiNE), ERC Start grant (279307: Graph Games), Vienna Science and Technology Fund (WWTF) through project ICT15-003, and European project Cassting (FP7-601148).\r\n\r\nWe thank Stefan Göller and anonymous reviewers for their insightful\r\ncomments and suggestions.\r\n" alternative_title: - LIPIcs article_number: '98' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Laurent full_name: Doyen, Laurent last_name: Doyen citation: ama: 'Chatterjee K, Doyen L. Computation tree logic for synchronization properties. In: Vol 55. Schloss Dagstuhl- Leibniz-Zentrum fur Informatik; 2016. doi:10.4230/LIPIcs.ICALP.2016.98' apa: 'Chatterjee, K., & Doyen, L. (2016). Computation tree logic for synchronization properties (Vol. 55). Presented at the ICALP: Automata, Languages and Programming, Rome, Italy: Schloss Dagstuhl- Leibniz-Zentrum fur Informatik. https://doi.org/10.4230/LIPIcs.ICALP.2016.98' chicago: Chatterjee, Krishnendu, and Laurent Doyen. “Computation Tree Logic for Synchronization Properties,” Vol. 55. Schloss Dagstuhl- Leibniz-Zentrum fur Informatik, 2016. https://doi.org/10.4230/LIPIcs.ICALP.2016.98. ieee: 'K. Chatterjee and L. Doyen, “Computation tree logic for synchronization properties,” presented at the ICALP: Automata, Languages and Programming, Rome, Italy, 2016, vol. 55.' ista: 'Chatterjee K, Doyen L. 2016. Computation tree logic for synchronization properties. ICALP: Automata, Languages and Programming, LIPIcs, vol. 55, 98.' mla: Chatterjee, Krishnendu, and Laurent Doyen. Computation Tree Logic for Synchronization Properties. Vol. 55, 98, Schloss Dagstuhl- Leibniz-Zentrum fur Informatik, 2016, doi:10.4230/LIPIcs.ICALP.2016.98. short: K. Chatterjee, L. Doyen, in:, Schloss Dagstuhl- Leibniz-Zentrum fur Informatik, 2016. conference: end_date: 2016-07-15 location: Rome, Italy name: 'ICALP: Automata, Languages and Programming' start_date: 2016-07-12 date_created: 2018-12-11T11:49:59Z date_published: 2016-01-01T00:00:00Z date_updated: 2021-01-12T06:48:03Z day: '01' ddc: - '005' department: - _id: KrCh doi: 10.4230/LIPIcs.ICALP.2016.98 ec_funded: 1 file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:08:52Z date_updated: 2018-12-12T10:08:52Z file_id: '4714' file_name: IST-2017-812-v1+1_LIPIcs-ICALP-2016-98.pdf file_size: 546133 relation: main_file file_date_updated: 2018-12-12T10:08:52Z has_accepted_license: '1' intvolume: ' 55' language: - iso: eng month: '01' oa: 1 oa_version: Published Version project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication_status: published publisher: Schloss Dagstuhl- Leibniz-Zentrum fur Informatik publist_id: '6313' pubrep_id: '812' quality_controlled: '1' scopus_import: 1 status: public title: Computation tree logic for synchronization properties tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 55 year: '2016' ... --- _id: '1090' abstract: - lang: eng text: ' While weighted automata provide a natural framework to express quantitative properties, many basic properties like average response time cannot be expressed with weighted automata. Nested weighted automata extend weighted automata and consist of a master automaton and a set of slave automata that are invoked by the master automaton. Nested weighted automata are strictly more expressive than weighted automata (e.g., average response time can be expressed with nested weighted automata), but the basic decision questions have higher complexity (e.g., for deterministic automata, the emptiness question for nested weighted automata is PSPACE-hard, whereas the corresponding complexity for weighted automata is PTIME). We consider a natural subclass of nested weighted automata where at any point at most a bounded number k of slave automata can be active. We focus on automata whose master value function is the limit average. We show that these nested weighted automata with bounded width are strictly more expressive than weighted automata (e.g., average response time with no overlapping requests can be expressed with bound k=1, but not with non-nested weighted automata). We show that the complexity of the basic decision problems (i.e., emptiness and universality) for the subclass with k constant matches the complexity for weighted automata. Moreover, when k is part of the input given in unary we establish PSPACE-completeness.' acknowledgement: "This research was supported in part by the Austrian Science Fund (FWF) under grants S11402-N23\r\n(RiSE/SHiNE) and Z211-N23 (Wittgenstein Award), ERC Start grant (279307: Graph Games), Vienna\r\nScience and Technology Fund (WWTF) through project ICT15-003 and by the National Science Centre\r\n(NCN), Poland under grant 2014/15/D/ST6/04543." alternative_title: - LIPIcs article_number: '24' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Jan full_name: Otop, Jan id: 2FC5DA74-F248-11E8-B48F-1D18A9856A87 last_name: Otop citation: ama: 'Chatterjee K, Henzinger TA, Otop J. Nested weighted limit-average automata of bounded width. In: Vol 58. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2016. doi:10.4230/LIPIcs.MFCS.2016.24' apa: 'Chatterjee, K., Henzinger, T. A., & Otop, J. (2016). Nested weighted limit-average automata of bounded width (Vol. 58). Presented at the MFCS: Mathematical Foundations of Computer Science (SG), Krakow; Poland: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.MFCS.2016.24' chicago: Chatterjee, Krishnendu, Thomas A Henzinger, and Jan Otop. “Nested Weighted Limit-Average Automata of Bounded Width,” Vol. 58. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016. https://doi.org/10.4230/LIPIcs.MFCS.2016.24. ieee: 'K. Chatterjee, T. A. Henzinger, and J. Otop, “Nested weighted limit-average automata of bounded width,” presented at the MFCS: Mathematical Foundations of Computer Science (SG), Krakow; Poland, 2016, vol. 58.' ista: 'Chatterjee K, Henzinger TA, Otop J. 2016. Nested weighted limit-average automata of bounded width. MFCS: Mathematical Foundations of Computer Science (SG), LIPIcs, vol. 58, 24.' mla: Chatterjee, Krishnendu, et al. Nested Weighted Limit-Average Automata of Bounded Width. Vol. 58, 24, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016, doi:10.4230/LIPIcs.MFCS.2016.24. short: K. Chatterjee, T.A. Henzinger, J. Otop, in:, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016. conference: end_date: 2016-08-26 location: Krakow; Poland name: 'MFCS: Mathematical Foundations of Computer Science (SG)' start_date: 2016-08-22 date_created: 2018-12-11T11:50:05Z date_published: 2016-08-01T00:00:00Z date_updated: 2021-01-12T06:48:12Z day: '01' ddc: - '004' department: - _id: KrCh - _id: ToHe doi: 10.4230/LIPIcs.MFCS.2016.24 ec_funded: 1 file: - access_level: open_access content_type: application/pdf creator: system date_created: 2018-12-12T10:17:31Z date_updated: 2018-12-12T10:17:31Z file_id: '5286' file_name: IST-2017-795-v1+1_LIPIcs-MFCS-2016-24.pdf file_size: 564560 relation: main_file file_date_updated: 2018-12-12T10:17:31Z has_accepted_license: '1' intvolume: ' 58' language: - iso: eng month: '08' oa: 1 oa_version: Published Version project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: The Wittgenstein Prize - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik publist_id: '6286' pubrep_id: '795' quality_controlled: '1' scopus_import: 1 status: public title: Nested weighted limit-average automata of bounded width tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 58 year: '2016' ... --- _id: '1138' abstract: - lang: eng text: Automata with monitor counters, where the transitions do not depend on counter values, and nested weighted automata are two expressive automata-theoretic frameworks for quantitative properties. For a well-studied and wide class of quantitative functions, we establish that automata with monitor counters and nested weighted automata are equivalent. We study for the first time such quantitative automata under probabilistic semantics. We show that several problems that are undecidable for the classical questions of emptiness and universality become decidable under the probabilistic semantics. We present a complete picture of decidability for such automata, and even an almost-complete picture of computational complexity, for the probabilistic questions we consider. © 2016 ACM. acknowledgement: This research was funded in part by the European Research Council (ERC) under grant agreement 267989 (QUAREM), by the Austrian Science Fund (FWF) projects S11402-N23 (RiSE) and Z211-N23 (Wittgenstein Award), FWF Grant No P23499- N23, FWF NFN Grant No S114 author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Jan full_name: Otop, Jan id: 2FC5DA74-F248-11E8-B48F-1D18A9856A87 last_name: Otop citation: ama: 'Chatterjee K, Henzinger TA, Otop J. Quantitative automata under probabilistic semantics. In: Proceedings of the 31st Annual ACM/IEEE Symposium. IEEE; 2016:76-85. doi:10.1145/2933575.2933588' apa: 'Chatterjee, K., Henzinger, T. A., & Otop, J. (2016). Quantitative automata under probabilistic semantics. In Proceedings of the 31st Annual ACM/IEEE Symposium (pp. 76–85). New York, NY, USA: IEEE. https://doi.org/10.1145/2933575.2933588' chicago: Chatterjee, Krishnendu, Thomas A Henzinger, and Jan Otop. “Quantitative Automata under Probabilistic Semantics.” In Proceedings of the 31st Annual ACM/IEEE Symposium, 76–85. IEEE, 2016. https://doi.org/10.1145/2933575.2933588. ieee: K. Chatterjee, T. A. Henzinger, and J. Otop, “Quantitative automata under probabilistic semantics,” in Proceedings of the 31st Annual ACM/IEEE Symposium, New York, NY, USA, 2016, pp. 76–85. ista: 'Chatterjee K, Henzinger TA, Otop J. 2016. Quantitative automata under probabilistic semantics. Proceedings of the 31st Annual ACM/IEEE Symposium. LICS: Logic in Computer Science, 76–85.' mla: Chatterjee, Krishnendu, et al. “Quantitative Automata under Probabilistic Semantics.” Proceedings of the 31st Annual ACM/IEEE Symposium, IEEE, 2016, pp. 76–85, doi:10.1145/2933575.2933588. short: K. Chatterjee, T.A. Henzinger, J. Otop, in:, Proceedings of the 31st Annual ACM/IEEE Symposium, IEEE, 2016, pp. 76–85. conference: end_date: 2016-07-08 location: New York, NY, USA name: 'LICS: Logic in Computer Science' start_date: 2016-07-05 date_created: 2018-12-11T11:50:21Z date_published: 2016-07-05T00:00:00Z date_updated: 2021-01-12T06:48:34Z day: '05' department: - _id: KrCh - _id: ToHe doi: 10.1145/2933575.2933588 ec_funded: 1 external_id: arxiv: - '1604.06764' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1604.06764 month: '07' oa: 1 oa_version: Preprint page: 76 - 85 project: - _id: 25EE3708-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '267989' name: Quantitative Reactive Modeling - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: The Wittgenstein Prize - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication: Proceedings of the 