[{"corr_author":"1","language":[{"iso":"eng"}],"publist_id":"2253","scopus_import":"1","publication":"IEEE Transactions of Visualization and Computer Graphics","oa_version":"Submitted Version","year":"2010","day":"28","date_updated":"2025-09-30T09:30:22Z","volume":16,"month":"10","pubrep_id":"536","status":"public","page":"1251 - 1260","oa":1,"doi":"10.1109/TVCG.2010.139","publisher":"IEEE","quality_controlled":"1","publication_status":"published","type":"journal_article","_id":"3901","abstract":[{"text":"We are interested in 3-dimensional images given as arrays of voxels with intensity values. Extending these values to acontinuous function, we study the robustness of homology classes in its level and interlevel sets, that is, the amount of perturbationneeded to destroy these classes. The structure of the homology classes and their robustness, over all level and interlevel sets, can bevisualized by a triangular diagram of dots obtained by computing the extended persistence of the function. We give a fast hierarchicalalgorithm using the dual complexes of oct-tree approximations of the function. In addition, we show that for balanced oct-trees, thedual complexes are geometrically realized in $R^3$ and can thus be used to construct level and interlevel sets. We apply these tools tostudy 3-dimensional images of plant root systems.","lang":"eng"}],"file_date_updated":"2020-07-14T12:46:21Z","citation":{"short":"P. Bendich, H. Edelsbrunner, M. Kerber, IEEE Transactions of Visualization and Computer Graphics 16 (2010) 1251–1260.","ista":"Bendich P, Edelsbrunner H, Kerber M. 2010. Computing robustness and persistence for images. IEEE Transactions of Visualization and Computer Graphics. 16(6), 1251–1260.","chicago":"Bendich, Paul, Herbert Edelsbrunner, and Michael Kerber. “Computing Robustness and Persistence for Images.” <i>IEEE Transactions of Visualization and Computer Graphics</i>. IEEE, 2010. <a href=\"https://doi.org/10.1109/TVCG.2010.139\">https://doi.org/10.1109/TVCG.2010.139</a>.","apa":"Bendich, P., Edelsbrunner, H., &#38; Kerber, M. (2010). Computing robustness and persistence for images. <i>IEEE Transactions of Visualization and Computer Graphics</i>. IEEE. <a href=\"https://doi.org/10.1109/TVCG.2010.139\">https://doi.org/10.1109/TVCG.2010.139</a>","ieee":"P. Bendich, H. Edelsbrunner, and M. Kerber, “Computing robustness and persistence for images,” <i>IEEE Transactions of Visualization and Computer Graphics</i>, vol. 16, no. 6. IEEE, pp. 1251–1260, 2010.","ama":"Bendich P, Edelsbrunner H, Kerber M. Computing robustness and persistence for images. <i>IEEE Transactions of Visualization and Computer Graphics</i>. 2010;16(6):1251-1260. doi:<a href=\"https://doi.org/10.1109/TVCG.2010.139\">10.1109/TVCG.2010.139</a>","mla":"Bendich, Paul, et al. “Computing Robustness and Persistence for Images.” <i>IEEE Transactions of Visualization and Computer Graphics</i>, vol. 16, no. 6, IEEE, 2010, pp. 1251–60, doi:<a href=\"https://doi.org/10.1109/TVCG.2010.139\">10.1109/TVCG.2010.139</a>."},"article_processing_charge":"No","date_published":"2010-10-28T00:00:00Z","title":"Computing robustness and persistence for images","file":[{"file_name":"IST-2016-536-v1+1_2010-J-02-PersistenceforImages.pdf","content_type":"application/pdf","creator":"system","file_size":721994,"checksum":"f6d813c04f4b46023cec6b9a17f15472","file_id":"5262","relation":"main_file","date_created":"2018-12-12T10:17:10Z","date_updated":"2020-07-14T12:46:21Z","access_level":"open_access"}],"isi":1,"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2018-12-11T12:05:47Z","author":[{"first_name":"Paul","last_name":"Bendich","full_name":"Bendich, Paul","id":"43F6EC54-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Edelsbrunner, Herbert","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9823-6833","last_name":"Edelsbrunner","first_name":"Herbert"},{"id":"36E4574A-F248-11E8-B48F-1D18A9856A87","full_name":"Kerber, Michael","last_name":"Kerber","first_name":"Michael","orcid":"0000-0002-8030-9299"}],"issue":"6","has_accepted_license":"1","department":[{"_id":"HeEd"}],"external_id":{"isi":["000283758600045"]},"intvolume":"        16","ddc":["000"]},{"degree_awarded":"PhD","day":"01","citation":{"chicago":"Pflicke, Holger. “  Dendritic Cell Migration across Basement Membranes in the Skin.” Institute of Science and Technology Austria, 2010.","apa":"Pflicke, H. (2010). <i>  Dendritic cell migration across basement membranes in the skin</i>. Institute of Science and Technology Austria.","ista":"Pflicke H. 2010.   Dendritic cell migration across basement membranes in the skin. Institute of Science and Technology Austria.","short":"H. Pflicke,   Dendritic Cell Migration across Basement Membranes in the Skin, Institute of Science and Technology Austria, 2010.","mla":"Pflicke, Holger. <i>  Dendritic Cell Migration across Basement Membranes in the Skin</i>. Institute of Science and Technology Austria, 2010.","ama":"Pflicke H.   Dendritic cell migration across basement membranes in the skin. 2010.","ieee":"H. Pflicke, “  Dendritic cell migration across basement membranes in the skin,” Institute of Science and Technology Austria, 2010."},"publication_identifier":{"issn":["2663-337X"]},"date_published":"2010-07-01T00:00:00Z","article_processing_charge":"No","_id":"3962","year":"2010","oa_version":"None","publication_status":"published","type":"dissertation","publist_id":"2165","publisher":"Institute of Science and Technology Austria","language":[{"iso":"eng"}],"corr_author":"1","status":"public","department":[{"_id":"CaHe"},{"_id":"GradSch"}],"month":"07","author":[{"last_name":"Pflicke","first_name":"Holger","id":"CAA57A9A-5B61-11E9-B130-E0C1E1F2C83D","full_name":"Pflicke, Holger"}],"supervisor":[{"last_name":"Heisenberg","first_name":"Carl-Philipp J","orcid":"0000-0002-0912-4566","id":"39427864-F248-11E8-B48F-1D18A9856A87","full_name":"Heisenberg, Carl-Philipp J"}],"user_id":"ba8df636-2132-11f1-aed0-ed93e2281fdd","date_created":"2018-12-11T12:06:08Z","alternative_title":["ISTA Thesis"],"date_updated":"2026-04-09T14:37:07Z","title":"Dendritic cell migration across basement membranes in the skin","OA_place":"publisher"},{"scopus_import":"1","oa_version":"None","publication":"Ecology Letters","language":[{"iso":"eng"}],"publist_id":"1987","day":"15","year":"2010","date_updated":"2025-09-30T09:29:55Z","volume":13,"page":"485 - 494","month":"03","status":"public","acknowledgement":"We are very grateful to Nick Barton.","publication_status":"published","type":"journal_article","doi":"10.1111/j.1461-0248.2010.01442.x","publisher":"Wiley-Blackwell","quality_controlled":"1","citation":{"ieee":"J. Bridle, J. Polechova, M. Kawata, and R. Butlin, “Why is adaptation prevented at ecological margins? New insights from individual-based simulations,” <i>Ecology Letters</i>, vol. 13, no. 4. Wiley-Blackwell, pp. 485–494, 2010.","ama":"Bridle J, Polechova J, Kawata M, Butlin R. Why is adaptation prevented at ecological margins? New insights from individual-based simulations. <i>Ecology Letters</i>. 2010;13(4):485-494. doi:<a href=\"https://doi.org/10.1111/j.1461-0248.2010.01442.x\">10.1111/j.1461-0248.2010.01442.x</a>","mla":"Bridle, Jon, et al. “Why Is Adaptation Prevented at Ecological Margins? New Insights from Individual-Based Simulations.” <i>Ecology Letters</i>, vol. 13, no. 4, Wiley-Blackwell, 2010, pp. 485–94, doi:<a href=\"https://doi.org/10.1111/j.1461-0248.2010.01442.x\">10.1111/j.1461-0248.2010.01442.x</a>.","short":"J. Bridle, J. Polechova, M. Kawata, R. Butlin, Ecology Letters 13 (2010) 485–494.","ista":"Bridle J, Polechova J, Kawata M, Butlin R. 2010. Why is adaptation prevented at ecological margins? New insights from individual-based simulations. Ecology Letters. 