[{"article_processing_charge":"No","external_id":{"isi":["000723567800004"]},"author":[{"orcid":"0000-0002-4561-241X","full_name":"Chatterjee, Krishnendu","last_name":"Chatterjee","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","first_name":"Krishnendu"},{"last_name":"Goharshady","orcid":"0000-0003-1702-6584","full_name":"Goharshady, Amir","id":"391365CE-F248-11E8-B48F-1D18A9856A87","first_name":"Amir"},{"first_name":"Andreas","id":"49704004-F248-11E8-B48F-1D18A9856A87","last_name":"Pavlogiannis","orcid":"0000-0002-8943-0722","full_name":"Pavlogiannis, Andreas"}],"publist_id":"6468","editor":[{"first_name":"Deepak","last_name":"D'Souza","full_name":"D'Souza, Deepak"}],"title":"JTDec: A tool for tree decompositions in soot","citation":{"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.","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.","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","short":"K. Chatterjee, A.K. Goharshady, A. Pavlogiannis, in:, D. D’Souza (Ed.), Springer, 2017, pp. 59–66.","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.","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."},"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","project":[{"call_identifier":"FWF","_id":"25863FF4-B435-11E9-9278-68D0E5697425","name":"Game Theory","grant_number":"S11407"},{"grant_number":"279307","name":"Quantitative Graph Games: Theory and Applications","_id":"2581B60A-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"page":"59 - 66","date_created":"2018-12-11T11:49:22Z","doi":"10.1007/978-3-319-68167-2_4","date_published":"2017-01-01T00:00:00Z","year":"2017","isi":1,"has_accepted_license":"1","day":"01","oa":1,"quality_controlled":"1","publisher":"Springer","file_date_updated":"2020-07-14T12:48:16Z","department":[{"_id":"KrCh"}],"date_updated":"2024-03-27T23:30:34Z","ddc":["005"],"conference":{"name":"ATVA: Automated Technology for Verification and Analysis","end_date":"2017-10-06","location":"Pune, India","start_date":"2017-10-03"},"type":"conference","pubrep_id":"845","status":"public","_id":"949","ec_funded":1,"volume":10482,"related_material":{"record":[{"relation":"dissertation_contains","id":"8934","status":"public"}]},"publication_status":"published","publication_identifier":{"issn":["03029743"]},"language":[{"iso":"eng"}],"file":[{"checksum":"a0d9f5f94dc594c4e71e78525c9942f1","file_id":"4835","relation":"main_file","access_level":"open_access","content_type":"application/pdf","file_name":"IST-2017-845-v1+1_2017_Chatterjee_JTDec.pdf","date_created":"2018-12-12T10:10:45Z","creator":"system","file_size":948514,"date_updated":"2020-07-14T12:48:16Z"}],"scopus_import":"1","alternative_title":["LNCS"],"intvolume":" 10482","month":"01","abstract":[{"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.","lang":"eng"}],"oa_version":"Submitted Version"},{"date_updated":"2023-02-14T10:11:07Z","ddc":["000","004","006"],"file_date_updated":"2018-12-12T10:16:02Z","department":[{"_id":"KrCh"}],"_id":"1068","tmp":{"short":"CC BY (3.0)","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)"},"conference":{"start_date":"2016-08-22","end_date":"2016-08-26","location":"Krakow, Poland","name":"MFCS: Mathematical Foundations of Computer Science (SG)"},"type":"conference","pubrep_id":"779","status":"public","publication_status":"published","language":[{"iso":"eng"}],"file":[{"file_id":"5187","content_type":"application/pdf","access_level":"open_access","relation":"main_file","date_created":"2018-12-12T10:16:02Z","file_name":"IST-2017-779-v1+1_LIPIcs-MFCS-2016-25.pdf","date_updated":"2018-12-12T10:16:02Z","file_size":632786,"creator":"system"}],"license":"https://creativecommons.org/licenses/by/3.0/","ec_funded":1,"volume":58,"abstract":[{"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}. ","lang":"eng"}],"oa_version":"Published Version","scopus_import":"1","alternative_title":["LIPIcs"],"intvolume":" 58","month":"08","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","short":"K. Chatterjee, W. Dvorák, M.H. Henzinger, V. Loitzenbauer, in:, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016.","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.","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.","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.","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."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","publist_id":"6317","author":[{"first_name":"Krishnendu","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-4561-241X","full_name":"Chatterjee, Krishnendu","last_name":"Chatterjee"},{"full_name":"Dvorák, Wolfgang","last_name":"Dvorák","first_name":"Wolfgang"},{"id":"540c9bbd-f2de-11ec-812d-d04a5be85630","first_name":"Monika H","last_name":"Henzinger","orcid":"0000-0002-5008-6530","full_name":"Henzinger, Monika H"},{"first_name":"Veronika","full_name":"Loitzenbauer, Veronika","last_name":"Loitzenbauer"}],"title":"Conditionally optimal algorithms for generalized Büchi Games","article_number":"25","project":[{"name":"Efficient Algorithms for Computer Aided Verification","grant_number":"ICT15-003","_id":"25892FC0-B435-11E9-9278-68D0E5697425"},{"call_identifier":"FWF","_id":"25832EC2-B435-11E9-9278-68D0E5697425","name":"Rigorous Systems Engineering","grant_number":"S 11407_N23"},{"_id":"2581B60A-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","name":"Quantitative Graph Games: Theory and Applications","grant_number":"279307"}],"year":"2016","has_accepted_license":"1","day":"01","date_created":"2018-12-11T11:49:58Z","date_published":"2016-08-01T00:00:00Z","doi":"10.4230/LIPIcs.MFCS.2016.25","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","oa":1,"publisher":"Schloss Dagstuhl - Leibniz-Zentrum für Informatik","quality_controlled":"1"},{"article_number":"100","project":[{"grant_number":"S 11407_N23","name":"Rigorous Systems Engineering","call_identifier":"FWF","_id":"25832EC2-B435-11E9-9278-68D0E5697425"},{"grant_number":"279307","name":"Quantitative Graph Games: Theory and Applications","_id":"2581B60A-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"},{"name":"Quantitative Reactive Modeling","grant_number":"267989","_id":"25EE3708-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"citation":{"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.","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.","short":"V.K. Chonev, J. Ouaknine, J. Worrell, in:, Schloss Dagstuhl- Leibniz-Zentrum fur Informatik, 2016.","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","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","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."