31st Annual ACM/IEEE Symposium publication_status: published publisher: IEEE publist_id: '6220' quality_controlled: '1' scopus_import: 1 status: public title: Quantitative automata under probabilistic semantics type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2016' ... --- _id: '1140' abstract: - lang: eng text: 'Given a model of a system and an objective, the model-checking question asks whether the model satisfies the objective. We study polynomial-time problems in two classical models, graphs and Markov Decision Processes (MDPs), with respect to several fundamental -regular objectives, e.g., Rabin and Streett objectives. For many of these problems the best-known upper bounds are quadratic or cubic, yet no super-linear lower bounds are known. In this work our contributions are two-fold: First, we present several improved algorithms, and second, we present the first conditional super-linear lower bounds based on widely believed assumptions about the complexity of CNF-SAT and combinatorial Boolean matrix multiplication. A separation result for two models with respect to an objective means a conditional lower bound for one model that is strictly higher than the existing upper bound for the other model, and similarly for two objectives with respect to a model. Our results establish the following separation results: (1) A separation of models (graphs and MDPs) for disjunctive queries of reachability and Büchi objectives. (2) Two kinds of separations of objectives, both for graphs and MDPs, namely, (2a) the separation of dual objectives such as Streett/Rabin objectives, and (2b) the separation of conjunction and disjunction of multiple objectives of the same type such as safety, Büchi, and coBüchi. In summary, our results establish the first model and objective separation results for graphs and MDPs for various classical -regular objectives. Quite strikingly, we establish conditional lower bounds for the disjunction of objectives that are strictly higher than the existing upper bounds for the conjunction of the same objectives. © 2016 ACM.' acknowledgement: "K. C., M. H., and W. D. are partially supported by the \ Vienna\r\nScience and Technology Fund (WWTF) through project ICT15-003.\r\nK. C. is partially supported by the Austrian Science Fund (FWF)\r\nNFN Grant No S11407-N23 (RiSE/SHiNE) and an ERC Start grant\r\n(279307: Graph Games). For W. D., M. H., and V. L. the research\r\nleading to these results has received funding from the European\r\nResearch Council under the European Union’s Seventh Framework\r\nProgramme (FP/2007-2013) / ERC Grant Agreement no. 340506." alternative_title: - Proceedings Symposium on Logic in Computer Science article_processing_charge: No author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Wolfgang full_name: Dvoák, Wolfgang last_name: Dvoák - first_name: Monika H full_name: Henzinger, Monika H id: 540c9bbd-f2de-11ec-812d-d04a5be85630 last_name: Henzinger orcid: 0000-0002-5008-6530 - first_name: Veronika full_name: Loitzenbauer, Veronika last_name: Loitzenbauer citation: ama: 'Chatterjee K, Dvoák W, Henzinger MH, Loitzenbauer V. Model and objective separation with conditional lower bounds: disjunction is harder than conjunction. In: Proceedings of the 31st Annual ACM/IEEE Symposium on Logic in Computer Science. IEEE; 2016:197-206. doi:10.1145/2933575.2935304' apa: 'Chatterjee, K., Dvoák, W., Henzinger, M. H., & Loitzenbauer, V. (2016). Model and objective separation with conditional lower bounds: disjunction is harder than conjunction. In Proceedings of the 31st Annual ACM/IEEE Symposium on Logic in Computer Science (pp. 197–206). New York, NY, USA: IEEE. https://doi.org/10.1145/2933575.2935304' chicago: 'Chatterjee, Krishnendu, Wolfgang Dvoák, Monika H Henzinger, and Veronika Loitzenbauer. “Model and Objective Separation with Conditional Lower Bounds: Disjunction Is Harder than Conjunction.” In Proceedings of the 31st Annual ACM/IEEE Symposium on Logic in Computer Science, 197–206. IEEE, 2016. https://doi.org/10.1145/2933575.2935304.' ieee: 'K. Chatterjee, W. Dvoák, M. H. Henzinger, and V. Loitzenbauer, “Model and objective separation with conditional lower bounds: disjunction is harder than conjunction,” in Proceedings of the 31st Annual ACM/IEEE Symposium on Logic in Computer Science, New York, NY, USA, 2016, pp. 197–206.' ista: 'Chatterjee K, Dvoák W, Henzinger MH, Loitzenbauer V. 2016. Model and objective separation with conditional lower bounds: disjunction is harder than conjunction. Proceedings of the 31st Annual ACM/IEEE Symposium on Logic in Computer Science. LICS: Logic in Computer Science, Proceedings Symposium on Logic in Computer Science, , 197–206.' mla: 'Chatterjee, Krishnendu, et al. “Model and Objective Separation with Conditional Lower Bounds: Disjunction Is Harder than Conjunction.” Proceedings of the 31st Annual ACM/IEEE Symposium on Logic in Computer Science, IEEE, 2016, pp. 197–206, doi:10.1145/2933575.2935304.' short: K. Chatterjee, W. Dvoák, M.H. Henzinger, V. Loitzenbauer, in:, Proceedings of the 31st Annual ACM/IEEE Symposium on Logic in Computer Science, IEEE, 2016, pp. 197–206. conference: end_date: 2016-07-08 location: New York, NY, USA name: 'LICS: Logic in Computer Science' start_date: 2016-07-05 date_created: 2018-12-11T11:50:22Z date_published: 2016-07-05T00:00:00Z date_updated: 2022-09-09T11:46:17Z day: '05' department: - _id: KrCh doi: 10.1145/2933575.2935304 external_id: arxiv: - '1602.02670' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1602.02670 month: '07' oa: 1 oa_version: Preprint page: 197 - 206 project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication: Proceedings of the 31st Annual ACM/IEEE Symposium on Logic in Computer Science publication_status: published publisher: IEEE publist_id: '6219' quality_controlled: '1' scopus_import: '1' status: public title: 'Model and objective separation with conditional lower bounds: disjunction is harder than conjunction' type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2016' ... --- _id: '1182' abstract: - lang: eng text: 'Balanced knockout tournaments are ubiquitous in sports competitions and are also used in decisionmaking and elections. The traditional computational question, that asks to compute a draw (optimal draw) that maximizes the winning probability for a distinguished player, has received a lot of attention. Previous works consider the problem where the pairwise winning probabilities are known precisely, while we study how robust is the winning probability with respect to small errors in the pairwise winning probabilities. First, we present several illuminating examples to establish: (a) there exist deterministic tournaments (where the pairwise winning probabilities are 0 or 1) where one optimal draw is much more robust than the other; and (b) in general, there exist tournaments with slightly suboptimal draws that are more robust than all the optimal draws. The above examples motivate the study of the computational problem of robust draws that guarantee a specified winning probability. Second, we present a polynomial-time algorithm for approximating the robustness of a draw for sufficiently small errors in pairwise winning probabilities, and obtain that the stated computational problem is NP-complete. We also show that two natural cases of deterministic tournaments where the optimal draw could be computed in polynomial time also admit polynomial-time algorithms to compute robust optimal draws.' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 - first_name: Josef full_name: Tkadlec, Josef id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87 last_name: Tkadlec orcid: 0000-0002-1097-9684 citation: ama: 'Chatterjee K, Ibsen-Jensen R, Tkadlec J. Robust draws in balanced knockout tournaments. In: Vol 2016-January. AAAI Press; 2016:172-179.' apa: 'Chatterjee, K., Ibsen-Jensen, R., & Tkadlec, J. (2016). Robust draws in balanced knockout tournaments (Vol. 2016–January, pp. 172–179). Presented at the IJCAI: International Joint Conference on Artificial Intelligence, New York, NY, USA: AAAI Press.' chicago: Chatterjee, Krishnendu, Rasmus Ibsen-Jensen, and Josef Tkadlec. “Robust Draws in Balanced Knockout Tournaments,” 2016–January:172–79. AAAI Press, 2016. ieee: 'K. Chatterjee, R. Ibsen-Jensen, and J. Tkadlec, “Robust draws in balanced knockout tournaments,” presented at the IJCAI: International Joint Conference on Artificial Intelligence, New York, NY, USA, 2016, vol. 2016–January, pp. 172–179.' ista: 'Chatterjee K, Ibsen-Jensen R, Tkadlec J. 2016. Robust draws in balanced knockout tournaments. IJCAI: International Joint Conference on Artificial Intelligence vol. 2016–January, 172–179.' mla: Chatterjee, Krishnendu, et al. Robust Draws in Balanced Knockout Tournaments. Vol. 2016–January, AAAI Press, 2016, pp. 172–79. short: K. Chatterjee, R. Ibsen-Jensen, J. Tkadlec, in:, AAAI Press, 2016, pp. 172–179. conference: end_date: 2016-07-15 location: New York, NY, USA name: 'IJCAI: International Joint Conference on Artificial Intelligence' start_date: 2016-07-09 date_created: 2018-12-11T11:50:35Z date_published: 2016-01-01T00:00:00Z date_updated: 2023-02-21T10:04:26Z day: '01' department: - _id: KrCh ec_funded: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1604.05090v1 month: '01' oa: 1 oa_version: Preprint page: 172 - 179 project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25EE3708-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '267989' name: Quantitative Reactive Modeling publication_status: published publisher: AAAI Press publist_id: '6171' quality_controlled: '1' related_material: link: - relation: table_of_contents url: https://www.ijcai.org/proceedings/2016 scopus_import: 1 status: public title: Robust draws in balanced knockout tournaments type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 2016-January year: '2016' ... --- _id: '1200' acknowledgement: C.H. acknowledges generous support from the ISTFELLOW program. author: - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X - first_name: Arne full_name: Traulsen, Arne last_name: Traulsen citation: ama: 'Hilbe C, Traulsen A. Only the combination of mathematics and agent based simulations can leverage the full potential of evolutionary modeling: Comment on “Evolutionary game theory using agent-based methods” by C. Adami, J. Schossau and A. Hintze. Physics of Life Reviews. 