13(4), 485–494.","chicago":"Bridle, Jon, Jitka Polechova, Masakado Kawata, and Roger Butlin. “Why Is Adaptation Prevented at Ecological Margins? New Insights from Individual-Based Simulations.” <i>Ecology Letters</i>. Wiley-Blackwell, 2010. <a href=\"https://doi.org/10.1111/j.1461-0248.2010.01442.x\">https://doi.org/10.1111/j.1461-0248.2010.01442.x</a>.","apa":"Bridle, J., Polechova, J., Kawata, M., &#38; Butlin, R. (2010). Why is adaptation prevented at ecological margins? New insights from individual-based simulations. <i>Ecology Letters</i>. Wiley-Blackwell. <a href=\"https://doi.org/10.1111/j.1461-0248.2010.01442.x\">https://doi.org/10.1111/j.1461-0248.2010.01442.x</a>"},"date_published":"2010-03-15T00:00:00Z","article_processing_charge":"No","ec_funded":1,"_id":"4134","abstract":[{"lang":"eng","text":"All species are restricted in their distribution. Currently, ecological models can only explain such limits if patches vary in quality, leading to asymmetrical dispersal, or if genetic variation is too low at the margins for adaptation. However, population genetic models suggest that the increase in genetic variance resulting from dispersal should allow adaptation to almost any ecological gradient. Clearly therefore, these models miss something that prevents evolution in natural populations. We developed an individual-based simulation to explore stochastic effects in these models. At high carrying capacities, our simulations largely agree with deterministic predictions. However, when carrying capacity is low, the population fails to establish for a wide range of parameter values where adaptation was expected from previous models. Stochastic or transient effects appear critical around the boundaries in parameter space between simulation behaviours. Dispersal, gradient steepness, and population density emerge as key factors determining adaptation on an ecological gradient. "}],"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2018-12-11T12:07:08Z","project":[{"call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme","_id":"25681D80-B435-11E9-9278-68D0E5697425","grant_number":"291734"}],"author":[{"last_name":"Bridle","first_name":"Jon","full_name":"Bridle, Jon"},{"orcid":"0000-0003-0951-3112","last_name":"Polechova","first_name":"Jitka","full_name":"Polechova, Jitka","id":"3BBFB084-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Kawata, Masakado","first_name":"Masakado","last_name":"Kawata"},{"full_name":"Butlin, Roger","last_name":"Butlin","first_name":"Roger"}],"issue":"4","title":"Why is adaptation prevented at ecological margins? New insights from individual-based simulations","isi":1,"intvolume":"        13","external_id":{"isi":["000275635400008"]},"department":[{"_id":"NiBa"}]},{"external_id":{"isi":["000281006400009"],"pmid":["20717145"]},"intvolume":"        29","department":[{"_id":"Bio"},{"_id":"CaHe"}],"issue":"16","author":[{"id":"41DB591E-F248-11E8-B48F-1D18A9856A87","full_name":"Papusheva, Ekaterina","first_name":"Ekaterina","last_name":"Papusheva"},{"orcid":"0000-0002-0912-4566","last_name":"Heisenberg","first_name":"Carl-Philipp J","full_name":"Heisenberg, Carl-Philipp J","id":"39427864-F248-11E8-B48F-1D18A9856A87"}],"date_created":"2018-12-11T12:07:17Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","isi":1,"title":"Spatial organization of adhesion: force-dependent regulation and function in tissue morphogenesis","pmid":1,"article_processing_charge":"No","date_published":"2010-08-18T00:00:00Z","citation":{"short":"E. Papusheva, C.-P.J. Heisenberg, EMBO Journal 29 (2010) 2753–2768.","ista":"Papusheva E, Heisenberg C-PJ. 2010. Spatial organization of adhesion: force-dependent regulation and function in tissue morphogenesis. EMBO Journal. 29(16), 2753–2768.","apa":"Papusheva, E., &#38; Heisenberg, C.-P. J. (2010). Spatial organization of adhesion: force-dependent regulation and function in tissue morphogenesis. <i>EMBO Journal</i>. Wiley-Blackwell. <a href=\"https://doi.org/10.1038/emboj.2010.182\">https://doi.org/10.1038/emboj.2010.182</a>","chicago":"Papusheva, Ekaterina, and Carl-Philipp J Heisenberg. “Spatial Organization of Adhesion: Force-Dependent Regulation and Function in Tissue Morphogenesis.” <i>EMBO Journal</i>. Wiley-Blackwell, 2010. <a href=\"https://doi.org/10.1038/emboj.2010.182\">https://doi.org/10.1038/emboj.2010.182</a>.","ieee":"E. Papusheva and C.-P. J. Heisenberg, “Spatial organization of adhesion: force-dependent regulation and function in tissue morphogenesis,” <i>EMBO Journal</i>, vol. 29, no. 16. Wiley-Blackwell, pp. 2753–2768, 2010.","ama":"Papusheva E, Heisenberg C-PJ. Spatial organization of adhesion: force-dependent regulation and function in tissue morphogenesis. <i>EMBO Journal</i>. 2010;29(16):2753-2768. doi:<a href=\"https://doi.org/10.1038/emboj.2010.182\">10.1038/emboj.2010.182</a>","mla":"Papusheva, Ekaterina, and Carl-Philipp J. Heisenberg. “Spatial Organization of Adhesion: Force-Dependent Regulation and Function in Tissue Morphogenesis.” <i>EMBO Journal</i>, vol. 29, no. 16, Wiley-Blackwell, 2010, pp. 2753–68, doi:<a href=\"https://doi.org/10.1038/emboj.2010.182\">10.1038/emboj.2010.182</a>."},"abstract":[{"lang":"eng","text":"Integrin- and cadherin-mediated adhesion is central for cell and tissue morphogenesis, allowing cells and tissues to change shape without loosing integrity. Studies predominantly in cell culture showed that mechanosensation through adhesion structures is achieved by force-mediated modulation of their molecular composition. The specific molecular composition of adhesion sites in turn determines their signalling activity and dynamic reorganization. Here, we will review how adhesion sites respond to mecanical stimuli, and how spatially and temporally regulated signalling from different adhesion sites controls cell migration and tissue morphogenesis."}],"_id":"4157","main_file_link":[{"url":"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2924654/","open_access":"1"}],"publication_status":"published","type":"journal_article","quality_controlled":"1","publisher":"Wiley-Blackwell","oa":1,"doi":"10.1038/emboj.2010.182","page":"2753 - 2768","status":"public","month":"08","volume":29,"date_updated":"2025-09-30T09:29:30Z","day":"18","acknowledged_ssus":[{"_id":"Bio"}],"year":"2010","oa_version":"Submitted Version","publication":"EMBO Journal","scopus_import":"1","publist_id":"1962","language":[{"iso":"eng"}]},{"quality_controlled":"1","doi":"10.1214/EJP.v15-741","publisher":"Institute of Mathematical Statistics","oa":1,"publication_status":"published","type":"journal_article","_id":"4243","file_date_updated":"2020-07-14T12:46:26Z","abstract":[{"text":"We investigate a new model for populations evolving in a spatial continuum. This model can be thought of as a spatial version of the Lambda-Fleming-Viot process. It explicitly incorporates both small scale reproduction events and large scale extinction-recolonisation events. The lineages ancestral to a sample from a population evolving according to this model can be described in terms of a spatial version of the Lambda-coalescent. Using a technique of Evans (1997), we prove existence and uniqueness in law for the model. We then investigate the asymptotic behaviour of the genealogy of a finite number of individuals sampled uniformly at random (or more generally `far enough apart') from a two-dimensional torus of sidelength L as L tends to infinity. Under appropriate conditions (and on a suitable timescale) we can obtain as limiting genealogical processes a Kingman coalescent, a more general Lambda-coalescent or a system of coalescing Brownian motions (with a non-local coalescence mechanism).","lang":"eng"}],"citation":{"ieee":"N. H. Barton, A. Etheridge, and A. Véber, “A new model for evolution in a spatial continuum,” <i>Electronic Journal of Probability</i>, vol. 15, no. 7. Institute of Mathematical Statistics, pp. 162–216, 2010.","mla":"Barton, Nicholas H., et al. “A New Model for Evolution in a Spatial Continuum.” <i>Electronic Journal of Probability</i>, vol. 15, no. 7, Institute of Mathematical Statistics, 2010, pp. 162–216, doi:<a href=\"https://doi.org/10.1214/EJP.v15-741\">10.1214/EJP.v15-741</a>.","ama":"Barton NH, Etheridge A, Véber A. A new model for evolution in a spatial continuum. <i>Electronic Journal of Probability</i>. 2010;15(7):162-216. doi:<a href=\"https://doi.org/10.1214/EJP.v15-741\">10.1214/EJP.v15-741</a>","ista":"Barton NH, Etheridge A, Véber A. 2010. A new model for evolution in a spatial continuum. Electronic Journal of Probability. 15(7), 162–216.","short":"N.H. Barton, A. Etheridge, A. Véber, Electronic Journal of Probability 15 (2010) 162–216.","apa":"Barton, N. H., Etheridge, A., &#38; Véber, A. (2010). A new model for evolution in a spatial continuum. <i>Electronic Journal of Probability</i>. Institute of Mathematical Statistics. <a href=\"https://doi.org/10.1214/EJP.v15-741\">https://doi.org/10.1214/EJP.v15-741</a>","chicago":"Barton, Nicholas H, Alison Etheridge, and Amandine Véber. “A New Model for Evolution in a Spatial Continuum.” <i>Electronic Journal of Probability</i>. Institute of Mathematical Statistics, 2010. <a href=\"https://doi.org/10.1214/EJP.v15-741\">https://doi.org/10.1214/EJP.v15-741</a>."