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","author":[{"full_name":"Chonev, Ventsislav K","last_name":"Chonev","first_name":"Ventsislav K","id":"36CBE2E6-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Ouaknine","full_name":"Ouaknine, Joël","first_name":"Joël"},{"last_name":"Worrell","full_name":"Worrell, James","first_name":"James"}],"publist_id":"6314","title":"On the skolem problem for continuous linear dynamical systems","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).","publisher":"Schloss Dagstuhl- Leibniz-Zentrum fur Informatik","quality_controlled":"1","oa":1,"has_accepted_license":"1","year":"2016","day":"01","date_published":"2016-08-01T00:00:00Z","doi":"10.4230/LIPIcs.ICALP.2016.100","date_created":"2018-12-11T11:49:59Z","_id":"1069","type":"conference","conference":{"name":"ICALP: Automata, Languages and Programming","location":"Rome, Italy","end_date":"2016-07-15","start_date":"2016-07-12"},"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"status":"public","pubrep_id":"778","date_updated":"2021-01-12T06:48:03Z","ddc":["004","006"],"file_date_updated":"2018-12-12T10:16:26Z","department":[{"_id":"KrCh"}],"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."}],"oa_version":"Published Version","scopus_import":1,"alternative_title":["LIPIcs"],"month":"08","intvolume":" 55","publication_status":"published","file":[{"access_level":"open_access","relation":"main_file","content_type":"application/pdf","file_id":"5213","creator":"system","date_updated":"2018-12-12T10:16:26Z","file_size":521415,"date_created":"2018-12-12T10:16:26Z","file_name":"IST-2017-778-v1+1_LIPIcs-ICALP-2016-100.pdf"}],"language":[{"iso":"eng"}],"volume":55,"ec_funded":1,"license":"https://creativecommons.org/licenses/by/4.0/"},{"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","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.","short":"K. Chatterjee, L. Doyen, in:, Schloss Dagstuhl- Leibniz-Zentrum fur Informatik, 2016.","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.","ista":"Chatterjee K, Doyen L. 2016. Computation tree logic for synchronization properties. ICALP: Automata, Languages and Programming, LIPIcs, vol. 55, 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."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","author":[{"first_name":"Krishnendu","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","last_name":"Chatterjee","orcid":"0000-0002-4561-241X","full_name":"Chatterjee, Krishnendu"},{"first_name":"Laurent","last_name":"Doyen","full_name":"Doyen, Laurent"}],"publist_id":"6313","title":"Computation tree logic for synchronization properties","article_number":"98","project":[{"_id":"25832EC2-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","name":"Rigorous Systems Engineering","grant_number":"S 11407_N23"},{"_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"}],"has_accepted_license":"1","year":"2016","day":"01","doi":"10.4230/LIPIcs.ICALP.2016.98","date_published":"2016-01-01T00:00:00Z","date_created":"2018-12-11T11:49:59Z","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","quality_controlled":"1","publisher":"Schloss Dagstuhl- Leibniz-Zentrum fur Informatik","oa":1,"date_updated":"2021-01-12T06:48:03Z","ddc":["005"],"file_date_updated":"2018-12-12T10:08:52Z","department":[{"_id":"KrCh"}],"_id":"1070","type":"conference","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"conference":{"location":"Rome, Italy","end_date":"2016-07-15","start_date":"2016-07-12","name":"ICALP: Automata, Languages and Programming"},"status":"public","pubrep_id":"812","publication_status":"published","file":[{"file_id":"4714","content_type":"application/pdf","access_level":"open_access","relation":"main_file","date_created":"2018-12-12T10:08:52Z","file_name":"IST-2017-812-v1+1_LIPIcs-ICALP-2016-98.pdf","date_updated":"2018-12-12T10:08:52Z","file_size":546133,"creator":"system"}],"language":[{"iso":"eng"}],"volume":55,"ec_funded":1,"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. "}],"oa_version":"Published Version","alternative_title":["LIPIcs"],"scopus_import":1,"month":"01","intvolume":" 55"},{"quality_controlled":"1","publisher":"Schloss Dagstuhl - Leibniz-Zentrum für Informatik","oa":1,"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.","doi":"10.4230/LIPIcs.MFCS.2016.24","date_published":"2016-08-01T00:00:00Z","date_created":"2018-12-11T11:50:05Z","has_accepted_license":"1","year":"2016","day":"01","project":[{"name":"Rigorous Systems Engineering","grant_number":"S 11407_N23","_id":"25832EC2-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"},{"call_identifier":"FWF","_id":"25F42A32-B435-11E9-9278-68D0E5697425","grant_number":"Z211","name":"The Wittgenstein Prize"},{"_id":"2581B60A-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","name":"Quantitative Graph Games: Theory and Applications","grant_number":"279307"},{"name":"Efficient Algorithms for Computer Aided