2016;19:29-31. doi:10.1016/j.plrev.2016.10.004' apa: 'Hilbe, C., & Traulsen, A. (2016). Only the combination of mathematics and agent based simulations can leverage the full potential of evolutionary modeling: Comment on “Evolutionary game theory using agent-based methods” by C. Adami, J. Schossau and A. Hintze. Physics of Life Reviews. Elsevier. https://doi.org/10.1016/j.plrev.2016.10.004' chicago: 'Hilbe, Christian, and Arne Traulsen. “Only the Combination of Mathematics and Agent Based Simulations Can Leverage the Full Potential of Evolutionary Modeling: Comment on ‘Evolutionary Game Theory Using Agent-Based Methods’ by C. Adami, J. Schossau and A. Hintze.” Physics of Life Reviews. Elsevier, 2016. https://doi.org/10.1016/j.plrev.2016.10.004.' ieee: 'C. Hilbe and A. Traulsen, “Only the combination of mathematics and agent based simulations can leverage the full potential of evolutionary modeling: Comment on ‘Evolutionary game theory using agent-based methods’ by C. Adami, J. Schossau and A. Hintze,” Physics of Life Reviews, vol. 19. Elsevier, pp. 29–31, 2016.' ista: 'Hilbe C, Traulsen A. 2016. Only the combination of mathematics and agent based simulations can leverage the full potential of evolutionary modeling: Comment on “Evolutionary game theory using agent-based methods” by C. Adami, J. Schossau and A. Hintze. Physics of Life Reviews. 19, 29–31.' mla: 'Hilbe, Christian, and Arne Traulsen. “Only the Combination of Mathematics and Agent Based Simulations Can Leverage the Full Potential of Evolutionary Modeling: Comment on ‘Evolutionary Game Theory Using Agent-Based Methods’ by C. Adami, J. Schossau and A. Hintze.” Physics of Life Reviews, vol. 19, Elsevier, 2016, pp. 29–31, doi:10.1016/j.plrev.2016.10.004.' short: C. Hilbe, A. Traulsen, Physics of Life Reviews 19 (2016) 29–31. date_created: 2018-12-11T11:50:40Z date_published: 2016-12-01T00:00:00Z date_updated: 2021-01-12T06:49:03Z day: '01' ddc: - '530' department: - _id: KrCh doi: 10.1016/j.plrev.2016.10.004 ec_funded: 1 file: - access_level: open_access checksum: 95e6dc78278334b99dacbf8822509364 content_type: application/pdf creator: system date_created: 2018-12-12T10:11:02Z date_updated: 2020-07-14T12:44:39Z file_id: '4855' file_name: IST-2017-798-v1+1_comment_adami.pdf file_size: 171352 relation: main_file file_date_updated: 2020-07-14T12:44:39Z has_accepted_license: '1' intvolume: ' 19' language: - iso: eng month: '12' oa: 1 oa_version: Submitted Version page: 29 - 31 project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication: Physics of Life Reviews publication_status: published publisher: Elsevier publist_id: '6150' pubrep_id: '798' quality_controlled: '1' scopus_import: 1 status: public title: 'Only the combination of mathematics and agent based simulations can leverage the full potential of evolutionary modeling: Comment on “Evolutionary game theory using agent-based methods” by C. Adami, J. Schossau and A. Hintze' tmp: image: /images/cc_by_nc_nd.png legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) short: CC BY-NC-ND (4.0) type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 19 year: '2016' ... --- _id: '1245' abstract: - lang: eng text: 'To facilitate collaboration in massive online classrooms, instructors must make many decisions. For instance, the following parameters need to be decided when designing a peer-feedback system where students review each others'' essays: the number of students each student must provide feedback to, an algorithm to map feedback providers to receivers, constraints that ensure students do not become free-riders (receiving feedback but not providing it), the best times to receive feedback to improve learning etc. While instructors can answer these questions by running experiments or invoking past experience, game-theoretic models with data from online learning platforms can identify better initial designs for further improvements. As an example, we explore the design space of a peer feedback system by modeling it using game theory. Our simulations show that incentivizing students to provide feedback requires the value obtained from receiving a feedback to exceed the cost of providing it by a large factor (greater than 7). Furthermore, hiding feedback from low-effort students incentivizes them to provide more feedback.' acknowledgement: 'ERC Start Grant Graph Games 279307 supported this research. ' author: - first_name: Vineet full_name: Pandey, Vineet last_name: Pandey - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X citation: ama: 'Pandey V, Chatterjee K. Game-theoretic models identify useful principles for peer collaboration in online learning platforms. In: Proceedings of the ACM Conference on Computer Supported Cooperative Work. Vol 26. ACM; 2016:365-368. doi:10.1145/2818052.2869122' apa: 'Pandey, V., & Chatterjee, K. (2016). Game-theoretic models identify useful principles for peer collaboration in online learning platforms. In Proceedings of the ACM Conference on Computer Supported Cooperative Work (Vol. 26, pp. 365–368). San Francisco, CA, USA: ACM. https://doi.org/10.1145/2818052.2869122' chicago: Pandey, Vineet, and Krishnendu Chatterjee. “Game-Theoretic Models Identify Useful Principles for Peer Collaboration in Online Learning Platforms.” In Proceedings of the ACM Conference on Computer Supported Cooperative Work, 26:365–68. ACM, 2016. https://doi.org/10.1145/2818052.2869122. ieee: V. Pandey and K. Chatterjee, “Game-theoretic models identify useful principles for peer collaboration in online learning platforms,” in Proceedings of the ACM Conference on Computer Supported Cooperative Work, San Francisco, CA, USA, 2016, vol. 26, no. Februar-2016, pp. 365–368. ista: 'Pandey V, Chatterjee K. 2016. Game-theoretic models identify useful principles for peer collaboration in online learning platforms. Proceedings of the ACM Conference on Computer Supported Cooperative Work. CSCW: Computer Supported Cooperative Work and Social Computing vol. 26, 365–368.' mla: Pandey, Vineet, and Krishnendu Chatterjee. “Game-Theoretic Models Identify Useful Principles for Peer Collaboration in Online Learning Platforms.” Proceedings of the ACM Conference on Computer Supported Cooperative Work, vol. 26, no. Februar-2016, ACM, 2016, pp. 365–68, doi:10.1145/2818052.2869122. short: V. Pandey, K. Chatterjee, in:, Proceedings of the ACM Conference on Computer Supported Cooperative Work, ACM, 2016, pp. 365–368. conference: end_date: 2016-03-02 location: San Francisco, CA, USA name: 'CSCW: Computer Supported Cooperative Work and Social Computing' start_date: 2016-02-26 date_created: 2018-12-11T11:50:55Z date_published: 2016-02-27T00:00:00Z date_updated: 2021-01-12T06:49:22Z day: '27' department: - _id: KrCh doi: 10.1145/2818052.2869122 ec_funded: 1 intvolume: ' 26' issue: Februar-2016 language: - iso: eng month: '02' oa_version: None page: 365 - 368 project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: Proceedings of the ACM Conference on Computer Supported Cooperative Work publication_status: published publisher: ACM publist_id: '6083' quality_controlled: '1' scopus_import: 1 status: public title: Game-theoretic models identify useful principles for peer collaboration in online learning platforms type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 26 year: '2016' ... --- _id: '1325' abstract: - lang: eng text: We study graphs and two-player games in which rewards are assigned to states, and the goal of the players is to satisfy or dissatisfy certain property of the generated outcome, given as a mean payoff property. Since the notion of mean-payoff does not reflect possible fluctuations from the mean-payoff along a run, we propose definitions and algorithms for capturing the stability of the system, and give algorithms for deciding if a given mean payoff and stability objective can be ensured in the system. acknowledgement: "The work has been supported by the Czech Science Foundation, grant No. 15-17564S, by EPSRC grant\r\nEP/M023656/1, and by the People Programme (Marie Curie Actions) of the European Union’s Seventh\r\nFramework Programme (FP7/2007-2013) under REA grant agreement no [291734]" alternative_title: - LIPIcs article_number: '10' author: - first_name: Tomáš full_name: Brázdil, Tomáš last_name: Brázdil - first_name: Vojtěch full_name: Forejt, Vojtěch last_name: Forejt - first_name: Antonín full_name: Kučera, Antonín last_name: Kučera - first_name: Petr full_name: Novotny, Petr id: 3CC3B868-F248-11E8-B48F-1D18A9856A87 last_name: Novotny citation: ama: 'Brázdil T, Forejt V, Kučera A, Novotný P. Stability in graphs and games. In: Vol 59. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2016. doi:10.4230/LIPIcs.CONCUR.2016.10' apa: 'Brázdil, T., Forejt, V., Kučera, A., & Novotný, P. (2016). Stability in graphs and games (Vol. 59). Presented at the CONCUR: Concurrency Theory, Quebec City, Canada: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.CONCUR.2016.10' chicago: Brázdil, Tomáš, Vojtěch Forejt, Antonín Kučera, and Petr Novotný. “Stability in Graphs and Games,” Vol. 59. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016. https://doi.org/10.4230/LIPIcs.CONCUR.2016.10. ieee: 'T. Brázdil, V. Forejt, A. Kučera, and P. Novotný, “Stability in graphs and games,” presented at the CONCUR: Concurrency Theory, Quebec City, Canada, 2016, vol. 59.' ista: 'Brázdil T, Forejt V, Kučera A, Novotný P. 2016. Stability in graphs and games. CONCUR: Concurrency Theory, LIPIcs, vol. 59, 10.' mla: Brázdil, Tomáš, et al. Stability in Graphs and Games. Vol. 59, 10, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016, doi:10.4230/LIPIcs.CONCUR.2016.10. short: T. Brázdil, V. Forejt, A. Kučera, P. Novotný, in:, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016. conference: end_date: 2016-08-26 location: Quebec City, Canada name: 'CONCUR: Concurrency Theory' start_date: 2016-08-23 date_created: 2018-12-11T11:51:23Z date_published: 2016-08-01T00:00:00Z date_updated: 2021-01-12T06:49:53Z day: '01' ddc: - '004' department: - _id: KrCh doi: 10.4230/LIPIcs.CONCUR.2016.10 ec_funded: 1 file: - access_level: open_access checksum: 3c2dc6ab0358f8aa8f7aa7d6c1293159 content_type: application/pdf creator: system date_created: 2018-12-12T10:16:40Z date_updated: 2020-07-14T12:44:44Z file_id: '5229' file_name: IST-2016-665-v1+1_Forejt_et_al__Stability_in_graphs_and_games.pdf file_size: 553648 relation: main_file file_date_updated: 2020-07-14T12:44:44Z has_accepted_license: '1' intvolume: ' 59' language: - iso: eng month: '08' oa: 1 oa_version: Published Version project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication_status: published publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik publist_id: '5944' pubrep_id: '665' quality_controlled: '1' scopus_import: 1 status: public title: Stability in graphs and games tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 59 year: '2016' ... --- _id: '1324' abstract: - lang: eng text: 'DEC-POMDPs extend POMDPs to a multi-agent setting, where several agents operate in an uncertain environment independently to achieve a joint objective. DEC-POMDPs have been studied with finite-horizon and infinite-horizon discounted-sum objectives, and there exist