},"date_published":"2010-02-03T00:00:00Z","article_processing_charge":"No","file":[{"file_name":"IST-2015-369-v1+1_741-2535-1-PB.pdf","checksum":"bab577546dd4e8f882e9a9dd645cd01e","content_type":"application/pdf","file_size":450171,"creator":"system","file_id":"5140","relation":"main_file","date_created":"2018-12-12T10:15:21Z","access_level":"open_access","date_updated":"2020-07-14T12:46:26Z"}],"isi":1,"title":"A new model for evolution in a spatial continuum","author":[{"orcid":"0000-0002-8548-5240","last_name":"Barton","first_name":"Nicholas H","full_name":"Barton, Nicholas H","id":"4880FE40-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Etheridge","first_name":"Alison","full_name":"Etheridge, Alison"},{"full_name":"Véber, Amandine","first_name":"Amandine","last_name":"Véber"}],"issue":"7","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2018-12-11T12:07:48Z","department":[{"_id":"NiBa"}],"has_accepted_license":"1","ddc":["576"],"intvolume":"        15","external_id":{"isi":["000274822400001"]},"publist_id":"1863","language":[{"iso":"eng"}],"oa_version":"Published Version","publication":"Electronic Journal of Probability","scopus_import":"1","year":"2010","day":"03","date_updated":"2025-09-30T09:28:54Z","volume":15,"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)"},"status":"public","month":"02","pubrep_id":"369","page":"162 - 216"},{"publisher":"Public Library of Science","doi":"10.1371/journal.pbio.1000429.s003","oa_version":"Published Version","type":"research_data_reference","year":"2010","_id":"9764","article_processing_charge":"No","date_published":"2010-07-20T00:00:00Z","citation":{"ista":"Rosas U, Barton NH, Copsey L, Barbier De Reuille P, Coen E. 2010. Heterosis and the drift load, Public Library of Science, <a href=\"https://doi.org/10.1371/journal.pbio.1000429.s003\">10.1371/journal.pbio.1000429.s003</a>.","short":"U. Rosas, N.H. Barton, L. Copsey, P. Barbier De Reuille, E. Coen, (2010).","apa":"Rosas, U., Barton, N. H., Copsey, L., Barbier De Reuille, P., &#38; Coen, E. (2010). Heterosis and the drift load. Public Library of Science. <a href=\"https://doi.org/10.1371/journal.pbio.1000429.s003\">https://doi.org/10.1371/journal.pbio.1000429.s003</a>","chicago":"Rosas, Ulises, Nicholas H Barton, Lucy Copsey, Pierre Barbier De Reuille, and Enrico Coen. “Heterosis and the Drift Load.” Public Library of Science, 2010. <a href=\"https://doi.org/10.1371/journal.pbio.1000429.s003\">https://doi.org/10.1371/journal.pbio.1000429.s003</a>.","ieee":"U. Rosas, N. H. Barton, L. Copsey, P. Barbier De Reuille, and E. Coen, “Heterosis and the drift load.” Public Library of Science, 2010.","mla":"Rosas, Ulises, et al. <i>Heterosis and the Drift Load</i>. Public Library of Science, 2010, doi:<a href=\"https://doi.org/10.1371/journal.pbio.1000429.s003\">10.1371/journal.pbio.1000429.s003</a>.","ama":"Rosas U, Barton NH, Copsey L, Barbier De Reuille P, Coen E. Heterosis and the drift load. 2010. doi:<a href=\"https://doi.org/10.1371/journal.pbio.1000429.s003\">10.1371/journal.pbio.1000429.s003</a>"},"day":"20","date_updated":"2025-09-30T09:42:52Z","related_material":{"record":[{"status":"public","id":"3779","relation":"used_in_publication"}]},"title":"Heterosis and the drift load","author":[{"last_name":"Rosas","first_name":"Ulises","full_name":"Rosas, Ulises"},{"orcid":"0000-0002-8548-5240","first_name":"Nicholas H","last_name":"Barton","full_name":"Barton, Nicholas H","id":"4880FE40-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Lucy","last_name":"Copsey","full_name":"Copsey, Lucy"},{"full_name":"Barbier De Reuille, Pierre","last_name":"Barbier De Reuille","first_name":"Pierre"},{"full_name":"Coen, Enrico","first_name":"Enrico","last_name":"Coen"}],"date_created":"2021-08-02T09:45:39Z","user_id":"6785fbc1-c503-11eb-8a32-93094b40e1cf","department":[{"_id":"NiBa"}],"status":"public","month":"07"},{"license":"https://creativecommons.org/licenses/by-nd/4.0/","year":"2010","day":"30","corr_author":"1","language":[{"iso":"eng"}],"publist_id":"2311","scopus_import":"1","publication":"Logical Methods in Computer Science","oa_version":"Published Version","pubrep_id":"504","month":"08","status":"public","page":"1 - 23","tmp":{"image":"/image/cc_by_nd.png","name":"Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0)","legal_code_url":"https://creativecommons.org/licenses/by-nd/4.0/legalcode","short":"CC BY-ND (4.0)"},"volume":6,"date_updated":"2026-07-06T13:24:40Z","das_tickbox":"1","abstract":[{"lang":"eng","text":"Weighted automata are nondeterministic automata with numerical weights on transitions. They can define quantitative languages L that assign to each word w a real number L(w). In the case of infinite words, the value of a run is naturally computed as the maximum, limsup, liminf, limit-average, or discounted-sum of the transition weights. The value of a word w is the supremum of the values of the runs over w. We study expressiveness and closure questions about these quantitative languages. We first show that the set of words with value greater than a threshold can be omega-regular for deterministic limit-average and discounted-sum automata, while this set is always omega-regular when the threshold is isolated (i.e., some neighborhood around the threshold contains no word). In the latter case, we prove that the omega-regular language is robust against small perturbations of the transition weights. We next consider automata with transition weights 0 or 1 and show that they are as expressive as general weighted automata in the limit-average case, but not in the discounted-sum case. Third, for quantitative languages L-1 and L-2, we consider the operations max(L-1, L-2), min(L-1, L-2), and 1 - L-1, which generalize the boolean operations on languages, as well as the sum L-1 + L-2. We establish the closure properties of all classes of quantitative languages with respect to these four operations."}],"file_date_updated":"2020-07-14T12:46:19Z","_id":"3867","date_published":"2010-08-30T00:00:00Z","article_processing_charge":"No","citation":{"short":"K. Chatterjee, L. Doyen, T.A. Henzinger, Logical Methods in Computer Science 6 (2010) 1–23.","ista":"Chatterjee K, Doyen L, Henzinger TA. 2010. Expressiveness and closure properties for quantitative languages. Logical Methods in Computer Science. 6(3), 1–23.","apa":"Chatterjee, K., Doyen, L., &#38; Henzinger, T. A. (2010). Expressiveness and closure properties for quantitative languages. <i>Logical Methods in Computer Science</i>. International Federation for Computational Logic. <a href=\"https://doi.org/10.2168/LMCS-6(3:10)2010\">https://doi.org/10.2168/LMCS-6(3:10)2010</a>","chicago":"Chatterjee, Krishnendu, Laurent Doyen, and Thomas A Henzinger. “Expressiveness and Closure Properties for Quantitative Languages.” <i>Logical Methods in Computer Science</i>. International Federation for Computational Logic, 2010. <a href=\"https://doi.org/10.2168/LMCS-6(3:10)2010\">https://doi.org/10.2168/LMCS-6(3:10)2010</a>.","ieee":"K. Chatterjee, L. Doyen, and T. A. Henzinger, “Expressiveness and closure properties for quantitative languages,” <i>Logical Methods in Computer Science</i>, vol. 6, no. 3. International Federation for Computational Logic, pp. 1–23, 2010.","ama":"Chatterjee K, Doyen L, Henzinger TA. Expressiveness and closure properties for quantitative languages. <i>Logical Methods in Computer Science</i>. 2010;6(3):1-23. doi:<a href=\"https://doi.org/10.2168/LMCS-6(3:10)2010\">10.2168/LMCS-6(3:10)2010</a>","mla":"Chatterjee, Krishnendu, et al. “Expressiveness and Closure Properties for Quantitative Languages.” <i>Logical Methods in Computer Science</i>, vol. 6, no. 3, International Federation for Computational Logic, 2010, pp. 1–23, doi:<a href=\"https://doi.org/10.2168/LMCS-6(3:10)2010\">10.2168/LMCS-6(3:10)2010</a>."},"ec_funded":1,"publisher":"International Federation for Computational Logic","oa":1,"doi":"10.2168/LMCS-6(3:10)2010","quality_controlled":"1","type":"journal_article","publication_status":"published","has_accepted_license":"1","department":[{"_id":"KrCh"},{"_id":"ToHe"}],"external_id":{"isi":["000282653500010"]},"intvolume":"         6","ddc":["000","004"],"title":"Expressiveness and closure properties for quantitative languages","isi":1,"file":[{"date_created":"2018-12-12T10:17:54Z","relation":"main_file","file_id":"5312","date_updated":"2020-07-14T12:46:19Z","access_level":"open_access","file_name":"IST-2012-55-v1+1_Expressiveness_Closure_Properties_Quantitative_Languages.pdf","content_type":"application/pdf","creator":"system","file_size":216598,"checksum":"0243da726476817f2ea33b48b78be696"},{"checksum":"5e512b8503a9cb263de26331c4ee9cf2","creator":"system","file_size":302416,"content_type":"application/pdf","file_name":"IST-2016-55-v2+1_1007.4018.pdf","access_level":"open_access","date_updated":"2020-07-14T12:46:19Z","relation":"main_file","date_created":"2018-12-12T10:17:55Z","file_id":"5313"}],"related_material":{"record":[{"relation":"earlier_version","status":"public","id":"4540"}]},"date_created":"2018-12-11T12:05:36Z","project":[{"grant_number":"214373","_id":"25F1337C-B435-11E9-9278-68D0E5697425","call_identifier":"FP7","name":"Design for Embedded Systems"},{"call_identifier":"FP7","name":"COMponent-Based Embedded Systems design