Verification","grant_number":"ICT15-003","_id":"25892FC0-B435-11E9-9278-68D0E5697425"}],"article_number":"24","author":[{"orcid":"0000-0002-4561-241X","full_name":"Chatterjee, Krishnendu","last_name":"Chatterjee","first_name":"Krishnendu","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Thomas A","id":"40876CD8-F248-11E8-B48F-1D18A9856A87","orcid":"0000−0002−2985−7724","full_name":"Henzinger, Thomas A","last_name":"Henzinger"},{"id":"2FC5DA74-F248-11E8-B48F-1D18A9856A87","first_name":"Jan","last_name":"Otop","full_name":"Otop, Jan"}],"publist_id":"6286","title":"Nested weighted limit-average automata of bounded width","citation":{"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.","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.","short":"K. Chatterjee, T.A. Henzinger, J. Otop, in:, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016.","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.","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."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","scopus_import":1,"alternative_title":["LIPIcs"],"month":"08","intvolume":" 58","abstract":[{"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.","lang":"eng"}],"oa_version":"Published Version","volume":58,"ec_funded":1,"publication_status":"published","file":[{"access_level":"open_access","relation":"main_file","content_type":"application/pdf","file_id":"5286","creator":"system","date_updated":"2018-12-12T10:17:31Z","file_size":564560,"date_created":"2018-12-12T10:17:31Z","file_name":"IST-2017-795-v1+1_LIPIcs-MFCS-2016-24.pdf"}],"language":[{"iso":"eng"}],"type":"conference","conference":{"name":"MFCS: Mathematical Foundations of Computer Science (SG)","start_date":"2016-08-22","location":"Krakow; Poland","end_date":"2016-08-26"},"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"status":"public","pubrep_id":"795","_id":"1090","department":[{"_id":"KrCh"},{"_id":"ToHe"}],"file_date_updated":"2018-12-12T10:17:31Z","date_updated":"2021-01-12T06:48:12Z","ddc":["004"]},{"type":"conference","conference":{"end_date":"2016-07-08","location":"New York, NY, USA","start_date":"2016-07-05","name":"LICS: Logic in Computer Science"},"status":"public","_id":"1138","department":[{"_id":"KrCh"},{"_id":"ToHe"}],"date_updated":"2021-01-12T06:48:34Z","scopus_import":1,"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1604.06764"}],"month":"07","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."}],"oa_version":"Preprint","ec_funded":1,"publication_status":"published","language":[{"iso":"eng"}],"project":[{"call_identifier":"FP7","_id":"25EE3708-B435-11E9-9278-68D0E5697425","grant_number":"267989","name":"Quantitative Reactive Modeling"},{"call_identifier":"FWF","_id":"25832EC2-B435-11E9-9278-68D0E5697425","name":"Rigorous Systems Engineering","grant_number":"S 11407_N23"},{"grant_number":"Z211","name":"The Wittgenstein Prize","call_identifier":"FWF","_id":"25F42A32-B435-11E9-9278-68D0E5697425"},{"call_identifier":"FWF","_id":"2584A770-B435-11E9-9278-68D0E5697425","name":"Modern Graph Algorithmic Techniques in Formal Verification","grant_number":"P 23499-N23"},{"call_identifier":"FP7","_id":"2581B60A-B435-11E9-9278-68D0E5697425","name":"Quantitative Graph Games: Theory and Applications","grant_number":"279307"},{"_id":"25892FC0-B435-11E9-9278-68D0E5697425","grant_number":"ICT15-003","name":"Efficient Algorithms for Computer Aided Verification"}],"publist_id":"6220","author":[{"full_name":"Chatterjee, Krishnendu","orcid":"0000-0002-4561-241X","last_name":"Chatterjee","first_name":"Krishnendu","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Henzinger","orcid":"0000−0002−2985−7724","full_name":"Henzinger, Thomas A","first_name":"Thomas A","id":"40876CD8-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Otop","full_name":"Otop, Jan","id":"2FC5DA74-F248-11E8-B48F-1D18A9856A87","first_name":"Jan"}],"external_id":{"arxiv":["1604.06764"]},"title":"Quantitative automata under probabilistic semantics","citation":{"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.","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.","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.","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."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","quality_controlled":"1","publisher":"IEEE","oa":1,"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","page":"76 - 85","date_published":"2016-07-05T00:00:00Z","doi":"10.1145/2933575.2933588","date_created":"2018-12-11T11:50:21Z","year":"2016","day":"05","publication":"Proceedings of the 31st Annual ACM/IEEE Symposium"},{"_id":"1140","type":"conference","conference":{"name":"LICS: Logic in Computer Science","end_date":"2016-07-08","location":"New York, NY, USA","start_date":"2016-07-05"},"status":"public","date_updated":"2022-09-09T11:46:17Z","department":[{"_id":"KrCh"}],"abstract":[{"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.","lang":"eng"}],"oa_version":"Preprint","alternative_title":["Proceedings Symposium on Logic in Computer Science"],"scopus_import":"1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1602.02670"}],"month":"07","publication_status":"published","language":[{"iso":"eng"}],"project":[{"grant_number":"S 11407_N23","name":"Rigorous Systems Engineering","_id":"25832EC2-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"},{"_id":"25892FC0-B435-11E9-9278-68D0E5697425","grant_number":"ICT15-003","name":"Efficient Algorithms for Computer Aided Verification"}],"citation":{"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.","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.","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","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.","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.","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."