--- _id: '3844' abstract: - lang: eng text: The Hierarchical Timing Language (HTL) is a real-time coordination language for distributed control systems. HTL programs must be checked for well-formedness, race freedom, transmission safety (schedulability of inter-host communication), and time safety (schedulability of host computation). We present a modular abstract syntax and semantics for HTL, modular checks of well-formedness, race freedom, and transmission safety, and modular code distribution. Our contributions here complement previous results on HTL time safety and modular code generation. Modularity in HTL can be utilized in easy program composition as well as fast program analysis and code generation, but also in so-called runtime patching, where program components may be modified at runtime. acknowledgement: Supported by the EU ArtistDesign Network of Excellence on Embedded Systems Design, the EU project COMBEST, the Austrian Science Funds P18913-N15 and V00125, and Fundacao para a Ciencia e Tecnologia funds SFRH/BD/29461/2006 and PTDC/EIA/71462/2006 author: - 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: Christoph full_name: Kirsch, Christoph last_name: Kirsch - first_name: Eduardo full_name: Marques, Eduardo last_name: Marques - first_name: Ana full_name: Sokolova, Ana last_name: Sokolova citation: ama: 'Henzinger TA, Kirsch C, Marques E, Sokolova A. Distributed, modular HTL. In: IEEE; 2009:171-180. doi:10.1109/RTSS.2009.9' apa: 'Henzinger, T. A., Kirsch, C., Marques, E., & Sokolova, A. (2009). Distributed, modular HTL (pp. 171–180). Presented at the RTSS: Real-Time Systems Symposium, Washington, DC, United States: IEEE. https://doi.org/10.1109/RTSS.2009.9' chicago: Henzinger, Thomas A, Christoph Kirsch, Eduardo Marques, and Ana Sokolova. “Distributed, Modular HTL,” 171–80. IEEE, 2009. https://doi.org/10.1109/RTSS.2009.9. ieee: 'T. A. Henzinger, C. Kirsch, E. Marques, and A. Sokolova, “Distributed, modular HTL,” presented at the RTSS: Real-Time Systems Symposium, Washington, DC, United States, 2009, pp. 171–180.' ista: 'Henzinger TA, Kirsch C, Marques E, Sokolova A. 2009. Distributed, modular HTL. RTSS: Real-Time Systems Symposium, 171–180.' mla: Henzinger, Thomas A., et al. Distributed, Modular HTL. IEEE, 2009, pp. 171–80, doi:10.1109/RTSS.2009.9. short: T.A. Henzinger, C. Kirsch, E. Marques, A. Sokolova, in:, IEEE, 2009, pp. 171–180. conference: end_date: 2009-12-04 location: Washington, DC, United States name: 'RTSS: Real-Time Systems Symposium' start_date: 2009-12-01 date_created: 2018-12-11T12:05:28Z date_published: 2009-01-01T00:00:00Z date_updated: 2021-01-12T07:52:36Z day: '01' ddc: - '000' department: - _id: ToHe doi: 10.1109/RTSS.2009.9 ec_funded: 1 file: - access_level: open_access checksum: b2b15a5ef71eb50d62eaa5aea7efd8c4 content_type: application/pdf creator: system date_created: 2018-12-12T10:07:56Z date_updated: 2020-07-14T12:46:17Z file_id: '4655' file_name: IST-2012-65-v1+1_Distributed_modular_Htl.pdf file_size: 526458 relation: main_file file_date_updated: 2020-07-14T12:46:17Z has_accepted_license: '1' language: - iso: eng month: '01' oa: 1 oa_version: Submitted Version page: 171 - 180 project: - _id: 25F1337C-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '214373' name: Design for Embedded Systems - _id: 25EFB36C-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '215543' name: COMponent-Based Embedded Systems design Techniques publication_status: published publisher: IEEE publist_id: '2346' pubrep_id: '65' quality_controlled: '1' status: public title: Distributed, modular HTL type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2009' ... --- _id: '3837' abstract: - lang: eng text: In this paper we extend the work of Alfaro, Henzinger et al. on interface theories for component-based design. Existing interface theories often fail to capture functional relations between the inputs and outputs of an interface. For example, a simple synchronous interface that takes as input a number n ≥ 0 and returns, at the same time, as output n + 1, cannot be expressed in existing theories. In this paper we provide a theory of relational interfaces, where such input-output relations can be captured. Our theory supports synchronous interfaces, both stateless and stateful. It includes