solvers both for exact and approximate solutions. In this work we consider Goal-DEC-POMDPs, where given a set of target states, the objective is to ensure that the target set is reached with minimal cost. We consider the indefinite-horizon (infinite-horizon with either discounted-sum, or undiscounted-sum, where absorbing goal states have zero-cost) problem. We present a new and novel method to solve the problem that extends methods for finite-horizon DEC-POMDPs and the RTDP-Bel approach for POMDPs. We present experimental results on several examples, and show that our approach presents promising results. Copyright ' author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Chmelik, Martin id: 3624234E-F248-11E8-B48F-1D18A9856A87 last_name: Chmelik citation: ama: 'Chatterjee K, Chmelik M. Indefinite-horizon reachability in Goal-DEC-POMDPs. In: Proceedings of the Twenty-Sixth International Conference on International Conference on Automated Planning and Scheduling. Vol 2016-January. AAAI Press; 2016:88-96.' apa: 'Chatterjee, K., & Chmelik, M. (2016). Indefinite-horizon reachability in Goal-DEC-POMDPs. In Proceedings of the Twenty-Sixth International Conference on International Conference on Automated Planning and Scheduling (Vol. 2016–January, pp. 88–96). London, United Kingdom: AAAI Press.' chicago: Chatterjee, Krishnendu, and Martin Chmelik. “Indefinite-Horizon Reachability in Goal-DEC-POMDPs.” In Proceedings of the Twenty-Sixth International Conference on International Conference on Automated Planning and Scheduling, 2016–January:88–96. AAAI Press, 2016. ieee: K. Chatterjee and M. Chmelik, “Indefinite-horizon reachability in Goal-DEC-POMDPs,” in Proceedings of the Twenty-Sixth International Conference on International Conference on Automated Planning and Scheduling, London, United Kingdom, 2016, vol. 2016–January, pp. 88–96. ista: 'Chatterjee K, Chmelik M. 2016. Indefinite-horizon reachability in Goal-DEC-POMDPs. Proceedings of the Twenty-Sixth International Conference on International Conference on Automated Planning and Scheduling. ICAPS: International Conference on Automated Planning and Scheduling vol. 2016–January, 88–96.' mla: Chatterjee, Krishnendu, and Martin Chmelik. “Indefinite-Horizon Reachability in Goal-DEC-POMDPs.” Proceedings of the Twenty-Sixth International Conference on International Conference on Automated Planning and Scheduling, vol. 2016–January, AAAI Press, 2016, pp. 88–96. short: K. Chatterjee, M. Chmelik, in:, Proceedings of the Twenty-Sixth International Conference on International Conference on Automated Planning and Scheduling, AAAI Press, 2016, pp. 88–96. conference: end_date: 2016-06-17 location: London, United Kingdom name: 'ICAPS: International Conference on Automated Planning and Scheduling' start_date: 2016-06-12 date_created: 2018-12-11T11:51:22Z date_published: 2016-01-01T00:00:00Z date_updated: 2021-01-12T06:49:53Z day: '01' department: - _id: KrCh ec_funded: 1 language: - iso: eng main_file_link: - url: http://www.aaai.org/ocs/index.php/ICAPS/ICAPS16/paper/view/12999 month: '01' oa_version: None page: 88 - 96 project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering publication: Proceedings of the Twenty-Sixth International Conference on International Conference on Automated Planning and Scheduling publication_status: published publisher: AAAI Press publist_id: '5946' quality_controlled: '1' scopus_import: 1 status: public title: Indefinite-horizon reachability in Goal-DEC-POMDPs type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 2016-January year: '2016' ... --- _id: '1327' abstract: - lang: eng text: 'We consider partially observable Markov decision processes (POMDPs) with a set of target states and positive integer costs associated with every transition. The traditional optimization objective (stochastic shortest path) asks to minimize the expected total cost until the target set is reached. We extend the traditional framework of POMDPs to model energy consumption, which represents a hard constraint. The energy levels may increase and decrease with transitions, and the hard constraint requires that the energy level must remain positive in all steps till the target is reached. First, we present a novel algorithm for solving POMDPs with energy levels, developing on existing POMDP solvers and using RTDP as its main method. Our second contribution is related to policy representation. For larger POMDP instances the policies computed by existing solvers are too large to be understandable. We present an automated procedure based on machine learning techniques that automatically extracts important decisions of the policy allowing us to compute succinct human readable policies. Finally, we show experimentally that our algorithm performs well and computes succinct policies on a number of POMDP instances from the literature that were naturally enhanced with energy levels. ' author: - first_name: Tomáš full_name: Brázdil, Tomáš last_name: Brázdil - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Chmelik, Martin id: 3624234E-F248-11E8-B48F-1D18A9856A87 last_name: Chmelik - first_name: Anchit full_name: Gupta, Anchit last_name: Gupta - first_name: Petr full_name: Novotny, Petr id: 3CC3B868-F248-11E8-B48F-1D18A9856A87 last_name: Novotny citation: ama: 'Brázdil T, Chatterjee K, Chmelik M, Gupta A, Novotný P. Stochastic shortest path with energy constraints in POMDPs. In: Proceedings of the 15th International Conference on Autonomous Agents and Multiagent Systems. ACM; 2016:1465-1466.' apa: 'Brázdil, T., Chatterjee, K., Chmelik, M., Gupta, A., & Novotný, P. (2016). Stochastic shortest path with energy constraints in POMDPs. In Proceedings of the 15th International Conference on Autonomous Agents and Multiagent Systems (pp. 1465–1466). Singapore: ACM.' chicago: Brázdil, Tomáš, Krishnendu Chatterjee, Martin Chmelik, Anchit Gupta, and Petr Novotný. “Stochastic Shortest Path with Energy Constraints in POMDPs.” In Proceedings of the 15th International Conference on Autonomous Agents and Multiagent Systems, 1465–66. ACM, 2016. ieee: T. Brázdil, K. Chatterjee, M. Chmelik, A. Gupta, and P. Novotný, “Stochastic shortest path with energy constraints in POMDPs,” in Proceedings of the 15th International Conference on Autonomous Agents and Multiagent Systems, Singapore, 2016, pp. 1465–1466. ista: 'Brázdil T, Chatterjee K, Chmelik M, Gupta A, Novotný P. 2016. Stochastic shortest path with energy constraints in POMDPs. Proceedings of the 15th International Conference on Autonomous Agents and Multiagent Systems. AAMAS: Autonomous Agents & Multiagent Systems, 1465–1466.' mla: Brázdil, Tomáš, et al. “Stochastic Shortest Path with Energy Constraints in POMDPs.” Proceedings of the 15th International Conference on Autonomous Agents and Multiagent Systems, ACM, 2016, pp. 1465–66. short: T. Brázdil, K. Chatterjee, M. Chmelik, A. Gupta, P. Novotný, in:, Proceedings of the 15th International Conference on Autonomous Agents and Multiagent Systems, ACM, 2016, pp. 1465–1466. conference: end_date: 2016-05-13 location: Singapore name: 'AAMAS: Autonomous Agents & Multiagent Systems' start_date: 2016-05-09 date_created: 2018-12-11T11:51:23Z date_published: 2016-01-01T00:00:00Z date_updated: 2021-01-12T06:49:54Z day: '01' department: - _id: KrCh ec_funded: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1602.07565 month: '01' oa: 1 oa_version: Preprint page: 1465 - 1466 project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication: Proceedings of the 15th International Conference on Autonomous Agents and Multiagent Systems publication_status: published publisher: ACM publist_id: '5942' quality_controlled: '1' scopus_import: 1 status: public title: Stochastic shortest path with energy constraints in POMDPs type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 year: '2016' ... --- _id: '1326' abstract: - lang: eng text: 'Energy Markov Decision Processes (EMDPs) are finite-state Markov decision processes where each transition is assigned an integer counter update and a rational payoff. An EMDP configuration is a pair s(n), where s is a control state and n is the current counter value. The configurations are changed by performing transitions in the standard way. We consider the problem of computing a safe strategy (i.e., a strategy that keeps the counter non-negative) which maximizes the expected mean payoff. ' acknowledgement: The research was funded by the Czech Science Foundation Grant No. P202/12/G061 and by the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013) under REA grant agreement no [291734]. alternative_title: - LNCS author: - first_name: Tomáš full_name: Brázdil, Tomáš last_name: Brázdil - first_name: Antonín full_name: Kučera, Antonín last_name: Kučera - first_name: Petr full_name: Novotny, Petr id: 3CC3B868-F248-11E8-B48F-1D18A9856A87 last_name: Novotny citation: ama: 'Brázdil T, Kučera A, Novotný P. Optimizing the expected mean payoff in Energy Markov Decision Processes. In: Vol 9938. Springer; 2016:32-49. doi:10.1007/978-3-319-46520-3_3' apa: 'Brázdil, T., Kučera, A., & Novotný, P. (2016). Optimizing the expected mean payoff in Energy Markov Decision Processes (Vol. 9938, pp. 32–49). Presented at the ATVA: Automated Technology for Verification and Analysis, Chiba, Japan: Springer. https://doi.org/10.1007/978-3-319-46520-3_3' chicago: Brázdil, Tomáš, Antonín Kučera, and Petr Novotný. “Optimizing the Expected Mean Payoff in Energy Markov Decision Processes,” 9938:32–49. Springer, 2016. https://doi.org/10.1007/978-3-319-46520-3_3. ieee: 'T. Brázdil, A. Kučera, and P. Novotný, “Optimizing the expected mean payoff in Energy Markov Decision Processes,” presented at the ATVA: Automated Technology for Verification and Analysis, Chiba, Japan, 2016, vol. 9938, pp. 32–49.' ista: 'Brázdil T, Kučera A, Novotný P. 2016. Optimizing the expected mean payoff in Energy Markov Decision Processes. ATVA: Automated Technology for Verification and Analysis, LNCS, vol. 9938, 32–49.' mla: Brázdil, Tomáš, et al. Optimizing the Expected Mean Payoff in Energy Markov Decision Processes. Vol. 9938, Springer, 2016, pp. 32–49, doi:10.1007/978-3-319-46520-3_3. short: T. Brázdil, A. Kučera, P. Novotný, in:, Springer, 2016, pp. 32–49. conference: end_date: 2016-10-20 location: Chiba, Japan name: 'ATVA: Automated Technology for Verification and Analysis' start_date: 2016-10-17 date_created: 2018-12-11T11:51:23Z date_published: 2016-09-22T00:00:00Z date_updated: 2021-01-12T06:49:53Z day: '22' department: - _id: KrCh doi: 10.1007/978-3-319-46520-3_3 ec_funded: 1 intvolume: ' 9938' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1607.00678 month: '09' oa: 1 oa_version: Preprint page: 32 - 49 project: - _id: 25681D80-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '291734' name: International IST Postdoc Fellowship Programme publication_status: published publisher: Springer publist_id: '5943' quality_controlled: '1' scopus_import: 1 status: public title: Optimizing the expected mean payoff in Energy Markov Decision Processes type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 9938 year: '2016' ... --- _id: '1333' abstract: - lang: eng text: Social dilemmas force players to balance between personal and collective gain. In many dilemmas, such as elected governments negotiating climate-change mitigation measures, the decisions are made not by individual players but by their representatives. However, the behaviour of representatives in social dilemmas has not been investigated experimentally. Here inspired by the negotiations for greenhouse-gas emissions reductions, we experimentally study a collective-risk social dilemma that involves representatives deciding on behalf of their fellow group members. Representatives can be re-elected or voted out after each consecutive collective-risk game. Selfish players are preferentially elected and are hence found most frequently in the "representatives" treatment. Across all treatments, we identify the selfish players as extortioners. As predicted by our mathematical model, their steadfast strategies enforce cooperation from fair players who finally compensate almost completely the deficit caused by the extortionate co-players. Everybody gains, but the extortionate representatives and their groups gain the most. acknowledgement: We thank the students for participation; H.