Techniques","_id":"25EFB36C-B435-11E9-9278-68D0E5697425","grant_number":"215543"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","issue":"3","author":[{"id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","full_name":"Chatterjee, Krishnendu","first_name":"Krishnendu","last_name":"Chatterjee","orcid":"0000-0002-4561-241X"},{"first_name":"Laurent","last_name":"Doyen","full_name":"Doyen, Laurent"},{"last_name":"Henzinger","first_name":"Thomas A","orcid":"0000−0002−2985−7724","id":"40876CD8-F248-11E8-B48F-1D18A9856A87","full_name":"Henzinger, Thomas A"}]},{"publist_id":"2312","corr_author":"1","language":[{"iso":"eng"}],"oa_version":"Published Version","publication":"Logical Methods in Computer Science","scopus_import":"1","year":"2010","day":"01","date_updated":"2026-07-06T13:25:11Z","volume":6,"tmp":{"image":"/image/cc_by_nd.png","name":"Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0)","legal_code_url":"https://creativecommons.org/licenses/by-nd/4.0/legalcode","short":"CC BY-ND (4.0)"},"das_tickbox":"1","status":"public","pubrep_id":"370","month":"09","page":"1 - 27","quality_controlled":"1","oa":1,"doi":"10.2168/LMCS-6(3:13)2010","publisher":"International Federation for Computational Logic","publication_status":"published","type":"journal_article","abstract":[{"text":"Simulation and bisimulation metrics for stochastic systems provide a quantitative generalization of the classical simulation and bisimulation relations. These metrics capture the similarity of states with respect to quantitative specifications written in the quantitative mu-calculus and related probabilistic logics. We first show that the metrics provide a bound for the difference in long-run average and discounted average behavior across states, indicating that the metrics can be used both in system verification, and in performance evaluation. For turn-based games and MDPs, we provide a polynomial-time algorithm for the computation of the one-step metric distance between states. The algorithm is based on linear programming; it improves on the previous known exponential-time algorithm based on a reduction to the theory of reals. We then present PSPACE algorithms for both the decision problem and the problem of approximating the metric distance between two states, matching the best known algorithms for Markov chains. For the bisimulation kernel of the metric our algorithm works in time O(n(4)) for both turn-based games and MDPs; improving the previously best known O(n(9).log(n)) time algorithm for MDPs. For a concurrent game G, we show that computing the exact distance be tween states is at least as hard as computing the value of concurrent reachability games and the square-root-sum problem in computational geometry. We show that checking whether the metric distance is bounded by a rational r, can be done via a reduction to the theory of real closed fields, involving a formula with three quantifier alternations, yielding O(vertical bar G vertical bar(O(vertical bar G vertical bar 5))) time complexity, improving the previously known reduction, which yielded O(vertical bar G vertical bar(O(vertical bar G vertical bar 7))) time complexity. These algorithms can be iterated to approximate the metrics using binary search","lang":"eng"}],"file_date_updated":"2020-07-14T12:46:19Z","_id":"3868","date_published":"2010-09-01T00:00:00Z","article_processing_charge":"No","citation":{"chicago":"Chatterjee, Krishnendu, Luca De Alfaro, Ritankar Majumdar, and Vishwanath Raman. “Algorithms for Game Metrics.” <i>Logical Methods in Computer Science</i>. International Federation for Computational Logic, 2010. <a href=\"https://doi.org/10.2168/LMCS-6(3:13)2010\">https://doi.org/10.2168/LMCS-6(3:13)2010</a>.","apa":"Chatterjee, K., De Alfaro, L., Majumdar, R., &#38; Raman, V. (2010). Algorithms for game metrics. <i>Logical Methods in Computer Science</i>. International Federation for Computational Logic. <a href=\"https://doi.org/10.2168/LMCS-6(3:13)2010\">https://doi.org/10.2168/LMCS-6(3:13)2010</a>","short":"K. Chatterjee, L. De Alfaro, R. Majumdar, V. Raman, Logical Methods in Computer Science 6 (2010) 1–27.","ista":"Chatterjee K, De Alfaro L, Majumdar R, Raman V. 2010. Algorithms for game metrics. Logical Methods in Computer Science. 6(3), 1–27.","ama":"Chatterjee K, De Alfaro L, Majumdar R, Raman V. Algorithms for game metrics. <i>Logical Methods in Computer Science</i>. 2010;6(3):1-27. doi:<a href=\"https://doi.org/10.2168/LMCS-6(3:13)2010\">10.2168/LMCS-6(3:13)2010</a>","mla":"Chatterjee, Krishnendu, et al. “Algorithms for Game Metrics.” <i>Logical Methods in Computer Science</i>, vol. 6, no. 3, International Federation for Computational Logic, 2010, pp. 1–27, doi:<a href=\"https://doi.org/10.2168/LMCS-6(3:13)2010\">10.2168/LMCS-6(3:13)2010</a>.","ieee":"K. Chatterjee, L. De Alfaro, R. Majumdar, and V. Raman, “Algorithms for game metrics,” <i>Logical Methods in Computer Science</i>, vol. 6, no. 3. International Federation for Computational Logic, pp. 1–27, 2010."},"isi":1,"file":[{"relation":"main_file","date_created":"2018-12-12T10:08:11Z","file_id":"4671","date_updated":"2020-07-14T12:46:19Z","access_level":"open_access","file_name":"IST-2015-370-v1+1_0809.4326.pdf","file_size":346527,"creator":"system","content_type":"application/pdf","checksum":"a18988135fef3016c93808ecb15b55f5"}],"related_material":{"record":[{"relation":"earlier_version","id":"3504","status":"public"}]},"title":"Algorithms for game metrics","issue":"3","author":[{"full_name":"Chatterjee, Krishnendu","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-4561-241X","last_name":"Chatterjee","first_name":"Krishnendu"},{"first_name":"Luca","last_name":"De Alfaro","full_name":"De Alfaro, Luca"},{"first_name":"Ritankar","last_name":"Majumdar","full_name":"Majumdar, Ritankar"},{"full_name":"Raman, Vishwanath","first_name":"Vishwanath","last_name":"Raman"}],"date_created":"2018-12-11T12:05:36Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","department":[{"_id":"KrCh"}],"has_accepted_license":"1","ddc":["000"],"external_id":{"isi":["000282653500013"]},"intvolume":"         6"},{"page":"31 - 42","month":"12","status":"public","acknowledgement":"Partially supported by the Austri an Science Fund unde r grant P20134-N13.\r\nWe thank Helena Molina-Abril for very helpful discussion. We thank anonymous reviewers for helpful comments.","volume":6533,"date_updated":"2026-07-07T13:07:08Z","day":"31","conference":{"location":"Beijing, China","start_date":"2010-09-20","name":"MCV: Medical Computer Vision","end_date":"2010-09-20"},"year":"2010","scopus_import":"1","oa_version":"None","publication":"Conference proceedings MCV 2010","language":[{"iso":"eng"}],"publist_id":"2445","intvolume":"      6533","department":[{"_id":"HeEd"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2018-12-11T12:05:08Z","alternative_title":["LNCS"],"author":[{"id":"3E92416E-F248-11E8-B48F-1D18A9856A87","full_name":"Chen, Chao","last_name":"Chen","first_name":"Chao"},{"first_name":"Daniel","last_name":"Freedman","full_name":"Freedman, Daniel"}],"title":"Topology noise removal for curve  and surface evolution","citation":{"chicago":"Chen, Chao, and Daniel Freedman. “Topology Noise Removal for Curve  and Surface Evolution.” In <i>Conference Proceedings MCV 2010</i>, 6533:31–42. Springer, 2010. <a href=\"https://doi.org/10.1007/978-3-642-18421-5_4\">https://doi.org/10.1007/978-3-642-18421-5_4</a>.","apa":"Chen, C., &#38; Freedman, D. (2010). Topology noise removal for curve  and surface evolution. In <i>Conference proceedings MCV 2010</i> (Vol. 6533, pp. 31–42). Beijing, China: Springer. <a href=\"https://doi.org/10.1007/978-3-642-18421-5_4\">https://doi.org/10.1007/978-3-642-18421-5_4</a>","short":"C. Chen, D. Freedman, in:, Conference Proceedings MCV 2010, Springer, 2010, pp. 31–42.","ista":"Chen C, Freedman D. 2010. Topology noise removal for curve  and surface evolution. Conference proceedings MCV 2010. MCV: Medical Computer Vision, LNCS, vol. 6533, 31–42.","ama":"Chen C, Freedman D. Topology noise removal for curve  and surface evolution. In: <i>Conference Proceedings MCV 2010</i>. Vol 6533. Springer; 2010:31-42. doi:<a href=\"https://doi.org/10.1007/978-3-642-18421-5_4\">10.1007/978-3-642-18421-5_4</a>","mla":"Chen, Chao, and Daniel Freedman. “Topology Noise Removal for Curve  and Surface Evolution.” <i>Conference Proceedings MCV 2010</i>, vol. 6533, Springer, 2010, pp. 31–42, doi:<a href=\"https://doi.org/10.1007/978-3-642-18421-5_4\">10.1007/978-3-642-18421-5_4</a>.","ieee":"C. Chen and D. Freedman, “Topology noise removal for curve  and surface evolution,” in <i>Conference proceedings MCV 2010</i>, Beijing, China, 2010, vol. 6533, pp. 31–42."