explicit notions of environments and pluggability, and satisfies fundamental properties such as preservation of refinement by composition, and characterization of pluggability by refinement. We achieve these properties by making reasonable restrictions on feedback loops in interface compositions. acknowledgement: 'This work is supported by the Center for Hybrid and Embedded Software Systems (CHESS) at UC Berkeley, which receives support from the National Science Foundation (NSF awards #0720882 (CSR-EHS: PRET) and #0720841 (CSR-CPS)), the U.S. Army Research Office (ARO #W911NF-07-2-0019), the U.S. Air Force Office of Scientific Research (MURI #FA9550-06-0312), the Air Force Research Lab (AFRL), the State of California Micro Program, and the following companies: Agilent, Bosch, Lockheed-Martin, National Instruments, Thales and Toyota. This work is also supported by the COMBEST and ArtistDesign projects of the European Union, and the Swiss National Science Foundation. ' author: - first_name: Stavros full_name: Tripakis, Stavros last_name: Tripakis - first_name: Ben full_name: Lickly, Ben last_name: Lickly - 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: Edward full_name: Lee, Edward last_name: Lee citation: ama: 'Tripakis S, Lickly B, Henzinger TA, Lee E. On relational interfaces. In: EMSOFT ’09 Proceedings of the Seventh ACM International Conference on Embedded Software. ACM; 2009:67-76. doi:10.1145/1629335.1629346' apa: 'Tripakis, S., Lickly, B., Henzinger, T. A., & Lee, E. (2009). On relational interfaces. In EMSOFT ’09 Proceedings of the seventh ACM international conference on Embedded software (pp. 67–76). Grenoble, France: ACM. https://doi.org/10.1145/1629335.1629346' chicago: Tripakis, Stavros, Ben Lickly, Thomas A Henzinger, and Edward Lee. “On Relational Interfaces.” In EMSOFT ’09 Proceedings of the Seventh ACM International Conference on Embedded Software, 67–76. ACM, 2009. https://doi.org/10.1145/1629335.1629346. ieee: S. Tripakis, B. Lickly, T. A. Henzinger, and E. Lee, “On relational interfaces,” in EMSOFT ’09 Proceedings of the seventh ACM international conference on Embedded software, Grenoble, France, 2009, pp. 67–76. ista: 'Tripakis S, Lickly B, Henzinger TA, Lee E. 2009. On relational interfaces. EMSOFT ’09 Proceedings of the seventh ACM international conference on Embedded software. EMSOFT: Embedded Software , 67–76.' mla: Tripakis, Stavros, et al. “On Relational Interfaces.” EMSOFT ’09 Proceedings of the Seventh ACM International Conference on Embedded Software, ACM, 2009, pp. 67–76, doi:10.1145/1629335.1629346. short: S. Tripakis, B. Lickly, T.A. Henzinger, E. Lee, in:, EMSOFT ’09 Proceedings of the Seventh ACM International Conference on Embedded Software, ACM, 2009, pp. 67–76. conference: end_date: 2009-10-16 location: Grenoble, France name: 'EMSOFT: Embedded Software ' start_date: 2009-10-12 date_created: 2018-12-11T12:05:26Z date_published: 2009-01-01T00:00:00Z date_updated: 2021-01-12T07:52:33Z day: '01' ddc: - '004' department: - _id: ToHe doi: 10.1145/1629335.1629346 ec_funded: 1 file: - access_level: open_access checksum: 3a70e21527dfaad2f198549ae5710786 content_type: application/pdf creator: system date_created: 2018-12-12T10:13:57Z date_updated: 2020-07-14T12:46:16Z file_id: '5045' file_name: IST-2012-70-v1+1_On_Relational_Interfaces.pdf file_size: 310902 relation: main_file file_date_updated: 2020-07-14T12:46:16Z has_accepted_license: '1' language: - iso: eng month: '01' oa: 1 oa_version: Submitted Version page: 67 - 76 project: - _id: 25EFB36C-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '215543' name: COMponent-Based Embedded Systems design Techniques - _id: 25F1337C-B435-11E9-9278-68D0E5697425 call_identifier: FP7 grant_number: '214373' name: Design for Embedded Systems publication: EMSOFT '09 Proceedings of the seventh ACM international conference on Embedded software publication_status: published publisher: ACM publist_id: '2360' pubrep_id: '70' quality_controlled: '1' status: public title: On relational interfaces type: conference user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2009' ... --- _id: '5393' abstract: - lang: eng text: Gist is a tool that (a) solves the qualitative analysis problem of turn-based probabilistic games with ω-regular objectives; and (b) synthesizes reasonable environment assumptions for synthesis of unrealizable specifications. Our tool provides efficient implementations of several reduction based techniques to solve turn-based probabilistic games, and uses the analysis of turn-based probabilistic games for synthesizing environment assumptions for unrealizable specifications. alternative_title: - IST Austria Technical Report 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: Barbara full_name: Jobstmann, Barbara last_name: Jobstmann - first_name: Arjun full_name: Radhakrishna, Arjun id: 3B51CAC4-F248-11E8-B48F-1D18A9856A87 last_name: Radhakrishna citation: ama: 'Chatterjee K, Henzinger TA, Jobstmann B, Radhakrishna A. Gist: A Solver for Probabilistic Games. IST Austria; 2009. doi:10.15479/AT:IST-2009-0003' apa: 'Chatterjee, K., Henzinger, T. A., Jobstmann, B., & Radhakrishna, A. (2009). Gist: A solver for probabilistic games. IST Austria. https://doi.org/10.15479/AT:IST-2009-0003' chicago: 'Chatterjee, Krishnendu, Thomas A Henzinger, Barbara Jobstmann, and Arjun Radhakrishna. Gist: A Solver for Probabilistic Games. IST Austria, 2009. https://doi.org/10.15479/AT:IST-2009-0003.' ieee: 'K. Chatterjee, T. A. Henzinger, B. Jobstmann, and A. Radhakrishna, Gist: A solver for probabilistic games. IST Austria, 2009.' ista: 'Chatterjee K, Henzinger TA, Jobstmann B, Radhakrishna A. 2009. Gist: A solver for probabilistic games, IST Austria, 12p.' mla: 'Chatterjee, Krishnendu, et al. Gist: A Solver for Probabilistic Games. IST Austria, 2009, doi:10.15479/AT:IST-2009-0003.' short: 'K. Chatterjee, T.A. Henzinger, B. Jobstmann, A. Radhakrishna, Gist: A Solver for Probabilistic Games, IST Austria, 2009.' date_created: 2018-12-12T11:39:05Z date_published: 2009-10-09T00:00:00Z date_updated: 2023-02-23T12:09:01Z day: '09' ddc: - '000' - '005' department: - _id: KrCh - _id: ToHe doi: 10.15479/AT:IST-2009-0003 file: - access_level: open_access checksum: 49551ac552915b17593a14c993845274 content_type: application/pdf creator: system date_created: 2018-12-12T11:52:58Z date_updated: 2020-07-14T12:46:43Z file_id: '5459' file_name: IST-2009-0003_IST-2009-0003.pdf file_size: 386866 relation: main_file file_date_updated: 2020-07-14T12:46:43Z has_accepted_license: '1' language: - iso: eng month: '10' oa: 1 oa_version: Published Version page: '12' publication_identifier: issn: - 2664-1690 publication_status: published publisher: IST Austria pubrep_id: '29' related_material: record: - id: '4388' relation: later_version status: public status: public title: 'Gist: A solver for probabilistic games' type: technical_report user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2009' ... --- _id: '5394' abstract: - lang: eng text: We consider two-player games played on graphs with request-response and finitary Streett objectives. We show these games are PSPACE-hard, improving the previous known NP-hardness. We also improve the lower bounds on memory required by the winning strategies for the players. alternative_title: - IST Austria Technical Report 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: Florian full_name: Horn, Florian id: 37327ACE-F248-11E8-B48F-1D18A9856A87 last_name: Horn citation: ama: Chatterjee K, Henzinger TA, Horn F. Improved Lower Bounds for Request-Response and Finitary Streett Games. IST Austria; 2009. doi:10.15479/AT:IST-2009-0002 apa: Chatterjee, K., Henzinger, T. A., & Horn, F. (2009). Improved lower bounds for request-response and finitary Streett games. IST Austria. https://doi.org/10.15479/AT:IST-2009-0002 chicago: Chatterjee, Krishnendu, Thomas A Henzinger, and Florian Horn. Improved Lower Bounds for Request-Response and Finitary Streett Games. IST Austria, 2009. https://doi.org/10.15479/AT:IST-2009-0002. ieee: K. Chatterjee, T. A. Henzinger, and F. Horn, Improved lower bounds for request-response and finitary Streett games. IST Austria, 2009. ista: Chatterjee K, Henzinger TA, Horn F. 2009. Improved lower bounds for request-response and finitary Streett games, IST Austria, 11p. mla: Chatterjee, Krishnendu, et al. Improved Lower Bounds for Request-Response and Finitary Streett Games. IST Austria, 2009, doi:10.15479/AT:IST-2009-0002. short: K. Chatterjee, T.A. Henzinger, F. Horn, Improved Lower Bounds for Request-Response and Finitary Streett