-J. Krambeck for writing the software for the game; H. Arndt, T. Bakker, L. Becks, H. Brendelberger, S. Dobler and T. Reusch for support; and the Max Planck Society for the Advancement of Science for funding. article_number: '10915' author: - first_name: Manfred full_name: Milinski, Manfred last_name: Milinski - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X - first_name: Dirk full_name: Semmann, Dirk last_name: Semmann - first_name: Ralf full_name: Sommerfeld, Ralf last_name: Sommerfeld - first_name: Jochem full_name: Marotzke, Jochem last_name: Marotzke citation: ama: Milinski M, Hilbe C, Semmann D, Sommerfeld R, Marotzke J. Humans choose representatives who enforce cooperation in social dilemmas through extortion. Nature Communications. 2016;7. doi:10.1038/ncomms10915 apa: Milinski, M., Hilbe, C., Semmann, D., Sommerfeld, R., & Marotzke, J. (2016). Humans choose representatives who enforce cooperation in social dilemmas through extortion. Nature Communications. Nature Publishing Group. https://doi.org/10.1038/ncomms10915 chicago: Milinski, Manfred, Christian Hilbe, Dirk Semmann, Ralf Sommerfeld, and Jochem Marotzke. “Humans Choose Representatives Who Enforce Cooperation in Social Dilemmas through Extortion.” Nature Communications. Nature Publishing Group, 2016. https://doi.org/10.1038/ncomms10915. ieee: M. Milinski, C. Hilbe, D. Semmann, R. Sommerfeld, and J. Marotzke, “Humans choose representatives who enforce cooperation in social dilemmas through extortion,” Nature Communications, vol. 7. Nature Publishing Group, 2016. ista: Milinski M, Hilbe C, Semmann D, Sommerfeld R, Marotzke J. 2016. Humans choose representatives who enforce cooperation in social dilemmas through extortion. Nature Communications. 7, 10915. mla: Milinski, Manfred, et al. “Humans Choose Representatives Who Enforce Cooperation in Social Dilemmas through Extortion.” Nature Communications, vol. 7, 10915, Nature Publishing Group, 2016, doi:10.1038/ncomms10915. short: M. Milinski, C. Hilbe, D. Semmann, R. Sommerfeld, J. Marotzke, Nature Communications 7 (2016). date_created: 2018-12-11T11:51:25Z date_published: 2016-03-07T00:00:00Z date_updated: 2021-01-12T06:49:57Z day: '07' ddc: - '519' - '530' - '599' department: - _id: KrCh doi: 10.1038/ncomms10915 file: - access_level: open_access checksum: 9ea0d7ce59a555a1cb8353d5559407cb content_type: application/pdf creator: system date_created: 2018-12-12T10:10:44Z date_updated: 2020-07-14T12:44:44Z file_id: '4834' file_name: IST-2016-661-v1+1_ncomms10915.pdf file_size: 1432577 relation: main_file file_date_updated: 2020-07-14T12:44:44Z has_accepted_license: '1' intvolume: ' 7' language: - iso: eng month: '03' oa: 1 oa_version: Published Version publication: Nature Communications publication_status: published publisher: Nature Publishing Group publist_id: '5935' pubrep_id: '661' quality_controlled: '1' scopus_import: 1 status: public title: Humans choose representatives who enforce cooperation in social dilemmas through extortion tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 7 year: '2016' ... --- _id: '1335' abstract: - lang: eng text: In this paper we review various automata-theoretic formalisms for expressing quantitative properties. We start with finite-state Boolean automata that express the traditional regular properties. We then consider weighted ω-automata that can measure the average density of events, which finite-state Boolean automata cannot. However, even weighted ω-automata cannot express basic performance properties like average response time. We finally consider two formalisms of weighted ω-automata with monitors, where the monitors are either (a) counters or (b) weighted automata themselves. We present a translation result to establish that these two formalisms are equivalent. Weighted ω-automata with monitors generalize weighted ω-automata, and can express average response time property. They present a natural, robust, and expressive framework for quantitative specifications, with important decidable properties. alternative_title: - LNCS author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Thomas A full_name: Henzinger, Thomas A id: 40876CD8-F248-11E8-B48F-1D18A9856A87 last_name: Henzinger orcid: 0000−0002−2985−7724 - first_name: Jan full_name: Otop, Jan id: 2FC5DA74-F248-11E8-B48F-1D18A9856A87 last_name: Otop citation: ama: 'Chatterjee K, Henzinger TA, Otop J. Quantitative monitor automata. In: Vol 9837. Springer; 2016:23-38. doi:10.1007/978-3-662-53413-7_2' apa: 'Chatterjee, K., Henzinger, T. A., & Otop, J. (2016). Quantitative monitor automata (Vol. 9837, pp. 23–38). Presented at the SAS: Static Analysis Symposium, Edinburgh, United Kingdom: Springer. https://doi.org/10.1007/978-3-662-53413-7_2' chicago: Chatterjee, Krishnendu, Thomas A Henzinger, and Jan Otop. “Quantitative Monitor Automata,” 9837:23–38. Springer, 2016. https://doi.org/10.1007/978-3-662-53413-7_2. ieee: 'K. Chatterjee, T. A. Henzinger, and J. Otop, “Quantitative monitor automata,” presented at the SAS: Static Analysis Symposium, Edinburgh, United Kingdom, 2016, vol. 9837, pp. 23–38.' ista: 'Chatterjee K, Henzinger TA, Otop J. 2016. Quantitative monitor automata. SAS: Static Analysis Symposium, LNCS, vol. 9837, 23–38.' mla: Chatterjee, Krishnendu, et al. Quantitative Monitor Automata. Vol. 9837, Springer, 2016, pp. 23–38, doi:10.1007/978-3-662-53413-7_2. short: K. Chatterjee, T.A. Henzinger, J. Otop, in:, Springer, 2016, pp. 23–38. conference: end_date: 2016-09-10 location: Edinburgh, United Kingdom name: 'SAS: Static Analysis Symposium' start_date: 2016-09-08 date_created: 2018-12-11T11:51:26Z date_published: 2016-08-31T00:00:00Z date_updated: 2021-01-12T06:49:58Z day: '31' department: - _id: KrCh - _id: ToHe doi: 10.1007/978-3-662-53413-7_2 ec_funded: 1 intvolume: ' 9837' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1604.06764 month: '08' oa: 1 oa_version: Preprint page: 23 - 38 project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25F42A32-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: Z211 name: The Wittgenstein Prize - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication_status: published publisher: Springer publist_id: '5932' quality_controlled: '1' scopus_import: 1 status: public title: Quantitative monitor automata type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 9837 year: '2016' ... --- _id: '1340' abstract: - lang: eng text: We study repeated games with absorbing states, a type of two-player, zero-sum concurrent mean-payoff games with the prototypical example being the Big Match of Gillete (1957). These games may not allow optimal strategies but they always have ε-optimal strategies. In this paper we design ε-optimal strategies for Player 1 in these games that use only O(log log T) space. Furthermore, we construct strategies for Player 1 that use space s(T), for an arbitrary small unbounded non-decreasing function s, and which guarantee an ε-optimal value for Player 1 in the limit superior sense. The previously known strategies use space Ω(log T) and it was known that no strategy can use constant space if it is ε-optimal even in the limit superior sense. We also give a complementary lower bound. Furthermore, we also show that no Markov strategy, even extended with finite memory, can ensure value greater than 0 in the Big Match, answering a question posed by Neyman [11]. alternative_title: - LNCS author: - first_name: Kristoffer full_name: Hansen, Kristoffer last_name: Hansen - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 - first_name: Michal full_name: Koucký, Michal last_name: Koucký citation: ama: 'Hansen K, Ibsen-Jensen R, Koucký M. The big match in small space. In: Vol 9928. Springer; 2016:64-76. doi:10.1007/978-3-662-53354-3_6' apa: 'Hansen, K., Ibsen-Jensen, R., & Koucký, M. (2016). The big match in small space (Vol. 9928, pp. 64–76). Presented at the SAGT: Symposium on Algorithmic Game Theory, Liverpool, United Kingdom: Springer. https://doi.org/10.1007/978-3-662-53354-3_6' chicago: Hansen, Kristoffer, Rasmus Ibsen-Jensen, and Michal Koucký. “The Big Match in Small Space,” 9928:64–76. Springer, 2016. https://doi.org/10.1007/978-3-662-53354-3_6. ieee: 'K. Hansen, R. Ibsen-Jensen, and M. Koucký, “The big match in small space,” presented at the SAGT: Symposium on Algorithmic Game Theory, Liverpool, United Kingdom, 2016, vol. 9928, pp. 64–76.' ista: 'Hansen K, Ibsen-Jensen R, Koucký M. 2016. The big match in small space. SAGT: Symposium on Algorithmic Game Theory, LNCS, vol. 9928, 64–76.' mla: Hansen, Kristoffer, et al. The Big Match in Small Space. Vol. 9928, Springer, 2016, pp. 64–76, doi:10.1007/978-3-662-53354-3_6. short: K. Hansen, R. Ibsen-Jensen, M. Koucký, in:, Springer, 2016, pp. 64–76. conference: end_date: 2016-09-21 location: Liverpool, United Kingdom name: 'SAGT: Symposium on Algorithmic Game Theory' start_date: 2016-09-19 date_created: 2018-12-11T11:51:28Z date_published: 2016-09-01T00:00:00Z date_updated: 2021-01-12T06:50:00Z day: '01' department: - _id: KrCh doi: 10.1007/978-3-662-53354-3_6 ec_funded: 1 intvolume: ' 9928' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1604.07634 month: '09' oa: 1 oa_version: Preprint page: 64 - 76 project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' publication_status: published publisher: Springer publist_id: '5927' quality_controlled: '1' scopus_import: 1 status: public title: The big match in small space type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 9928 year: '2016' ... --- _id: '1380' abstract: - lang: eng text: We consider higher-dimensional versions of Kannan and Lipton's Orbit Problem - determining whether a target vector space V may be reached from a starting point x under repeated applications of a linear transformation A. Answering two questions posed by Kannan and Lipton in the 1980s, we show that when V has dimension one, this problem is solvable in polynomial time, and when V has dimension two or three, the problem is in NPRP. article_number: '23' author: - first_name: Ventsislav K full_name: Chonev, Ventsislav K id: 36CBE2E6-F248-11E8-B48F-1D18A9856A87 last_name: Chonev - first_name: Joël full_name: Ouaknine, Joël last_name: Ouaknine - first_name: James full_name: Worrell, James last_name: Worrell citation: ama: Chonev VK, Ouaknine J, Worrell J. On the complexity of the orbit problem. Journal of the ACM. 2016;63(3). doi:10.1145/2857050 apa: Chonev, V. K., Ouaknine, J., & Worrell, J. (2016). On the complexity of the orbit problem. Journal of the ACM. ACM. https://doi.org/10.1145/2857050 chicago: Chonev, Ventsislav K, Joël Ouaknine, and James Worrell. “On the Complexity of the Orbit Problem.” Journal of the ACM. ACM, 2016. https://doi.org/10.1145/2857050. ieee: V. K. Chonev, J. Ouaknine, and J. Worrell, “On the complexity of the orbit problem,” Journal of the ACM, vol. 63, no. 3. ACM, 2016. ista: Chonev VK, Ouaknine J, Worrell J. 2016. On the complexity of the orbit problem. Journal of the ACM. 63(3), 23. mla: Chonev, Ventsislav K., et al. “On the Complexity of the Orbit Problem.” Journal of the ACM, vol. 63, no. 3, 23, ACM, 2016, doi:10.1145/2857050. short: V.K. Chonev, J. Ouaknine, J. Worrell, Journal of the ACM 63 (2016). date_created: 2018-12-11T11:51:41Z date_published: 2016-06-01T00:00:00Z date_updated: 2021-01-12T06:50:17Z day: '01' department: - _id: KrCh doi: 10.1145/2857050 intvolume: ' 63' issue: '3' language: - iso: eng main_file_link: - open_access: '1' url: http://arxiv.org/abs/1303.2981 month: '06' oa: 1 oa_version: Preprint publication: Journal of the ACM publication_status: published publisher: ACM publist_id: '5831' quality_controlled: '1' scopus_import: 1 status: public title: On the complexity of the orbit problem type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 63 year: '2016' ... --- _id: '1389' abstract: - lang: eng text: "The continuous evolution of a wide variety of systems, including continous-time Markov chains and linear hybrid automata, can be\r\ndescribed in terms of linear differential equations. In this paper we study the decision problem of whether the solution x(t) of a system of linear differential equations dx/dt = Ax reaches a target halfspace infinitely often. This recurrent reachability problem can\r\nequivalently be formulated as the following Infinite Zeros Problem: does a real-valued function f:R≥0 --> R satisfying a given linear\r\ndifferential equation have infinitely many zeros? Our main decidability result is that if the differential equation has order at most 7, then the Infinite Zeros Problem is decidable. On the other hand, we show that a decision procedure for the Infinite Zeros Problem at order 9 (and above) would entail a major breakthrough in Diophantine Approximation, specifically an algorithm for computing the Lagrange constants of arbitrary real algebraic numbers to arbitrary precision." author: - first_name: Ventsislav K full_name: Chonev, Ventsislav K id: 36CBE2E6-F248-11E8-B48F-1D18A9856A87 last_name: Chonev - first_name: Joël full_name: Ouaknine, Joël last_name: Ouaknine - first_name: James full_name: Worrell, James last_name: Worrell citation: ama: 'Chonev VK, Ouaknine J, Worrell J. On recurrent reachability for continuous linear dynamical systems. In: LICS ’16. IEEE; 2016:515-524. doi:10.1145/2933575.2934548' apa: 'Chonev, V. K., Ouaknine, J., & Worrell, J. (2016). On recurrent reachability for continuous linear dynamical systems. In LICS ’16 (pp. 515–524). New York, NY, USA: IEEE. https://doi.org/10.1145/2933575.2934548' chicago: Chonev, Ventsislav K, Joël Ouaknine, and James Worrell. “On Recurrent Reachability for Continuous Linear Dynamical Systems.” In LICS ’16, 515–24. IEEE, 2016. https://doi.org/10.1145/2933575.2934548. ieee: V. K. Chonev, J. Ouaknine, and J. Worrell, “On recurrent reachability for continuous linear dynamical systems,” in LICS ’16, New York, NY, USA, 2016, pp. 515–524. ista: 'Chonev VK, Ouaknine J, Worrell J. 2016. On recurrent reachability for continuous linear dynamical systems. LICS ’16. LICS: Logic in Computer Science, 515–524.' mla: Chonev, Ventsislav K., et al. “On Recurrent Reachability for Continuous Linear Dynamical Systems.” LICS ’16, IEEE, 2016, pp. 515–24, doi:10.1145/2933575.2934548. short: V.K. Chonev, J. Ouaknine, J. Worrell, in:, LICS ’16, IEEE, 2016, pp. 515–524. conference: end_date: 2018-07-08 location: New York, NY, USA name: 'LICS: Logic in Computer Science' start_date: 2018-07-05 date_created: 2018-12-11T11:51:44Z date_published: 2016-07-05T00:00:00Z date_updated: 2021-01-12T06:50:20Z day: '05' department: - _id: KrCh doi: 10.1145/2933575.2934548 ec_funded: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1507.03632 month: '07' oa: 1 oa_version: Preprint page: 515 - 524 project: - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 25EE3708-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '267989' name: Quantitative Reactive Modeling publication: LICS '16 publication_status: published publisher: IEEE publist_id: '5820' quality_controlled: '1' scopus_import: 1 status: public title: On recurrent reachability for continuous linear dynamical systems type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 year: '2016' ... --- _id: '1426' abstract: - lang: eng text: 'Brood parasites exploit their host in order to increase their own fitness. Typically, this results in an arms race between parasite trickery and host defence. Thus, it is puzzling to observe hosts that accept parasitism without any resistance. The ‘mafia’ hypothesis suggests that these hosts accept parasitism to avoid retaliation. Retaliation has been shown to evolve when the hosts condition their response to mafia parasites, who use depredation as a targeted response to rejection. However, it is unclear if acceptance would also emerge when ‘farming’ parasites are present in the population. Farming parasites use depredation to synchronize the timing with the host, destroying mature clutches to force the host to re-nest. Herein, we develop an evolutionary model to analyse the interaction between depredatory parasites and their hosts. We show that coevolutionary cycles between farmers and mafia can still induce host acceptance of brood parasites. However, this equilibrium is unstable and in the long-run the dynamics of this host–parasite interaction exhibits strong oscillations: when farmers are the majority, accepters conditional to mafia (the host will reject first and only accept after retaliation by the parasite) have a higher fitness than unconditional accepters (the host always accepts parasitism). This leads to an increase in mafia parasites’ fitness and in turn induce an optimal environment for accepter hosts.' acknowledgement: C.H. gratefully acknowledges funding by the Schrödinger scholarship of the Austrian Science Fund (FWF) J3475. article_number: '160036' author: - first_name: Maria full_name: Chakra, Maria last_name: Chakra - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X - first_name: Arne full_name: Traulsen, Arne last_name: Traulsen citation: ama: Chakra M, Hilbe C, Traulsen A. Coevolutionary interactions between farmers and mafia induce host acceptance of avian brood parasites. Royal Society Open Science. 2016;3(5). doi:10.1098/rsos.160036 apa: Chakra, M., Hilbe, C., & Traulsen, A. (2016). Coevolutionary interactions between farmers and mafia induce host acceptance of avian brood parasites. Royal Society Open Science. Royal Society, The. https://doi.org/10.1098/rsos.160036 chicago: Chakra, Maria, Christian Hilbe, and Arne Traulsen. “Coevolutionary Interactions between Farmers and Mafia Induce Host Acceptance of Avian Brood Parasites.” Royal Society Open Science. Royal Society, The, 2016. https://doi.org/10.1098/rsos.160036. ieee: M. Chakra, C. Hilbe, and A. Traulsen, “Coevolutionary interactions between farmers and mafia induce host acceptance of avian brood parasites,” Royal Society Open Science, vol. 3, no. 5. Royal Society, The, 2016. ista: Chakra M, Hilbe C, Traulsen A. 2016. Coevolutionary interactions between farmers and mafia induce host acceptance of avian brood parasites. Royal Society Open Science. 3(5), 160036. mla: Chakra, Maria, et al. “Coevolutionary Interactions between Farmers and Mafia Induce Host Acceptance of Avian Brood Parasites.” Royal Society Open Science, vol. 3, no. 5, 160036, Royal Society, The, 2016, doi:10.1098/rsos.160036. short: M. Chakra, C. Hilbe, A. Traulsen, Royal Society Open Science 3 (2016). date_created: 2018-12-11T11:51:57Z date_published: 2016-05-01T00:00:00Z date_updated: 2021-01-12T06:50:39Z day: '01' ddc: - '000' department: - _id: KrCh doi: 10.1098/rsos.160036 file: - access_level: open_access checksum: bf84211b31fe87451e738ba301d729c3 content_type: application/pdf creator: system date_created: 2018-12-12T10:14:49Z date_updated: 2020-07-14T12:44:53Z file_id: '5104' file_name: IST-2016-589-v1+1_160036.full.pdf file_size: 937002 relation: main_file file_date_updated: 2020-07-14T12:44:53Z has_accepted_license: '1' intvolume: ' 3' issue: '5' language: - iso: eng month: '05' oa: 1 oa_version: Published Version publication: Royal Society Open Science publication_status: published publisher: Royal Society, The publist_id: '5776' pubrep_id: '589' quality_controlled: '1' scopus_import: 1 status: public title: Coevolutionary interactions between farmers and mafia induce host acceptance of avian brood parasites tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 3 year: '2016' ... --- _id: '1423' abstract: - lang: eng text: 'Direct reciprocity is a mechanism for the evolution of cooperation based on repeated interactions. When individuals meet repeatedly, they can use conditional strategies to enforce cooperative outcomes that would not be feasible in one-shot social dilemmas. Direct reciprocity requires that individuals keep track of their past interactions and find the right response. However, there are natural bounds on strategic complexity: Humans find it difficult to remember past interactions accurately, especially over long timespans. Given these limitations, it is natural to ask how complex strategies need to be for cooperation to evolve. Here, we study stochastic evolutionary game dynamics in finite populations to systematically compare the evolutionary performance of reactive strategies, which only respond to the co-player''s previous move, and memory-one strategies, which take into account the own and the co-player''s previous move. In both cases, we compare deterministic strategy and stochastic strategy spaces. For reactive strategies and small costs, we find that stochasticity benefits cooperation, because it allows for generous-tit-for-tat. For memory one strategies and small costs, we find that stochasticity does not increase the propensity for cooperation, because the deterministic rule of win-stay, lose-shift works best. For memory one strategies and large costs, however, stochasticity can augment cooperation.' acknowledgement: C.H. acknowledges generous funding from the Schrödinger scholarship of the Austrian Science Fund (FWF), J3475. article_number: '25676' author: - first_name: Seung full_name: Baek, Seung last_name: Baek - first_name: Hyeongchai full_name: Jeong, Hyeongchai last_name: Jeong - first_name: Christian full_name: Hilbe, Christian id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87 last_name: Hilbe orcid: 0000-0001-5116-955X - first_name: Martin full_name: Nowak, Martin last_name: Nowak citation: ama: Baek S, Jeong H, Hilbe C, Nowak M. Comparing reactive and memory-one strategies of direct reciprocity. Scientific Reports. 