},"date_published":"2010-12-31T00:00:00Z","article_processing_charge":"No","_id":"3782","abstract":[{"lang":"eng","text":"In cortex surface segmentation, the extracted surface is required to have a particular topology, namely, a two-sphere. We present a new method for removing topology noise of a curve or surface within the level set framework, and thus produce a cortical surface with correct topology. We define a new energy term which quantifies topology noise. We then show how to minimize this term by computing its functional derivative with respect to the level set function. This method differs from existing methods in that it is inherently continuous and not digital; and in the way that our energy directly relates to the topology of the underlying curve or surface, versus existing knot-based measures which are related in a more indirect fashion. The proposed flow is validated empirically."}],"publication_status":"published","type":"conference","doi":"10.1007/978-3-642-18421-5_4","publisher":"Springer","quality_controlled":"1"},{"quality_controlled":"1","oa":1,"doi":"10.1007/978-3-642-03409-1_2","publisher":"Springer","publication_status":"published","type":"conference","file_date_updated":"2020-07-14T12:46:31Z","abstract":[{"text":"Weighted automata are finite automata with numerical weights on transitions. Nondeterministic weighted automata define quantitative languages L that assign to each word w a real number L(w) computed as the maximal value of all runs over w, and the value of a run r is a function of the sequence of weights that appear along r. There are several natural functions to consider such as Sup, LimSup, LimInf, limit average, and discounted sum of transition weights.\r\nWe introduce alternating weighted automata in which the transitions of the runs are chosen by two players in a turn-based fashion. Each word is assigned the maximal value of a run that the first player can enforce regardless of the choices made by the second player. We survey the results about closure properties, expressiveness, and decision problems for nondeterministic weighted automata, and we extend these results to alternating weighted automata.\r\nFor quantitative languages L 1 and L 2, we consider the pointwise operations max(L 1,L 2), min(L 1,L 2), 1 − L 1, and the sum L 1 + L 2. We establish the closure properties of all classes of alternating weighted automata with respect to these four operations.\r\nWe next compare the expressive power of the various classes of alternating and nondeterministic weighted automata over infinite words. In particular, for limit average and discounted sum, we show that alternation brings more expressive power than nondeterminism.\r\nFinally, we present decidability results and open questions for the quantitative extension of the classical decision problems in automata theory: emptiness, universality, language inclusion, and language equivalence.","lang":"eng"}],"_id":"4542","ec_funded":1,"date_published":"2009-09-10T00:00:00Z","citation":{"ieee":"K. Chatterjee, L. Doyen, and T. A. Henzinger, “Alternating weighted automata,” presented at the FCT: Fundamentals of Computation Theory, Wroclaw, Poland, 2009, vol. 5699, pp. 3–13.","mla":"Chatterjee, Krishnendu, et al. <i>Alternating Weighted Automata</i>. Vol. 5699, Springer, 2009, pp. 3–13, doi:<a href=\"https://doi.org/10.1007/978-3-642-03409-1_2\">10.1007/978-3-642-03409-1_2</a>.","ama":"Chatterjee K, Doyen L, Henzinger TA. Alternating weighted automata. In: Vol 5699. Springer; 2009:3-13. doi:<a href=\"https://doi.org/10.1007/978-3-642-03409-1_2\">10.1007/978-3-642-03409-1_2</a>","ista":"Chatterjee K, Doyen L, Henzinger TA. 2009. Alternating weighted automata. FCT: Fundamentals of Computation Theory, LNCS, vol. 5699, 3–13.","short":"K. Chatterjee, L. Doyen, T.A. Henzinger, in:, Springer, 2009, pp. 3–13.","apa":"Chatterjee, K., Doyen, L., &#38; Henzinger, T. A. (2009). Alternating weighted automata (Vol. 5699, pp. 3–13). Presented at the FCT: Fundamentals of Computation Theory, Wroclaw, Poland: Springer. <a href=\"https://doi.org/10.1007/978-3-642-03409-1_2\">https://doi.org/10.1007/978-3-642-03409-1_2</a>","chicago":"Chatterjee, Krishnendu, Laurent Doyen, and Thomas A Henzinger. “Alternating Weighted Automata,” 5699:3–13. Springer, 2009. <a href=\"https://doi.org/10.1007/978-3-642-03409-1_2\">https://doi.org/10.1007/978-3-642-03409-1_2</a>."},"file":[{"date_updated":"2020-07-14T12:46:31Z","access_level":"open_access","date_created":"2018-12-12T10:15:09Z","relation":"main_file","file_id":"5126","file_size":164428,"creator":"system","content_type":"application/pdf","checksum":"e8f53abb63579de3f2bff58b2a1188e2","file_name":"IST-2012-39-v1+1_Alternating_Weighted_Automata.pdf"}],"title":"Alternating weighted automata","author":[{"first_name":"Krishnendu","last_name":"Chatterjee","orcid":"0000-0002-4561-241X","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","full_name":"Chatterjee, Krishnendu"},{"first_name":"Laurent","last_name":"Doyen","full_name":"Doyen, Laurent"},{"id":"40876CD8-F248-11E8-B48F-1D18A9856A87","full_name":"Henzinger, Thomas A","first_name":"Thomas A","last_name":"Henzinger","orcid":"0000−0002−2985−7724"}],"project":[{"grant_number":"214373","_id":"25F1337C-B435-11E9-9278-68D0E5697425","name":"Design for Embedded Systems","call_identifier":"FP7"},{"grant_number":"215543","_id":"25EFB36C-B435-11E9-9278-68D0E5697425","name":"COMponent-Based Embedded Systems design Techniques","call_identifier":"FP7"}],"alternative_title":["LNCS"],"date_created":"2018-12-11T12:09:23Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","department":[{"_id":"KrCh"}],"has_accepted_license":"1","ddc":["004"],"intvolume":"      5699","publist_id":"180","language":[{"iso":"eng"}],"corr_author":"1","oa_version":"Submitted Version","scopus_import":1,"year":"2009","conference":{"location":"Wroclaw, Poland","end_date":"2009-09-04","start_date":"2009-09-02","name":"FCT: Fundamentals of Computation Theory"},"day":"10","date_updated":"2024-10-09T20:53:55Z","volume":5699,"acknowledgement":"This research was supported in part by the Swiss National Science Foundation under the Indo-Swiss Joint Research Programme, by the European Network of Excellence on Embedded Systems Design (ArtistDesign), by the European Combest, Quasimodo, and Gasics projects, by the PAI program Moves funded by the Belgian Federal Government, and by the CFV (Federated Center in Verification) funded by the F.R.S.-FNRS.","status":"public","pubrep_id":"39","month":"09","page":"3 - 13"},{"oa_version":"None","scopus_import":1,"publist_id":"178","corr_author":"1","language":[{"iso":"eng"}],"day":"01","conference":{"location":"High Tatras, Slovakia","end_date":"2009-08-28","start_date":"2009-08-24","name":"MFCS: Mathematical Foundations of Computer Science"},"year":"2009","volume":5734,"date_updated":"2024-10-09T20:53:54Z","page":"34 - 54","status":"public","acknowledgement":"This research was supported in part by the Swiss National Science Foundation under the Indo-Swiss Joint Research Programme, by the European Network of Excellence on Embedded Systems Design (ArtistDesign), and by the European project Combest.","month":"08","publication_status":"published","type":"conference","quality_controlled":"1","publisher":"Springer","doi":"10.1007/978-3-642-03816-7_4","ec_funded":1,"citation":{"short":"K. Chatterjee, T.A. Henzinger, F. Horn, in:, Springer, 2009, pp. 34–54.","ista":"Chatterjee K, Henzinger TA, Horn F. 2009. Stochastic games with finitary objectives. MFCS: Mathematical Foundations of Computer Science, LNCS, vol. 5734, 34–54.","apa":"Chatterjee, K., Henzinger, T. A., &#38; Horn, F. (2009). Stochastic games with finitary objectives (Vol. 5734, pp. 34–54). Presented at the MFCS: Mathematical Foundations of Computer Science, High Tatras, Slovakia: Springer. <a href=\"https://doi.org/10.1007/978-3-642-03816-7_4\">https://doi.org/10.1007/978-3-642-03816-7_4</a>","chicago":"Chatterjee, Krishnendu, Thomas A Henzinger, and Florian Horn. “Stochastic Games with Finitary Objectives,” 5734:34–54. Springer, 2009. <a href=\"https://doi.org/10.1007/978-3-642-03816-7_4\">https://doi.org/10.1007/978-3-642-03816-7_4</a>.","ieee":"K. Chatterjee, T. A. Henzinger, and F. Horn, “Stochastic games with finitary objectives,” presented at the MFCS: Mathematical Foundations of Computer Science, High Tatras, Slovakia, 2009, vol. 5734, pp. 34–54.","ama":"Chatterjee K, Henzinger TA, Horn F. Stochastic games with finitary objectives. In: Vol 5734. Springer; 2009:34-54. doi:<a href=\"https://doi.org/10.1007/978-3-642-03816-7_4\">10.1007/978-3-642-03816-7_4</a>","mla":"Chatterjee, Krishnendu, et al. <i>Stochastic Games with Finitary Objectives</i>. Vol. 5734, Springer, 2009, pp. 34–54, doi:<a href=\"https://doi.org/10.1007/978-3-642-03816-7_4\">10.1007/978-3-642-03816-7_4</a>."