},"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","first_name":"Krishnendu","orcid":"0000-0002-4561-241X","full_name":"Chatterjee, Krishnendu","last_name":"Chatterjee"},{"first_name":"Wolfgang","full_name":"Dvoák, Wolfgang","last_name":"Dvoák"},{"first_name":"Monika H","id":"540c9bbd-f2de-11ec-812d-d04a5be85630","orcid":"0000-0002-5008-6530","full_name":"Henzinger, Monika H","last_name":"Henzinger"},{"first_name":"Veronika","last_name":"Loitzenbauer","full_name":"Loitzenbauer, Veronika"}],"publist_id":"6219","external_id":{"arxiv":["1602.02670"]},"article_processing_charge":"No","title":"Model and objective separation with conditional lower bounds: disjunction is harder than conjunction","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.","quality_controlled":"1","publisher":"IEEE","oa":1,"year":"2016","day":"05","publication":"Proceedings of the 31st Annual ACM/IEEE Symposium on Logic in Computer Science","page":"197 - 206","date_published":"2016-07-05T00:00:00Z","doi":"10.1145/2933575.2935304","date_created":"2018-12-11T11:50:22Z"},{"scopus_import":1,"publisher":"AAAI Press","quality_controlled":"1","oa":1,"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1604.05090v1"}],"month":"01","abstract":[{"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.","lang":"eng"}],"oa_version":"Preprint","page":"172 - 179","related_material":{"link":[{"url":"https://www.ijcai.org/proceedings/2016","relation":"table_of_contents"}]},"volume":"2016-January","date_published":"2016-01-01T00:00:00Z","date_created":"2018-12-11T11:50:35Z","ec_funded":1,"year":"2016","publication_status":"published","day":"01","language":[{"iso":"eng"}],"type":"conference","conference":{"start_date":"2016-07-09","end_date":"2016-07-15","location":"New York, NY, USA","name":"IJCAI: International Joint Conference on Artificial Intelligence"},"status":"public","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","name":"Efficient Algorithms for Computer Aided Verification","grant_number":"ICT15-003"},{"call_identifier":"FP7","_id":"2581B60A-B435-11E9-9278-68D0E5697425","name":"Quantitative Graph Games: Theory and Applications","grant_number":"279307"},{"grant_number":"267989","name":"Quantitative Reactive Modeling","_id":"25EE3708-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"_id":"1182","publist_id":"6171","author":[{"first_name":"Krishnendu","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","full_name":"Chatterjee, Krishnendu","orcid":"0000-0002-4561-241X","last_name":"Chatterjee"},{"first_name":"Rasmus","id":"3B699956-F248-11E8-B48F-1D18A9856A87","full_name":"Ibsen-Jensen, Rasmus","orcid":"0000-0003-4783-0389","last_name":"Ibsen-Jensen"},{"full_name":"Tkadlec, Josef","orcid":"0000-0002-1097-9684","last_name":"Tkadlec","first_name":"Josef","id":"3F24CCC8-F248-11E8-B48F-1D18A9856A87"}],"department":[{"_id":"KrCh"}],"title":"Robust draws in balanced knockout tournaments","citation":{"chicago":"Chatterjee, Krishnendu, Rasmus Ibsen-Jensen, and Josef Tkadlec. “Robust Draws in Balanced Knockout Tournaments,” 2016–January:172–79. AAAI Press, 2016.","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.","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.","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.","ama":"Chatterjee K, Ibsen-Jensen R, Tkadlec J. Robust draws in balanced knockout tournaments. In: Vol 2016-January. AAAI Press; 2016:172-179."},"date_updated":"2023-02-21T10:04:26Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"},{"date_published":"2016-12-01T00:00:00Z","doi":"10.1016/j.plrev.2016.10.004","date_created":"2018-12-11T11:50:40Z","page":"29 - 31","day":"01","publication":"Physics of Life Reviews","has_accepted_license":"1","year":"2016","quality_controlled":"1","publisher":"Elsevier","oa":1,"acknowledgement":"C.H. acknowledges generous support from the ISTFELLOW program.","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","author":[{"full_name":"Hilbe, Christian","orcid":"0000-0001-5116-955X","last_name":"Hilbe","first_name":"Christian","id":"2FDF8F3C-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Traulsen","full_name":"Traulsen, Arne","first_name":"Arne"}],"publist_id":"6150","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","citation":{"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.","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","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","short":"C. Hilbe, A. Traulsen, Physics of Life Reviews 19 (2016) 29–31.","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.","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.","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."},"project":[{"_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","grant_number":"291734","name":"International IST Postdoc Fellowship Programme"}],"volume":19,"ec_funded":1,"license":"https://creativecommons.org/licenses/by-nc-nd/4.0/","file":[{"relation":"main_file","access_level":"open_access","content_type":"application/pdf","checksum":"95e6dc78278334b99dacbf8822509364","file_id":"4855","creator":"system","file_size":171352,"date_updated":"2020-07-14T12:44:39Z","file_name":"IST-2017-798-v1+1_comment_adami.pdf","date_created":"2018-12-12T10:11:02Z"}],"language":[{"iso":"eng"}],"publication_status":"published","month":"12","intvolume":" 19","scopus_import":1,"oa_version":"Submitted Version","department":[{"_id":"KrCh"}],"file_date_updated":"2020-07-14T12:44:39Z","ddc":["530"],"date_updated":"2021-01-12T06:49:03Z","status":"public","pubrep_id":"798","type":"journal_article","tmp":{"short":"CC BY-NC-ND (4.0)","name":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)","legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode","image":"/images/cc_by_nc_nd.png"},"_id":"1200"},{"language":[{"iso":"eng"}],"publication_status":"published","ec_funded":1,"issue":"Februar-2016","volume":26,"oa_version":"None","abstract":[{"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.","lang":"eng"}],"intvolume":" 