2016;6. doi:10.1038/srep25676 apa: Baek, S., Jeong, H., Hilbe, C., & Nowak, M. (2016). Comparing reactive and memory-one strategies of direct reciprocity. Scientific Reports. Nature Publishing Group. https://doi.org/10.1038/srep25676 chicago: Baek, Seung, Hyeongchai Jeong, Christian Hilbe, and Martin Nowak. “Comparing Reactive and Memory-One Strategies of Direct Reciprocity.” Scientific Reports. Nature Publishing Group, 2016. https://doi.org/10.1038/srep25676. ieee: S. Baek, H. Jeong, C. Hilbe, and M. Nowak, “Comparing reactive and memory-one strategies of direct reciprocity,” Scientific Reports, vol. 6. Nature Publishing Group, 2016. ista: Baek S, Jeong H, Hilbe C, Nowak M. 2016. Comparing reactive and memory-one strategies of direct reciprocity. Scientific Reports. 6, 25676. mla: Baek, Seung, et al. “Comparing Reactive and Memory-One Strategies of Direct Reciprocity.” Scientific Reports, vol. 6, 25676, Nature Publishing Group, 2016, doi:10.1038/srep25676. short: S. Baek, H. Jeong, C. Hilbe, M. Nowak, Scientific Reports 6 (2016). date_created: 2018-12-11T11:51:56Z date_published: 2016-05-10T00:00:00Z date_updated: 2021-01-12T06:50:38Z day: '10' ddc: - '000' department: - _id: KrCh doi: 10.1038/srep25676 file: - access_level: open_access checksum: ee17c482370d2e1b3add393710d3c696 content_type: application/pdf creator: system date_created: 2018-12-12T10:18:08Z date_updated: 2020-07-14T12:44:53Z file_id: '5327' file_name: IST-2016-590-v1+1_srep25676.pdf file_size: 1349915 relation: main_file file_date_updated: 2020-07-14T12:44:53Z has_accepted_license: '1' intvolume: ' 6' language: - iso: eng month: '05' oa: 1 oa_version: Published Version publication: Scientific Reports publication_status: published publisher: Nature Publishing Group publist_id: '5784' pubrep_id: '590' quality_controlled: '1' scopus_import: 1 status: public title: Comparing reactive and memory-one strategies of direct reciprocity tmp: image: /images/cc_by.png legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) short: CC BY (4.0) type: journal_article user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 6 year: '2016' ... --- _id: '1518' abstract: - lang: eng text: The inference of demographic history from genome data is hindered by a lack of efficient computational approaches. In particular, it has proved difficult to exploit the information contained in the distribution of genealogies across the genome. We have previously shown that the generating function (GF) of genealogies can be used to analytically compute likelihoods of demographic models from configurations of mutations in short sequence blocks (Lohse et al. 2011). Although the GF has a simple, recursive form, the size of such likelihood calculations explodes quickly with the number of individuals and applications of this framework have so far been mainly limited to small samples (pairs and triplets) for which the GF can be written by hand. Here we investigate several strategies for exploiting the inherent symmetries of the coalescent. In particular, we show that the GF of genealogies can be decomposed into a set of equivalence classes that allows likelihood calculations from nontrivial samples. Using this strategy, we automated blockwise likelihood calculations for a general set of demographic scenarios in Mathematica. These histories may involve population size changes, continuous migration, discrete divergence, and admixture between multiple populations. To give a concrete example, we calculate the likelihood for a model of isolation with migration (IM), assuming two diploid samples without phase and outgroup information. We demonstrate the new inference scheme with an analysis of two individual butterfly genomes from the sister species Heliconius melpomene rosina and H. cydno. acknowledgement: "We thank Lynsey Bunnefeld for discussions throughout the project and Joshua Schraiber and one anonymous reviewer\r\nfor constructive comments on an earlier version of this manuscript. This work was supported by funding from the\r\nUnited Kingdom Natural Environment Research Council (to K.L.) (NE/I020288/1) and a grant from the European\r\nResearch Council (250152) (to N.H.B.)." article_processing_charge: No article_type: original author: - first_name: Konrad full_name: Lohse, Konrad last_name: Lohse - first_name: Martin full_name: Chmelik, Martin id: 3624234E-F248-11E8-B48F-1D18A9856A87 last_name: Chmelik - first_name: Simon full_name: Martin, Simon last_name: Martin - first_name: Nicholas H full_name: Barton, Nicholas H id: 4880FE40-F248-11E8-B48F-1D18A9856A87 last_name: Barton orcid: 0000-0002-8548-5240 citation: ama: Lohse K, Chmelik M, Martin S, Barton NH. Efficient strategies for calculating blockwise likelihoods under the coalescent. Genetics. 2016;202(2):775-786. doi:10.1534/genetics.115.183814 apa: Lohse, K., Chmelik, M., Martin, S., & Barton, N. H. (2016). Efficient strategies for calculating blockwise likelihoods under the coalescent. Genetics. Genetics Society of America. https://doi.org/10.1534/genetics.115.183814 chicago: Lohse, Konrad, Martin Chmelik, Simon Martin, and Nicholas H Barton. “Efficient Strategies for Calculating Blockwise Likelihoods under the Coalescent.” Genetics. Genetics Society of America, 2016. https://doi.org/10.1534/genetics.115.183814. ieee: K. Lohse, M. Chmelik, S. Martin, and N. H. Barton, “Efficient strategies for calculating blockwise likelihoods under the coalescent,” Genetics, vol. 202, no. 2. Genetics Society of America, pp. 775–786, 2016. ista: Lohse K, Chmelik M, Martin S, Barton NH. 2016. Efficient strategies for calculating blockwise likelihoods under the coalescent. Genetics. 202(2), 775–786. mla: Lohse, Konrad, et al. “Efficient Strategies for Calculating Blockwise Likelihoods under the Coalescent.” Genetics, vol. 202, no. 2, Genetics Society of America, 2016, pp. 775–86, doi:10.1534/genetics.115.183814. short: K. Lohse, M. Chmelik, S. Martin, N.H. Barton, Genetics 202 (2016) 775–786. date_created: 2018-12-11T11:52:29Z date_published: 2016-02-01T00:00:00Z date_updated: 2022-05-24T09:16:22Z day: '01' ddc: - '570' department: - _id: KrCh - _id: NiBa doi: 10.1534/genetics.115.183814 ec_funded: 1 external_id: pmid: - '26715666' file: - access_level: open_access checksum: 41c9b5d72e7fe4624dd22dfe622337d5 content_type: application/pdf creator: system date_created: 2018-12-12T10:16:51Z date_updated: 2020-07-14T12:45:00Z file_id: '5241' file_name: IST-2016-561-v1+1_Lohse_et_al_Genetics_2015.pdf file_size: 957466 relation: main_file file_date_updated: 2020-07-14T12:45:00Z has_accepted_license: '1' intvolume: ' 202' issue: '2' language: - iso: eng month: '02' oa: 1 oa_version: Preprint page: 775 - 786 pmid: 1 project: - _id: 25B07788-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '250152' name: Limits to selection in biology and in evolutionary computation publication: Genetics publication_status: published publisher: Genetics Society of America publist_id: '5658' pubrep_id: '561' quality_controlled: '1' scopus_import: '1' status: public title: Efficient strategies for calculating blockwise likelihoods under the coalescent type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 202 year: '2016' ... --- _id: '478' abstract: - lang: eng text: 'Magic: the Gathering is a game about magical combat for any number of players. Formally it is a zero-sum, imperfect information stochastic game that consists of a potentially unbounded number of steps. We consider the problem of deciding if a move is legal in a given single step of Magic. We show that the problem is (a) coNP-complete in general; and (b) in P if either of two small sets of cards are not used. Our lower bound holds even for single-player Magic games. The significant aspects of our results are as follows: First, in most real-life game problems, the task of deciding whether a given move is legal in a single step is trivial, and the computationally hard task is to find the best sequence of legal moves in the presence of multiple players. In contrast, quite uniquely our hardness result holds for single step and with only one-player. Second, we establish efficient algorithms for important special cases of Magic.' alternative_title: - Frontiers in Artificial Intelligence and Applications author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Rasmus full_name: Ibsen-Jensen, Rasmus id: 3B699956-F248-11E8-B48F-1D18A9856A87 last_name: Ibsen-Jensen orcid: 0000-0003-4783-0389 citation: ama: 'Chatterjee K, Ibsen-Jensen R. The complexity of deciding legality of a single step of magic: The gathering. In: Vol 285. IOS Press; 2016:1432-1439. doi:10.3233/978-1-61499-672-9-1432' apa: 'Chatterjee, K., & Ibsen-Jensen, R. (2016). The complexity of deciding legality of a single step of magic: The gathering (Vol. 285, pp. 1432–1439). Presented at the ECAI: European Conference on Artificial Intelligence, The Hague, Netherlands: IOS Press. https://doi.org/10.3233/978-1-61499-672-9-1432' chicago: 'Chatterjee, Krishnendu, and Rasmus Ibsen-Jensen. “The Complexity of Deciding Legality of a Single Step of Magic: The Gathering,” 285:1432–39. IOS Press, 2016. https://doi.org/10.3233/978-1-61499-672-9-1432.' ieee: 'K. Chatterjee and R. Ibsen-Jensen, “The complexity of deciding legality of a single step of magic: The gathering,” presented