},"date_published":"2009-08-01T00:00:00Z","_id":"4543","abstract":[{"lang":"eng","text":"The synthesis of a reactive system with respect to all omega-regular specification requires the solution of a graph game. Such games have been extended in two natural ways. First, a game graph can be equipped with probabilistic choices between alternative transitions, thus allowing the, modeling of uncertain behaviour. These are called stochastic games. Second, a liveness specification can he strengthened to require satisfaction within all unknown but bounded amount of time. These are called finitary objectives. We study. for the first time, the, combination of Stochastic games and finitary objectives. We characterize the requirements on optimal strategies and provide algorithms for Computing the maximal achievable probability of winning stochastic games with finitary parity or Street, objectives. Most notably the set of state's from which a player can win with probability . for a finitary parity objective can he computed in polynomial time even though no polynomial-time algorithm is known in the nonfinitary case."}],"author":[{"id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","full_name":"Chatterjee, Krishnendu","last_name":"Chatterjee","first_name":"Krishnendu","orcid":"0000-0002-4561-241X"},{"id":"40876CD8-F248-11E8-B48F-1D18A9856A87","full_name":"Henzinger, Thomas A","first_name":"Thomas A","last_name":"Henzinger","orcid":"0000−0002−2985−7724"},{"last_name":"Horn","first_name":"Florian","full_name":"Horn, Florian","id":"37327ACE-F248-11E8-B48F-1D18A9856A87"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","project":[{"call_identifier":"FP7","name":"COMponent-Based Embedded Systems design Techniques","grant_number":"215543","_id":"25EFB36C-B435-11E9-9278-68D0E5697425"},{"call_identifier":"FP7","name":"Design for Embedded Systems","grant_number":"214373","_id":"25F1337C-B435-11E9-9278-68D0E5697425"}],"date_created":"2018-12-11T12:09:24Z","alternative_title":["LNCS"],"title":"Stochastic games with finitary objectives","intvolume":"      5734","department":[{"_id":"KrCh"}]},{"file_date_updated":"2020-07-14T12:46:31Z","abstract":[{"lang":"eng","text":"A stochastic game is a two-player game played oil a graph, where in each state the successor is chosen either by One of the players, or according to a probability distribution. We Survey Stochastic games with limsup and liminf objectives. A real-valued re-ward is assigned to each state, and the value of all infinite path is the limsup (resp. liminf) of all rewards along the path. The value of a stochastic game is the maximal expected value of an infinite path that call he achieved by resolving the decisions of the first player. We present the complexity of computing values of Stochastic games and their subclasses, and the complexity, of optimal strategies in such games. "}],"_id":"4545","date_published":"2009-06-24T00:00:00Z","citation":{"short":"K. Chatterjee, L. Doyen, T.A. Henzinger, in:, Springer, 2009, pp. 1–15.","ista":"Chatterjee K, Doyen L, Henzinger TA. 2009. A survey of stochastic games with limsup and liminf objectives. ICALP: Automata, Languages and Programming, LNCS, vol. 5556, 1–15.","apa":"Chatterjee, K., Doyen, L., &#38; Henzinger, T. A. (2009). A survey of stochastic games with limsup and liminf objectives (Vol. 5556, pp. 1–15). Presented at the ICALP: Automata, Languages and Programming, Rhodos, Greece: Springer. <a href=\"https://doi.org/10.1007/978-3-642-02930-1_1\">https://doi.org/10.1007/978-3-642-02930-1_1</a>","chicago":"Chatterjee, Krishnendu, Laurent Doyen, and Thomas A Henzinger. “A Survey of Stochastic Games with Limsup and Liminf Objectives,” 5556:1–15. Springer, 2009. <a href=\"https://doi.org/10.1007/978-3-642-02930-1_1\">https://doi.org/10.1007/978-3-642-02930-1_1</a>.","ieee":"K. Chatterjee, L. Doyen, and T. A. Henzinger, “A survey of stochastic games with limsup and liminf objectives,” presented at the ICALP: Automata, Languages and Programming, Rhodos, Greece, 2009, vol. 5556, pp. 1–15.","ama":"Chatterjee K, Doyen L, Henzinger TA. A survey of stochastic games with limsup and liminf objectives. In: Vol 5556. Springer; 2009:1-15. doi:<a href=\"https://doi.org/10.1007/978-3-642-02930-1_1\">10.1007/978-3-642-02930-1_1</a>","mla":"Chatterjee, Krishnendu, et al. <i>A Survey of Stochastic Games with Limsup and Liminf Objectives</i>. Vol. 5556, Springer, 2009, pp. 1–15, doi:<a href=\"https://doi.org/10.1007/978-3-642-02930-1_1\">10.1007/978-3-642-02930-1_1</a>."},"ec_funded":1,"publisher":"Springer","doi":"10.1007/978-3-642-02930-1_1","oa":1,"quality_controlled":"1","type":"conference","publication_status":"published","has_accepted_license":"1","department":[{"_id":"KrCh"}],"intvolume":"      5556","ddc":["000","005"],"title":"A survey of stochastic games with limsup and liminf objectives","file":[{"file_name":"IST-2012-38-v1+1_A_survey_of_stochastic_games_with_limsup_and_liminf_objectives.pdf","checksum":"dabb6d24428a000254c95493d9c492e6","creator":"system","file_size":187419,"content_type":"application/pdf","date_created":"2018-12-12T10:13:11Z","file_id":"4992","relation":"main_file","access_level":"open_access","date_updated":"2020-07-14T12:46:31Z"}],"alternative_title":["LNCS"],"project":[{"grant_number":"215543","_id":"25EFB36C-B435-11E9-9278-68D0E5697425","name":"COMponent-Based Embedded Systems design Techniques","call_identifier":"FP7"}],"date_created":"2018-12-11T12:09:24Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","author":[{"id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","full_name":"Chatterjee, Krishnendu","first_name":"Krishnendu","last_name":"Chatterjee","orcid":"0000-0002-4561-241X"},{"last_name":"Doyen","first_name":"Laurent","full_name":"Doyen, Laurent"},{"orcid":"0000−0002−2985−7724","first_name":"Thomas A","last_name":"Henzinger","full_name":"Henzinger, Thomas A","id":"40876CD8-F248-11E8-B48F-1D18A9856A87"}],"year":"2009","conference":{"end_date":"2009-07-12","start_date":"2009-07-05","name":"ICALP: Automata, Languages and Programming","location":"Rhodos, Greece"},"day":"24","language":[{"iso":"eng"}],"corr_author":"1","publist_id":"177","scopus_import":1,"oa_version":"Submitted Version","pubrep_id":"38","month":"06","acknowledgement":"This research was supported in part by the Swiss National Science Foundation under the Indo-Swiss Joint Research Programme, by the European Network of Excellence on Embedded Systems Design (ArtistDesign), by the European projects COMBEST, Quasimodo, Gasics, by the PAI program Moves funded by the Belgian Federal Government, and by the CFV (Federated Center in Verification) funded by the F.R.S.-FNRS.","status":"public","page":"1 - 15","volume":5556,"date_updated":"2024-10-09T20:53:54Z"},{"title":"Better quality in synthesis through quantitative objectives","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2018-12-11T12:09:31Z","project":[{"name":"COMponent-Based Embedded Systems design Techniques","call_identifier":"FP7","_id":"25EFB36C-B435-11E9-9278-68D0E5697425","grant_number":"215543"}],"alternative_title":["LNCS"],"author":[{"full_name":"Bloem, Roderick","first_name":"Roderick","last_name":"Bloem"},{"id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","full_name":"Chatterjee, Krishnendu","last_name":"Chatterjee","first_name":"Krishnendu","orcid":"0000-0002-4561-241X"},{"orcid":"0000−0002−2985−7724","last_name":"Henzinger","first_name":"Thomas A","full_name":"Henzinger, Thomas A","id":"40876CD8-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Jobstmann, Barbara","last_name":"Jobstmann","first_name":"Barbara"}],"department":[{"_id":"KrCh"}],"external_id":{"arxiv":["0904.2638"]},"intvolume":"      5643","doi":"10.1007/978-3-642-02658-4_14","publisher":"Springer","oa":1,"quality_controlled":"1","type":"conference","publication_status":"published","main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/0904.2638"}],"_id":"4569","abstract":[{"lang":"eng","text":"Most specification languages express only qualitative constraints. However, among two implementations that satisfy a given specification, one may be preferred to another. For example, if a specification asks that every request is followed by a response, one may prefer an implementation that generates responses quickly but does not generate unnecessary responses. We use quantitative properties to measure the “goodness” of an implementation. Using games with corresponding quantitative objectives, we can synthesize “optimal” implementations, which are preferred among the set of possible implementations that satisfy a given specification.\r\nIn particular, we show how automata with lexicographic mean-payoff conditions can be used to express many interesting quantitative properties for reactive systems. In this framework, the synthesis of optimal implementations requires the solution of lexicographic mean-payoff games (for safety requirements), and the solution of games with both lexicographic mean-payoff and parity objectives (for liveness requirements). We present algorithms for solving both kinds of novel graph games."