26","month":"02","scopus_import":1,"date_updated":"2021-01-12T06:49:22Z","department":[{"_id":"KrCh"}],"_id":"1245","status":"public","conference":{"name":"CSCW: Computer Supported Cooperative Work and Social Computing","location":"San Francisco, CA, USA","end_date":"2016-03-02","start_date":"2016-02-26"},"type":"conference","publication":"Proceedings of the ACM Conference on Computer Supported Cooperative Work","day":"27","year":"2016","date_created":"2018-12-11T11:50:55Z","doi":"10.1145/2818052.2869122","date_published":"2016-02-27T00:00:00Z","page":"365 - 368","acknowledgement":"ERC Start Grant Graph Games 279307 supported this research. ","publisher":"ACM","quality_controlled":"1","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","citation":{"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.","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.","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.","short":"V. Pandey, K. Chatterjee, in:, Proceedings of the ACM Conference on Computer Supported Cooperative Work, ACM, 2016, pp. 365–368.","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"},"title":"Game-theoretic models identify useful principles for peer collaboration in online learning platforms","author":[{"last_name":"Pandey","full_name":"Pandey, Vineet","first_name":"Vineet"},{"last_name":"Chatterjee","full_name":"Chatterjee, Krishnendu","orcid":"0000-0002-4561-241X","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","first_name":"Krishnendu"}],"publist_id":"6083","project":[{"call_identifier":"FP7","_id":"2581B60A-B435-11E9-9278-68D0E5697425","grant_number":"279307","name":"Quantitative Graph Games: Theory and Applications"}]},{"publist_id":"5944","author":[{"first_name":"Tomáš","last_name":"Brázdil","full_name":"Brázdil, Tomáš"},{"first_name":"Vojtěch","full_name":"Forejt, Vojtěch","last_name":"Forejt"},{"last_name":"Kučera","full_name":"Kučera, Antonín","first_name":"Antonín"},{"full_name":"Novotny, Petr","last_name":"Novotny","id":"3CC3B868-F248-11E8-B48F-1D18A9856A87","first_name":"Petr"}],"title":"Stability in graphs and games","citation":{"ista":"Brázdil T, Forejt V, Kučera A, Novotný P. 2016. Stability in graphs and games. CONCUR: Concurrency Theory, LIPIcs, vol. 59, 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.","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","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.","short":"T. Brázdil, V. Forejt, A. Kučera, P. Novotný, in:, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2016.","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."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","project":[{"name":"International IST Postdoc Fellowship Programme","grant_number":"291734","_id":"25681D80-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"article_number":"10","date_created":"2018-12-11T11:51:23Z","date_published":"2016-08-01T00:00:00Z","doi":"10.4230/LIPIcs.CONCUR.2016.10","year":"2016","has_accepted_license":"1","day":"01","oa":1,"publisher":"Schloss Dagstuhl - Leibniz-Zentrum für Informatik","quality_controlled":"1","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]","file_date_updated":"2020-07-14T12:44:44Z","department":[{"_id":"KrCh"}],"date_updated":"2021-01-12T06:49:53Z","ddc":["004"],"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"conference":{"start_date":"2016-08-23","location":"Quebec City, Canada","end_date":"2016-08-26","name":"CONCUR: Concurrency Theory"},"type":"conference","pubrep_id":"665","status":"public","_id":"1325","ec_funded":1,"volume":59,"publication_status":"published","language":[{"iso":"eng"}],"file":[{"content_type":"application/pdf","access_level":"open_access","relation":"main_file","file_id":"5229","checksum":"3c2dc6ab0358f8aa8f7aa7d6c1293159","date_updated":"2020-07-14T12:44:44Z","file_size":553648,"creator":"system","date_created":"2018-12-12T10:16:40Z","file_name":"IST-2016-665-v1+1_Forejt_et_al__Stability_in_graphs_and_games.pdf"}],"alternative_title":["LIPIcs"],"scopus_import":1,"intvolume":" 59","month":"08","abstract":[{"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.","lang":"eng"}],"oa_version":"Published Version"},{"date_published":"2016-01-01T00:00:00Z","volume":"2016-January","date_created":"2018-12-11T11:51:22Z","ec_funded":1,"page":"88 - 96","day":"01","publication":"Proceedings of the Twenty-Sixth International Conference on International Conference on Automated Planning and Scheduling","language":[{"iso":"eng"}],"publication_status":"published","year":"2016","month":"01","publisher":"AAAI Press","scopus_import":1,"quality_controlled":"1","main_file_link":[{"url":"http://www.aaai.org/ocs/index.php/ICAPS/ICAPS16/paper/view/12999"}],"oa_version":"None","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 "}],"title":"Indefinite-horizon reachability in Goal-DEC-POMDPs","department":[{"_id":"KrCh"}],"author":[{"last_name":"Chatterjee","orcid":"0000-0002-4561-241X","full_name":"Chatterjee, Krishnendu","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","first_name":"Krishnendu"},{"full_name":"Chmelik, Martin","last_name":"Chmelik","id":"3624234E-F248-11E8-B48F-1D18A9856A87","first_name":"Martin"}],"publist_id":"5946","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","citation":{"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.","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.","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.","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.","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.","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."