at the ECAI: European Conference on Artificial Intelligence, The Hague, Netherlands, 2016, vol. 285, pp. 1432–1439.' ista: 'Chatterjee K, Ibsen-Jensen R. 2016. The complexity of deciding legality of a single step of magic: The gathering. ECAI: European Conference on Artificial Intelligence, Frontiers in Artificial Intelligence and Applications, vol. 285, 1432–1439.' mla: 'Chatterjee, Krishnendu, and Rasmus Ibsen-Jensen. The Complexity of Deciding Legality of a Single Step of Magic: The Gathering. Vol. 285, IOS Press, 2016, pp. 1432–39, doi:10.3233/978-1-61499-672-9-1432.' short: K. Chatterjee, R. Ibsen-Jensen, in:, IOS Press, 2016, pp. 1432–1439. conference: end_date: 2016-09-02 location: The Hague, Netherlands name: 'ECAI: European Conference on Artificial Intelligence' start_date: 2016-08-29 date_created: 2018-12-11T11:46:41Z date_published: 2016-01-01T00:00:00Z date_updated: 2021-01-12T08:00:54Z day: '01' ddc: - '004' department: - _id: KrCh doi: 10.3233/978-1-61499-672-9-1432 file: - access_level: open_access checksum: 848043c812ace05e459579c923f3d3cf content_type: application/pdf creator: system date_created: 2018-12-12T10:07:59Z date_updated: 2020-07-14T12:46:35Z file_id: '4658' file_name: IST-2018-950-v1+1_2016_Chatterjee_The_complexity.pdf file_size: 2116225 relation: main_file file_date_updated: 2020-07-14T12:46:35Z has_accepted_license: '1' intvolume: ' 285' language: - iso: eng license: https://creativecommons.org/licenses/by-nc/4.0/ month: '01' oa: 1 oa_version: Published Version page: 1432 - 1439 publication_status: published publisher: IOS Press publist_id: '7342' pubrep_id: '950' quality_controlled: '1' scopus_import: 1 status: public title: 'The complexity of deciding legality of a single step of magic: The gathering' tmp: image: /images/cc_by_nc.png legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) short: CC BY-NC (4.0) type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 285 year: '2016' ... --- _id: '480' abstract: - lang: eng text: Graph games provide the foundation for modeling and synthesizing reactive processes. In the synthesis of stochastic reactive processes, the traditional model is perfect-information stochastic games, where some transitions of the game graph are controlled by two adversarial players, and the other transitions are executed probabilistically. We consider such games where the objective is the conjunction of several quantitative objectives (specified as mean-payoff conditions), which we refer to as generalized mean-payoff objectives. The basic decision problem asks for the existence of a finite-memory strategy for a player that ensures the generalized mean-payoff objective be satisfied with a desired probability against all strategies of the opponent. A special case of the decision problem is the almost-sure problem where the desired probability is 1. Previous results presented a semi-decision procedure for -approximations of the almost-sure problem. In this work, we show that both the almost-sure problem as well as the general basic decision problem are coNP-complete, significantly improving the previous results. Moreover, we show that in the case of 1-player stochastic games, randomized memoryless strategies are sufficient and the problem can be solved in polynomial time. In contrast, in two-player stochastic games, we show that even with randomized strategies exponential memory is required in general, and present a matching exponential upper bound. We also study the basic decision problem with infinite-memory strategies and present computational complexity results for the problem. Our results are relevant in the synthesis of stochastic reactive systems with multiple quantitative requirements. alternative_title: - Proceedings Symposium on Logic in Computer Science author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Laurent full_name: Doyen, Laurent last_name: Doyen citation: ama: 'Chatterjee K, Doyen L. Perfect-information stochastic games with generalized mean-payoff objectives. In: Vol 05-08-July-2016. IEEE; 2016:247-256. doi:10.1145/2933575.2934513' apa: 'Chatterjee, K., & Doyen, L. (2016). Perfect-information stochastic games with generalized mean-payoff objectives (Vol. 05-08-July-2016, pp. 247–256). Presented at the LICS: Logic in Computer Science, New York, NY, USA: IEEE. https://doi.org/10.1145/2933575.2934513' chicago: Chatterjee, Krishnendu, and Laurent Doyen. “Perfect-Information Stochastic Games with Generalized Mean-Payoff Objectives,” 05-08-July-2016:247–56. IEEE, 2016. https://doi.org/10.1145/2933575.2934513. ieee: 'K. Chatterjee and L. Doyen, “Perfect-information stochastic games with generalized mean-payoff objectives,” presented at the LICS: Logic in Computer Science, New York, NY, USA, 2016, vol. 05-08-July-2016, pp. 247–256.' ista: 'Chatterjee K, Doyen L. 2016. Perfect-information stochastic games with generalized mean-payoff objectives. LICS: Logic in Computer Science, Proceedings Symposium on Logic in Computer Science, vol. 05-08-July-2016, 247–256.' mla: Chatterjee, Krishnendu, and Laurent Doyen. Perfect-Information Stochastic Games with Generalized Mean-Payoff Objectives. Vol. 05-08-July-2016, IEEE, 2016, pp. 247–56, doi:10.1145/2933575.2934513. short: K. Chatterjee, L. Doyen, in:, IEEE, 2016, pp. 247–256. conference: end_date: 2016-07-08 location: New York, NY, USA name: 'LICS: Logic in Computer Science' start_date: 2016-07-05 date_created: 2018-12-11T11:46:42Z date_published: 2016-07-05T00:00:00Z date_updated: 2021-01-12T08:00:56Z day: '05' department: - _id: KrCh doi: 10.1145/2933575.2934513 ec_funded: 1 language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1604.06376 month: '07' oa: 1 oa_version: Preprint page: 247 - 256 project: - _id: 25832EC2-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S 11407_N23 name: Rigorous Systems Engineering - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 25892FC0-B435-11E9-9278-68D0E5697425 grant_number: ICT15-003 name: Efficient Algorithms for Computer Aided Verification publication_status: published publisher: IEEE publist_id: '7340' quality_controlled: '1' scopus_import: 1 status: public title: Perfect-information stochastic games with generalized mean-payoff objectives type: conference user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87 volume: 05-08-July-2016 year: '2016' ... --- _id: '1477' abstract: - lang: eng text: We consider partially observable Markov decision processes (POMDPs) with ω-regular conditions specified as parity objectives. The class of ω-regular languages provides a robust specification language to express properties in verification, and parity objectives are canonical forms to express them. The qualitative analysis problem given a POMDP and a parity objective asks whether there is a strategy to ensure that the objective is satisfied with probability 1 (resp. positive probability). While the qualitative analysis problems are undecidable even for special cases of parity objectives, we establish decidability (with optimal complexity) for POMDPs with all parity objectives under finite-memory strategies. We establish optimal (exponential) memory bounds and EXPTIME-completeness of the qualitative analysis problems under finite-memory strategies for POMDPs with parity objectives. We also present a practical approach, where we design heuristics to deal with the exponential complexity, and have applied our implementation on a number of POMDP examples. author: - first_name: Krishnendu full_name: Chatterjee, Krishnendu id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87 last_name: Chatterjee orcid: 0000-0002-4561-241X - first_name: Martin full_name: Chmelik, Martin id: 3624234E-F248-11E8-B48F-1D18A9856A87 last_name: Chmelik - first_name: Mathieu full_name: Tracol, Mathieu id: 3F54FA38-F248-11E8-B48F-1D18A9856A87 last_name: Tracol citation: ama: Chatterjee K, Chmelik M, Tracol M. What is decidable about partially observable Markov decision processes with ω-regular objectives. Journal of Computer and System Sciences. 2016;82(5):878-911. doi:10.1016/j.jcss.2016.02.009 apa: Chatterjee, K., Chmelik, M., & Tracol, M. (2016). What is decidable about partially observable Markov decision processes with ω-regular objectives. Journal of Computer and System Sciences. Elsevier. https://doi.org/10.1016/j.jcss.2016.02.009 chicago: Chatterjee, Krishnendu, Martin Chmelik, and Mathieu Tracol. “What Is Decidable about Partially Observable Markov Decision Processes with ω-Regular Objectives.” Journal of Computer and System Sciences. Elsevier, 2016. https://doi.org/10.1016/j.jcss.2016.02.009. ieee: K. Chatterjee, M. Chmelik, and M. Tracol, “What is decidable about partially observable Markov decision processes with ω-regular objectives,” Journal of Computer and System Sciences, vol. 82, no. 5. Elsevier, pp. 878–911, 2016. ista: Chatterjee K, Chmelik M, Tracol M. 2016. What is decidable about partially observable Markov decision processes with ω-regular objectives. Journal of Computer and System Sciences. 82(5), 878–911. mla: Chatterjee, Krishnendu, et al. “What Is Decidable about Partially Observable Markov Decision Processes with ω-Regular Objectives.” Journal of Computer and System Sciences, vol. 82, no. 5, Elsevier, 2016, pp. 878–911, doi:10.1016/j.jcss.2016.02.009. short: K. Chatterjee, M. Chmelik, M. Tracol, Journal of Computer and System Sciences 82 (2016) 878–911. date_created: 2018-12-11T11:52:15Z date_published: 2016-08-01T00:00:00Z date_updated: 2023-02-23T12:24:38Z day: '01' department: - _id: KrCh doi: 10.1016/j.jcss.2016.02.009 ec_funded: 1 external_id: arxiv: - '1309.2802' intvolume: ' 82' issue: '5' language: - iso: eng main_file_link: - open_access: '1' url: https://arxiv.org/abs/1309.2802 month: '08' oa: 1 oa_version: Preprint page: 878 - 911 project: - _id: 2584A770-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: P 23499-N23 name: Modern Graph Algorithmic Techniques in Formal Verification - _id: 25863FF4-B435-11E9-9278-68D0E5697425 call_identifier: FWF grant_number: S11407 name: Game Theory - _id: 2581B60A-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '279307' name: 'Quantitative Graph Games: Theory and Applications' - _id: 2587B514-B435-11E9-9278-68D0E5697425 name: Microsoft Research Faculty Fellowship publication: Journal of Computer and System Sciences publication_status: published publisher: Elsevier publist_id: '5718' quality_controlled: '1' related_material: record: - id: '2295' relation: earlier_version status: public - id: '5400' relation: earlier_version status: public scopus_import: 1 status: public title: What is decidable about partially observable Markov decision processes with ω-regular objectives type: journal_article user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 volume: 82 year: '2016' ...