}],"citation":{"ieee":"R. Bloem, K. Chatterjee, T. A. Henzinger, and B. Jobstmann, “Better quality in synthesis through quantitative objectives,” presented at the CAV: Computer Aided Verification, Grenoble, France, 2009, vol. 5643, pp. 140–156.","ama":"Bloem R, Chatterjee K, Henzinger TA, Jobstmann B. Better quality in synthesis through quantitative objectives. In: Vol 5643. Springer; 2009:140-156. doi:<a href=\"https://doi.org/10.1007/978-3-642-02658-4_14\">10.1007/978-3-642-02658-4_14</a>","mla":"Bloem, Roderick, et al. <i>Better Quality in Synthesis through Quantitative Objectives</i>. Vol. 5643, Springer, 2009, pp. 140–56, doi:<a href=\"https://doi.org/10.1007/978-3-642-02658-4_14\">10.1007/978-3-642-02658-4_14</a>.","short":"R. Bloem, K. Chatterjee, T.A. Henzinger, B. Jobstmann, in:, Springer, 2009, pp. 140–156.","ista":"Bloem R, Chatterjee K, Henzinger TA, Jobstmann B. 2009. Better quality in synthesis through quantitative objectives. CAV: Computer Aided Verification, LNCS, vol. 5643, 140–156.","apa":"Bloem, R., Chatterjee, K., Henzinger, T. A., &#38; Jobstmann, B. (2009). Better quality in synthesis through quantitative objectives (Vol. 5643, pp. 140–156). Presented at the CAV: Computer Aided Verification, Grenoble, France: Springer. <a href=\"https://doi.org/10.1007/978-3-642-02658-4_14\">https://doi.org/10.1007/978-3-642-02658-4_14</a>","chicago":"Bloem, Roderick, Krishnendu Chatterjee, Thomas A Henzinger, and Barbara Jobstmann. “Better Quality in Synthesis through Quantitative Objectives,” 5643:140–56. Springer, 2009. <a href=\"https://doi.org/10.1007/978-3-642-02658-4_14\">https://doi.org/10.1007/978-3-642-02658-4_14</a>."},"date_published":"2009-06-19T00:00:00Z","ec_funded":1,"volume":5643,"date_updated":"2024-10-21T06:03:07Z","month":"06","status":"public","acknowledgement":"This research was supported by the Swiss National Science Foundation (Indo-Swiss Research Program and NCCR MICS) and the European Union projects COMBEST and COCONUT.","page":"140 - 156","arxiv":1,"language":[{"iso":"eng"}],"publist_id":"141","scopus_import":"1","oa_version":"Preprint","conference":{"name":"CAV: Computer Aided Verification","start_date":"2009-06-26","end_date":"2009-07-02","location":"Grenoble, France"},"year":"2009","day":"19"},{"corr_author":"1","language":[{"iso":"eng"}],"oa_version":"Published Version","year":"2009","day":"02","publication_identifier":{"issn":["2664-1690"]},"date_updated":"2025-04-14T13:37:25Z","status":"public","month":"11","pubrep_id":"28","page":"17","oa":1,"publisher":"IST Austria","doi":"10.15479/AT:IST-2009-0004","type":"technical_report","publication_status":"published","_id":"5392","file_date_updated":"2020-07-14T12:46:43Z","abstract":[{"text":"We consider probabilistic automata on infinite words with acceptance defined by safety, reachability, Büchi, coBüchi and limit-average conditions. We consider quantitative and qualitative decision problems. We present extensions and adaptations of proofs of [GO09] and present a precise characterization of the decidability and undecidability frontier of the quantitative and qualitative decision problems.","lang":"eng"}],"citation":{"chicago":"Chatterjee, Krishnendu. <i>Probabilistic Automata on Infinite Words: Decidability and Undecidability Results</i>. IST Austria, 2009. <a href=\"https://doi.org/10.15479/AT:IST-2009-0004\">https://doi.org/10.15479/AT:IST-2009-0004</a>.","apa":"Chatterjee, K. (2009). <i>Probabilistic automata on infinite words: Decidability and undecidability results</i>. IST Austria. <a href=\"https://doi.org/10.15479/AT:IST-2009-0004\">https://doi.org/10.15479/AT:IST-2009-0004</a>","ista":"Chatterjee K. 2009. Probabilistic automata on infinite words: Decidability and undecidability results, IST Austria, 17p.","short":"K. Chatterjee, Probabilistic Automata on Infinite Words: Decidability and Undecidability Results, IST Austria, 2009.","mla":"Chatterjee, Krishnendu. <i>Probabilistic Automata on Infinite Words: Decidability and Undecidability Results</i>. IST Austria, 2009, doi:<a href=\"https://doi.org/10.15479/AT:IST-2009-0004\">10.15479/AT:IST-2009-0004</a>.","ama":"Chatterjee K. <i>Probabilistic Automata on Infinite Words: Decidability and Undecidability Results</i>. IST Austria; 2009. doi:<a href=\"https://doi.org/10.15479/AT:IST-2009-0004\">10.15479/AT:IST-2009-0004</a>","ieee":"K. Chatterjee, <i>Probabilistic automata on infinite words: Decidability and undecidability results</i>. IST Austria, 2009."},"date_published":"2009-11-02T00:00:00Z","file":[{"access_level":"open_access","date_updated":"2020-07-14T12:46:43Z","file_id":"5530","relation":"main_file","date_created":"2018-12-12T11:54:08Z","checksum":"fb7563150231325b00b1718d956f687b","file_size":311065,"content_type":"application/pdf","creator":"system","file_name":"IST-2009-0004_IST-2009-0004.pdf"}],"related_material":{"record":[{"id":"3857","status":"public","relation":"later_version"}]},"title":"Probabilistic automata on infinite words: Decidability and undecidability results","author":[{"id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","full_name":"Chatterjee, Krishnendu","last_name":"Chatterjee","first_name":"Krishnendu","orcid":"0000-0002-4561-241X"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","alternative_title":["IST Austria Technical Report"],"date_created":"2018-12-12T11:39:04Z","department":[{"_id":"KrCh"}],"has_accepted_license":"1","ddc":["005"]},{"page":"12","month":"10","pubrep_id":"29","status":"public","date_updated":"2025-04-14T13:37:27Z","day":"09","publication_identifier":{"issn":["2664-1690"]},"year":"2009","oa_version":"Published Version","corr_author":"1","language":[{"iso":"eng"}],"ddc":["000","005"],"has_accepted_license":"1","department":[{"_id":"KrCh"},{"_id":"ToHe"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2018-12-12T11:39:05Z","alternative_title":["IST Austria Technical Report"],"author":[{"full_name":"Chatterjee, Krishnendu","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-4561-241X","last_name":"Chatterjee","first_name":"Krishnendu"},{"last_name":"Henzinger","first_name":"Thomas A","orcid":"0000−0002−2985−7724","id":"40876CD8-F248-11E8-B48F-1D18A9856A87","full_name":"Henzinger, Thomas A"},{"last_name":"Jobstmann","first_name":"Barbara","full_name":"Jobstmann, Barbara"},{"last_name":"Radhakrishna","first_name":"Arjun","id":"3B51CAC4-F248-11E8-B48F-1D18A9856A87","full_name":"Radhakrishna, Arjun"}],"title":"Gist: A solver for probabilistic games","file":[{"relation":"main_file","file_id":"5459","date_created":"2018-12-12T11:52:58Z","date_updated":"2020-07-14T12:46:43Z","access_level":"open_access","file_name":"IST-2009-0003_IST-2009-0003.pdf","content_type":"application/pdf","creator":"system","file_size":386866,"checksum":"49551ac552915b17593a14c993845274"}],"related_material":{"record":[{"relation":"later_version","id":"4388","status":"public"}]},"citation":{"apa":"Chatterjee, K., Henzinger, T. A., Jobstmann, B., &#38; Radhakrishna, A. (2009). <i>Gist: A solver for probabilistic games</i>. IST Austria. <a href=\"https://doi.org/10.15479/AT:IST-2009-0003\">https://doi.org/10.15479/AT:IST-2009-0003</a>","chicago":"Chatterjee, Krishnendu, Thomas A Henzinger, Barbara Jobstmann, and Arjun Radhakrishna. <i>Gist: A Solver for Probabilistic Games</i>. IST Austria, 2009. <a href=\"https://doi.org/10.15479/AT:IST-2009-0003\">https://doi.org/10.15479/AT:IST-2009-0003</a>.","ista":"Chatterjee K, Henzinger TA, Jobstmann B, Radhakrishna A. 2009. Gist: A solver for probabilistic games, IST Austria, 12p.","short":"K. Chatterjee, T.A. Henzinger, B. Jobstmann, A. Radhakrishna, Gist: A Solver for Probabilistic Games, IST Austria, 2009.","mla":"Chatterjee, Krishnendu, et al. <i>Gist: A Solver for Probabilistic Games</i>. IST Austria, 2009, doi:<a href=\"https://doi.org/10.15479/AT:IST-2009-0003\">10.15479/AT:IST-2009-0003</a>.","ama":"Chatterjee K, Henzinger TA, Jobstmann B, Radhakrishna A. <i>Gist: A Solver for Probabilistic Games</i>. IST Austria; 2009. doi:<a href=\"https://doi.org/10.15479/AT:IST-2009-0003\">10.15479/AT:IST-2009-0003</a>","ieee":"K. Chatterjee, T. A. Henzinger, B. Jobstmann, and A. Radhakrishna, <i>Gist: A solver for probabilistic games</i>. IST Austria, 2009."