},"date_updated":"2021-01-12T06:49:53Z","project":[{"_id":"2584A770-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","grant_number":"P 23499-N23","name":"Modern Graph Algorithmic Techniques in Formal Verification"},{"name":"Quantitative Graph Games: Theory and Applications","grant_number":"279307","_id":"2581B60A-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"},{"call_identifier":"FWF","_id":"25832EC2-B435-11E9-9278-68D0E5697425","grant_number":"S 11407_N23","name":"Rigorous Systems Engineering"}],"status":"public","type":"conference","conference":{"name":"ICAPS: International Conference on Automated Planning and Scheduling","start_date":"2016-06-12","end_date":"2016-06-17","location":"London, United Kingdom"},"_id":"1324"},{"_id":"1327","type":"conference","conference":{"start_date":"2016-05-09","end_date":"2016-05-13","location":"Singapore","name":"AAMAS: Autonomous Agents & Multiagent Systems"},"project":[{"call_identifier":"FWF","_id":"2584A770-B435-11E9-9278-68D0E5697425","grant_number":"P 23499-N23","name":"Modern Graph Algorithmic Techniques in Formal Verification"},{"grant_number":"S 11407_N23","name":"Rigorous Systems Engineering","call_identifier":"FWF","_id":"25832EC2-B435-11E9-9278-68D0E5697425"},{"name":"International IST Postdoc Fellowship Programme","grant_number":"291734","call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425"},{"grant_number":"279307","name":"Quantitative Graph Games: Theory and Applications","_id":"2581B60A-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"}],"status":"public","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.","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.","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.","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.","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.","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."},"date_updated":"2021-01-12T06:49:54Z","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","author":[{"first_name":"Tomáš","full_name":"Brázdil, Tomáš","last_name":"Brázdil"},{"id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","first_name":"Krishnendu","last_name":"Chatterjee","full_name":"Chatterjee, Krishnendu","orcid":"0000-0002-4561-241X"},{"last_name":"Chmelik","full_name":"Chmelik, Martin","id":"3624234E-F248-11E8-B48F-1D18A9856A87","first_name":"Martin"},{"first_name":"Anchit","full_name":"Gupta, Anchit","last_name":"Gupta"},{"last_name":"Novotny","full_name":"Novotny, Petr","id":"3CC3B868-F248-11E8-B48F-1D18A9856A87","first_name":"Petr"}],"publist_id":"5942","title":"Stochastic shortest path with energy constraints in POMDPs","department":[{"_id":"KrCh"}],"abstract":[{"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. ","lang":"eng"}],"oa_version":"Preprint","quality_controlled":"1","publisher":"ACM","scopus_import":1,"oa":1,"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1602.07565"}],"month":"01","publication_status":"published","year":"2016","day":"01","publication":"Proceedings of the 15th International Conference on Autonomous Agents and Multiagent Systems","language":[{"iso":"eng"}],"page":"1465 - 1466","date_published":"2016-01-01T00:00:00Z","ec_funded":1,"date_created":"2018-12-11T11:51:23Z"},{"type":"conference","conference":{"start_date":"2016-10-17","location":"Chiba, Japan","end_date":"2016-10-20","name":"ATVA: Automated Technology for Verification and Analysis"},"status":"public","_id":"1326","department":[{"_id":"KrCh"}],"date_updated":"2021-01-12T06:49:53Z","alternative_title":["LNCS"],"scopus_import":1,"main_file_link":[{"url":"https://arxiv.org/abs/1607.00678","open_access":"1"}],"month":"09","intvolume":" 9938","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. "}],"oa_version":"Preprint","volume":9938,"ec_funded":1,"publication_status":"published","language":[{"iso":"eng"}],"project":[{"call_identifier":"FP7","_id":"25681D80-B435-11E9-9278-68D0E5697425","name":"International IST Postdoc Fellowship Programme","grant_number":"291734"}],"publist_id":"5943","author":[{"first_name":"Tomáš","full_name":"Brázdil, Tomáš","last_name":"Brázdil"},{"first_name":"Antonín","last_name":"Kučera","full_name":"Kučera, Antonín"},{"id":"3CC3B868-F248-11E8-B48F-1D18A9856A87","first_name":"Petr","last_name":"Novotny","full_name":"Novotny, Petr"}],"title":"Optimizing the expected mean payoff in Energy Markov Decision Processes","citation":{"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.","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","short":"T. Brázdil, A. Kučera, P. Novotný, in:, Springer, 2016, pp. 32–49.","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.","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.","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."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","quality_controlled":"1","publisher":"Springer","oa":1,"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].","page":"32 - 49","date_published":"2016-09-22T00:00:00Z","doi":"10.1007/978-3-319-46520-3_3","date_created":"2018-12-11T11:51:23Z","year":"2016","day":"22"},{"date_updated":"2021-01-12T06:49:57Z","ddc":["519","530","599"],"department":[{"_id":"KrCh"}],"file_date_updated":"2020-07-14T12:44:44Z","_id":"1333","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"type":"journal_article","pubrep_id":"661","status":"public","publication_status":"published","language":[{"iso":"eng"}],"file":[{"content_type":"application/pdf","access_level":"open_access","relation":"main_file","file_id":"4834","checksum":"9ea0d7ce59a555a1cb8353d5559407cb","date_updated":"2020-07-14T12:44:44Z","file_size":1432577,"creator":"system","date_created":"2018-12-12T10:10:44Z","file_name":"IST-2016-661-v1+1_ncomms10915.pdf"}],"volume":7,"abstract":[{"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.","lang":"eng"}],"oa_version":"Published Version","scopus_import":1,"intvolume":" 7","month":"03","citation":{"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.","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.","short":"M. Milinski, C. Hilbe, D. Semmann, R. Sommerfeld, J. Marotzke, Nature Communications 7 (2016).","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.","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."