Games, IST Austria, 2009. date_created: 2018-12-12T11:39:05Z date_published: 2009-09-09T00:00:00Z date_updated: 2020-07-14T23:07:47Z day: '09' ddc: - '004' department: - _id: KrCh - _id: ToHe doi: 10.15479/AT:IST-2009-0002 file: - access_level: open_access checksum: 1c50a9723fbae1b2c46d18138968efb3 content_type: application/pdf creator: system date_created: 2018-12-12T11:53:50Z date_updated: 2020-07-14T12:46:43Z file_id: '5511' file_name: IST-2009-0002_IST-2009-0002.pdf file_size: 238091 relation: main_file file_date_updated: 2020-07-14T12:46:43Z has_accepted_license: '1' language: - iso: eng month: '09' oa: 1 oa_version: Published Version page: '11' publication_identifier: issn: - 2664-1690 publication_status: published publisher: IST Austria pubrep_id: '30' status: public title: Improved lower bounds for request-response and finitary Streett games type: technical_report user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2009' ... --- _id: '5395' abstract: - lang: eng text: 'We study observation-based strategies for partially-observable Markov decision processes (POMDPs) with omega-regular objectives. An observation-based strategy relies on partial information about the history of a play, namely, on the past sequence of observa- tions. We consider the qualitative analysis problem: given a POMDP with an omega-regular objective, whether there is an observation-based strategy to achieve the objective with probability 1 (almost-sure winning), or with positive probability (positive winning). Our main results are twofold. First, we present a complete picture of the computational complexity of the qualitative analysis of POMDPs with parity objectives (a canonical form to express omega-regular objectives) and its subclasses. Our contribution consists in establishing several upper and lower bounds that were not known in literature. Second, we present optimal bounds (matching upper and lower bounds) on the memory required by pure and randomized observation-based strategies for the qualitative analysis of POMDPs with parity objectives and its subclasses.' alternative_title: - IST Austria Technical Report 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. Qualitative Analysis of Partially-Observable Markov Decision Processes. IST Austria; 2009. doi:10.15479/AT:IST-2009-0001 apa: Chatterjee, K., Doyen, L., & Henzinger, T. A. (2009). Qualitative analysis of partially-observable Markov decision processes. IST Austria. https://doi.org/10.15479/AT:IST-2009-0001 chicago: Chatterjee, Krishnendu, Laurent Doyen, and Thomas A Henzinger. Qualitative Analysis of Partially-Observable Markov Decision Processes. IST Austria, 2009. https://doi.org/10.15479/AT:IST-2009-0001. ieee: K. Chatterjee, L. Doyen, and T. A. Henzinger, Qualitative analysis of partially-observable Markov decision processes. IST Austria, 2009. ista: Chatterjee K, Doyen L, Henzinger TA. 2009. Qualitative analysis of partially-observable Markov decision processes, IST Austria, 20p. mla: Chatterjee, Krishnendu, et al. Qualitative Analysis of Partially-Observable Markov Decision Processes. IST Austria, 2009, doi:10.15479/AT:IST-2009-0001. short: K. Chatterjee, L. Doyen, T.A. Henzinger, Qualitative Analysis of Partially-Observable Markov Decision Processes, IST Austria, 2009. date_created: 2018-12-12T11:39:05Z date_published: 2009-09-09T00:00:00Z date_updated: 2023-02-23T11:45:39Z day: '09' ddc: - '005' department: - _id: KrCh - _id: ToHe doi: 10.15479/AT:IST-2009-0001 file: - access_level: open_access checksum: 04d9cc065cc19598a4e8631c47f1a562 content_type: application/pdf creator: system date_created: 2018-12-12T11:53:25Z date_updated: 2020-07-14T12:46:43Z file_id: '5486' file_name: IST-2009-0001_IST-2009-0001.pdf file_size: 342088 relation: main_file file_date_updated: 2020-07-14T12:46:43Z has_accepted_license: '1' language: - iso: eng month: '09' oa: 1 oa_version: Published Version page: '20' publication_identifier: issn: - 2664-1690 publication_status: published publisher: IST Austria pubrep_id: '31' related_material: record: - id: '3855' relation: later_version status: public status: public title: Qualitative analysis of partially-observable Markov decision processes type: technical_report user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87 year: '2009' ...