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","publist_id":"5935","author":[{"first_name":"Manfred","last_name":"Milinski","full_name":"Milinski, Manfred"},{"id":"2FDF8F3C-F248-11E8-B48F-1D18A9856A87","first_name":"Christian","orcid":"0000-0001-5116-955X","full_name":"Hilbe, Christian","last_name":"Hilbe"},{"full_name":"Semmann, Dirk","last_name":"Semmann","first_name":"Dirk"},{"first_name":"Ralf","last_name":"Sommerfeld","full_name":"Sommerfeld, Ralf"},{"first_name":"Jochem","last_name":"Marotzke","full_name":"Marotzke, Jochem"}],"title":"Humans choose representatives who enforce cooperation in social dilemmas through extortion","article_number":"10915","year":"2016","has_accepted_license":"1","publication":"Nature Communications","day":"07","date_created":"2018-12-11T11:51:25Z","doi":"10.1038/ncomms10915","date_published":"2016-03-07T00:00:00Z","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.","oa":1,"quality_controlled":"1","publisher":"Nature Publishing Group"},{"publication_status":"published","language":[{"iso":"eng"}],"volume":9837,"ec_funded":1,"abstract":[{"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.","lang":"eng"}],"oa_version":"Preprint","alternative_title":["LNCS"],"scopus_import":1,"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1604.06764"}],"month":"08","intvolume":" 9837","date_updated":"2021-01-12T06:49:58Z","department":[{"_id":"KrCh"},{"_id":"ToHe"}],"_id":"1335","type":"conference","conference":{"name":"SAS: Static Analysis Symposium","location":"Edinburgh, United Kingdom","end_date":"2016-09-10","start_date":"2016-09-08"},"status":"public","year":"2016","day":"31","page":"23 - 38","date_published":"2016-08-31T00:00:00Z","doi":"10.1007/978-3-662-53413-7_2","date_created":"2018-12-11T11:51:26Z","publisher":"Springer","quality_controlled":"1","oa":1,"citation":{"mla":"Chatterjee, Krishnendu, et al. Quantitative Monitor Automata. Vol. 9837, Springer, 2016, pp. 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","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","short":"K. Chatterjee, T.A. Henzinger, J. Otop, in:, Springer, 2016, pp. 23–38.","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.","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.","ista":"Chatterjee K, Henzinger TA, Otop J. 2016. Quantitative monitor automata. SAS: Static Analysis Symposium, LNCS, vol. 9837, 23–38."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","publist_id":"5932","author":[{"last_name":"Chatterjee","orcid":"0000-0002-4561-241X","full_name":"Chatterjee, Krishnendu","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","first_name":"Krishnendu"},{"id":"40876CD8-F248-11E8-B48F-1D18A9856A87","first_name":"Thomas A","last_name":"Henzinger","orcid":"0000−0002−2985−7724","full_name":"Henzinger, Thomas A"},{"id":"2FC5DA74-F248-11E8-B48F-1D18A9856A87","first_name":"Jan","full_name":"Otop, Jan","last_name":"Otop"}],"title":"Quantitative monitor automata","project":[{"call_identifier":"FWF","_id":"25832EC2-B435-11E9-9278-68D0E5697425","grant_number":"S 11407_N23","name":"Rigorous Systems Engineering"},{"name":"The Wittgenstein Prize","grant_number":"Z211","_id":"25F42A32-B435-11E9-9278-68D0E5697425","call_identifier":"FWF"},{"grant_number":"279307","name":"Quantitative Graph Games: Theory and Applications","_id":"2581B60A-B435-11E9-9278-68D0E5697425","call_identifier":"FP7"},{"_id":"25892FC0-B435-11E9-9278-68D0E5697425","name":"Efficient Algorithms for Computer Aided Verification","grant_number":"ICT15-003"}]},{"day":"01","year":"2016","doi":"10.1007/978-3-662-53354-3_6","date_published":"2016-09-01T00:00:00Z","date_created":"2018-12-11T11:51:28Z","page":"64 - 76","publisher":"Springer","quality_controlled":"1","oa":1,"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","citation":{"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.","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.","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","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","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.","short":"K. Hansen, R. Ibsen-Jensen, M. Koucký, in:, Springer, 2016, pp. 64–76."},"title":"The big match in small space","publist_id":"5927","author":[{"first_name":"Kristoffer","last_name":"Hansen","full_name":"Hansen, Kristoffer"},{"last_name":"Ibsen-Jensen","full_name":"Ibsen-Jensen, Rasmus","orcid":"0000-0003-4783-0389","first_name":"Rasmus","id":"3B699956-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Michal","last_name":"Koucký","full_name":"Koucký, Michal"}],"project":[{"_id":"25832EC2-B435-11E9-9278-68D0E5697425","call_identifier":"FWF","grant_number":"S 11407_N23","name":"Rigorous Systems Engineering"},{"grant_number":"ICT15-003","name":"Efficient Algorithms for Computer Aided Verification","_id":"25892FC0-B435-11E9-9278-68D0E5697425"},{"call_identifier":"FP7","_id":"2581B60A-B435-11E9-9278-68D0E5697425","grant_number":"279307","name":"Quantitative Graph Games: Theory and Applications"}],"language":[{"iso":"eng"}],"publication_status":"published","volume":9928,"ec_funded":1,"oa_version":"Preprint","abstract":[{"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].","lang":"eng"}],"month":"09","intvolume":" 9928","scopus_import":1,"alternative_title":["LNCS"],"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1604.07634"}],"date_updated":"2021-01-12T06:50:00Z","department":[{"_id":"KrCh"}],"_id":"1340","status":"public","type":"conference","conference":{"end_date":"2016-09-21","location":"Liverpool, United Kingdom","start_date":"2016-09-19","name":"SAGT: Symposium on Algorithmic Game Theory"}},{"author":[{"first_name":"Ventsislav K","id":"36CBE2E6-F248-11E8-B48F-1D18A9856A87","full_name":"Chonev, Ventsislav K","last_name":"Chonev"},{"first_name":"Joël","full_name":"Ouaknine, Joël","last_name":"Ouaknine"},{"full_name":"Worrell, James","last_name":"Worrell","first_name":"James"}],"publist_id":"5831","title":"On the complexity of the orbit problem","department":[{"_id":"KrCh"}],"citation":{"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.","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","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.","short":"V.K. Chonev, J. Ouaknine, J. Worrell, Journal of the ACM 63 (2016).","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.","ista":"Chonev VK, Ouaknine J, Worrell J. 2016. On the complexity of the orbit problem. Journal of the ACM. 63(3), 23."},"date_updated":"2021-01-12T06:50:17Z","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","type":"journal_article","status":"public","_id":"1380","article_number":"23","date_published":"2016-06-01T00:00:00Z","doi":"10.1145/2857050","issue":"3","volume":63,"date_created":"2018-12-11T11:51:41Z","publication_status":"published","year":"2016","day":"01","publication":"Journal of the ACM","language":[{"iso":"eng"}],"scopus_import":1,"publisher":"ACM","quality_controlled":"1","main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1303.2981"}],"oa":1,"month":"06","intvolume":" 63","abstract":[{"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.","lang":"eng"}],"oa_version":"Preprint"},{"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1507.03632"}],"oa":1,"scopus_import":1,"publisher":"IEEE","quality_controlled":"1","month":"07","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."}],"oa_version":"Preprint","page":"515 - 524","ec_funded":1,"date_created":"2018-12-11T11:51:44Z","date_published":"2016-07-05T00:00:00Z","doi":"10.1145/2933575.2934548","publication_status":"published","year":"2016","language":[{"iso":"eng"}],"publication":"LICS '16","day":"05","conference":{"start_date":"2018-07-05","location":"New York, NY, USA","end_date":"2018-07-08","name":"LICS: Logic in Computer Science"},"type":"conference","status":"public","project":[{"_id":"2581B60A-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","name":"Quantitative Graph Games: Theory and Applications","grant_number":"279307"},{"_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","name":"Quantitative Reactive Modeling","grant_number":"267989"}],"_id":"1389","publist_id":"5820","author":[{"full_name":"Chonev, Ventsislav K","last_name":"Chonev","first_name":"Ventsislav K","id":"36CBE2E6-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Ouaknine","full_name":"Ouaknine, Joël","first_name":"Joël"},{"last_name":"Worrell","full_name":"Worrell, James","first_name":"James"}],"department":[{"_id":"KrCh"}],"title":"On recurrent reachability for continuous linear dynamical systems","date_updated":"2021-01-12T06:50:20Z","citation":{"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.","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.","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.","short":"V.K. Chonev, J. Ouaknine, J. Worrell, in:, LICS ’16, IEEE, 2016, pp. 515–524.","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","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"},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87"},{"article_number":"160036","publist_id":"5776","author":[{"full_name":"Chakra, Maria","last_name":"Chakra","first_name":"Maria"},{"id":"2FDF8F3C-F248-11E8-B48F-1D18A9856A87","first_name":"Christian","full_name":"Hilbe, Christian","orcid":"0000-0001-5116-955X","last_name":"Hilbe"},{"full_name":"Traulsen, Arne","last_name":"Traulsen","first_name":"Arne"}],"title":"Coevolutionary interactions between farmers and mafia induce host acceptance of avian brood parasites","citation":{"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.","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.","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","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.","short":"M. Chakra, C. Hilbe, A. Traulsen, Royal Society Open Science 3 (2016).","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."},"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","oa":1,"publisher":"Royal Society, The","quality_controlled":"1","acknowledgement":"C.H. gratefully acknowledges funding by the Schrödinger scholarship of the Austrian Science Fund (FWF) J3475.","date_created":"2018-12-11T11:51:57Z","date_published":"2016-05-01T00:00:00Z","doi":"10.1098/rsos.160036","year":"2016","has_accepted_license":"1","publication":"Royal Society Open Science","day":"01","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"type":"journal_article","pubrep_id":"589","status":"public","_id":"1426","file_date_updated":"2020-07-14T12:44:53Z","department":[{"_id":"KrCh"}],"date_updated":"2021-01-12T06:50:39Z","ddc":["000"],"scopus_import":1,"intvolume":" 3","month":"05","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."}],"oa_version":"Published Version","issue":"5","volume":3,"publication_status":"published","language":[{"iso":"eng"}],"file":[{"file_name":"IST-2016-589-v1+1_160036.full.pdf","date_created":"2018-12-12T10:14:49Z","file_size":937002,"date_updated":"2020-07-14T12:44:53Z","creator":"system","file_id":"5104","checksum":"bf84211b31fe87451e738ba301d729c3","content_type":"application/pdf","relation":"main_file","access_level":"open_access"}]}]