},"date_published":"2009-10-09T00:00:00Z","_id":"5393","file_date_updated":"2020-07-14T12:46:43Z","abstract":[{"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.","lang":"eng"}],"publication_status":"published","type":"technical_report","doi":"10.15479/AT:IST-2009-0003","oa":1,"publisher":"IST Austria"},{"file_date_updated":"2020-07-14T12:46:43Z","abstract":[{"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.","lang":"eng"}],"_id":"5394","year":"2009","date_published":"2009-09-09T00:00:00Z","publication_identifier":{"issn":["2664-1690"]},"citation":{"chicago":"Chatterjee, Krishnendu, Thomas A Henzinger, and Florian Horn. <i>Improved Lower Bounds for Request-Response and Finitary Streett Games</i>. IST Austria, 2009. <a href=\"https://doi.org/10.15479/AT:IST-2009-0002\">https://doi.org/10.15479/AT:IST-2009-0002</a>.","apa":"Chatterjee, K., Henzinger, T. A., &#38; Horn, F. (2009). <i>Improved lower bounds for request-response and finitary Streett games</i>. IST Austria. <a href=\"https://doi.org/10.15479/AT:IST-2009-0002\">https://doi.org/10.15479/AT:IST-2009-0002</a>","short":"K. Chatterjee, T.A. Henzinger, 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.","ama":"Chatterjee K, Henzinger TA, Horn F. <i>Improved Lower Bounds for Request-Response and Finitary Streett Games</i>. IST Austria; 2009. doi:<a href=\"https://doi.org/10.15479/AT:IST-2009-0002\">10.15479/AT:IST-2009-0002</a>","mla":"Chatterjee, Krishnendu, et al. <i>Improved Lower Bounds for Request-Response and Finitary Streett Games</i>. IST Austria, 2009, doi:<a href=\"https://doi.org/10.15479/AT:IST-2009-0002\">10.15479/AT:IST-2009-0002</a>.","ieee":"K. Chatterjee, T. A. Henzinger, and F. Horn, <i>Improved lower bounds for request-response and finitary Streett games</i>. IST Austria, 2009."},"day":"09","publisher":"IST Austria","oa":1,"corr_author":"1","doi":"10.15479/AT:IST-2009-0002","language":[{"iso":"eng"}],"oa_version":"Published Version","type":"technical_report","publication_status":"published","department":[{"_id":"KrCh"},{"_id":"ToHe"}],"status":"public","pubrep_id":"30","has_accepted_license":"1","month":"09","ddc":["004"],"page":"11","date_updated":"2024-10-09T21:08:23Z","file":[{"checksum":"1c50a9723fbae1b2c46d18138968efb3","file_size":238091,"content_type":"application/pdf","creator":"system","file_name":"IST-2009-0002_IST-2009-0002.pdf","access_level":"open_access","date_updated":"2020-07-14T12:46:43Z","relation":"main_file","date_created":"2018-12-12T11:53:50Z","file_id":"5511"}],"title":"Improved lower bounds for request-response and finitary Streett games","author":[{"id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","full_name":"Chatterjee, Krishnendu","last_name":"Chatterjee","first_name":"Krishnendu","orcid":"0000-0002-4561-241X"},{"last_name":"Henzinger","first_name":"Thomas A","orcid":"0000−0002−2985−7724","id":"40876CD8-F248-11E8-B48F-1D18A9856A87","full_name":"Henzinger, Thomas A"},{"last_name":"Horn","first_name":"Florian","id":"37327ACE-F248-11E8-B48F-1D18A9856A87","full_name":"Horn, Florian"}],"alternative_title":["IST Austria Technical Report"],"date_created":"2018-12-12T11:39:05Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"},{"oa_version":"Published Version","language":[{"iso":"eng"}],"corr_author":"1","day":"09","publication_identifier":{"issn":["2664-1690"]},"year":"2009","date_updated":"2025-04-14T13:37:25Z","page":"20","month":"09","pubrep_id":"31","status":"public","publication_status":"published","type":"technical_report","publisher":"IST Austria","doi":"10.15479/AT:IST-2009-0001","oa":1,"citation":{"ista":"Chatterjee K, Doyen L, Henzinger TA. 2009. Qualitative analysis of partially-observable Markov decision processes, IST Austria, 20p.","short":"K. Chatterjee, L. Doyen, T.A. Henzinger, Qualitative Analysis of Partially-Observable Markov Decision Processes, IST Austria, 2009.","chicago":"Chatterjee, Krishnendu, Laurent Doyen, and Thomas A Henzinger. <i>Qualitative Analysis of Partially-Observable Markov Decision Processes</i>. IST Austria, 2009. <a href=\"https://doi.org/10.15479/AT:IST-2009-0001\">https://doi.org/10.15479/AT:IST-2009-0001</a>.","apa":"Chatterjee, K., Doyen, L., &#38; Henzinger, T. A. (2009). <i>Qualitative analysis of partially-observable Markov decision processes</i>. IST Austria. <a href=\"https://doi.org/10.15479/AT:IST-2009-0001\">https://doi.org/10.15479/AT:IST-2009-0001</a>","ieee":"K. Chatterjee, L. Doyen, and T. A. Henzinger, <i>Qualitative analysis of partially-observable Markov decision processes</i>. IST Austria, 2009.","mla":"Chatterjee, Krishnendu, et al. <i>Qualitative Analysis of Partially-Observable Markov Decision Processes</i>. IST Austria, 2009, doi:<a href=\"https://doi.org/10.15479/AT:IST-2009-0001\">10.15479/AT:IST-2009-0001</a>.","ama":"Chatterjee K, Doyen L, Henzinger TA. <i>Qualitative Analysis of Partially-Observable Markov Decision Processes</i>. IST Austria; 2009. doi:<a href=\"https://doi.org/10.15479/AT:IST-2009-0001\">10.15479/AT:IST-2009-0001</a>"},"date_published":"2009-09-09T00:00:00Z","_id":"5395","file_date_updated":"2020-07-14T12:46:43Z","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."}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2018-12-12T11:39:05Z","alternative_title":["IST Austria Technical Report"],"author":[{"id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","full_name":"Chatterjee, Krishnendu","last_name":"Chatterjee","first_name":"Krishnendu","orcid":"0000-0002-4561-241X"},{"full_name":"Doyen, Laurent","first_name":"Laurent","last_name":"Doyen"},{"full_name":"Henzinger, Thomas A","id":"40876CD8-F248-11E8-B48F-1D18A9856A87","orcid":"0000−0002−2985−7724","last_name":"Henzinger","first_name":"Thomas A"}],"title":"Qualitative analysis of partially-observable Markov decision processes","related_material":{"record":[{"status":"public","id":"3855","relation":"later_version"}]},"file":[{"date_updated":"2020-07-14T12:46:43Z","access_level":"open_access","date_created":"2018-12-12T11:53:25Z","relation":"main_file","file_id":"5486","content_type":"application/pdf","file_size":342088,"creator":"system","checksum":"04d9cc065cc19598a4e8631c47f1a562","file_name":"IST-2009-0001_IST-2009-0001.pdf"}],"ddc":["005"],"has_accepted_license":"1","department":[{"_id":"KrCh"},{"_id":"ToHe"}]},{"month":"11","acknowledgement":"Royal Society and the Engineering and Physical Sciences for support (GR/ T11753/01)","status":"public","page":"187 - 195","date_updated":"2025-09-30T09:56:29Z","volume":74,"year":"2009","day":"10","language":[{"iso":"eng"}],"corr_author":"1","publist_id":"2708","scopus_import":"1","oa_version":"None","publication":"Cold Spring Harbor Symposia on Quantitative Biology","department":[{"_id":"NiBa"}],"external_id":{"isi":["000578380600022"]},"intvolume":"        74","title":"Why sex and recombination?","isi":1,"date_created":"2018-12-11T12:04:33Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","author":[{"orcid":"0000-0002-8548-5240","last_name":"Barton","first_name":"Nicholas H","full_name":"Barton, Nicholas H","id":"4880FE40-F248-11E8-B48F-1D18A9856A87"}],"abstract":[{"text":"Sex and recombination have long been seen as adaptations that facilitate natural selection by generating favorable variations. If recombination is to aid selection, there must be negative linkage disequilibria—favorable alleles must be found together less often than expected by chance. These negative linkage disequilibria can be generated directly by selection, but this must involve negative epistasis of just the right strength, which is not expected, from either experiment or theory. Random drift provides a more general source of negative associations: Favorable mutations almost always arise on different genomes, and negative associations tend to persist, precisely because they shield variation from selection.\r\n\r\nWe can understand how recombination aids adaptation by determining the maximum possible rate of adaptation. With unlinked loci, this rate increases only logarithmically with the influx of favorable mutations. With a linear genome, a scaling argument shows that in a large population, the rate of adaptive substitution depends only on the expected rate in the absence of interference, divided by the total rate of recombination. A two-locus approximation predicts an upper bound on the rate of substitution, proportional to recombination rate.\r\n\r\nIf associations between linked loci do impede adaptation, there can be substantial selection for modifiers that increase recombination. Whether this can account for the maintenance of high rates of sex and recombination depends on the extent of selection. It is clear that the rate of species-wide substitutions is typically far too low to generate appreciable selection for recombination. However, local sweeps within a subdivided population may be effective.","lang":"eng"}],"_id":"3675","article_processing_charge":"No","date_published":"2009-11-10T00:00:00Z","citation":{"ieee":"N. H. Barton, “Why sex and recombination?,” in <i>Cold Spring Harbor Symposia on Quantitative Biology</i>, vol. 74, Cold Spring Harbor Laboratory Press, 2009, pp. 187–195.","ama":"Barton NH. Why sex and recombination? In: <i>Cold Spring Harbor Symposia on Quantitative Biology</i>. Vol 74. Cold Spring Harbor Laboratory Press; 2009:187-195. doi:<a href=\"https://doi.org/10.1101/sqb.2009.74.030\">10.1101/sqb.2009.74.030</a>","mla":"Barton, Nicholas H. “Why Sex and Recombination?” <i>Cold Spring Harbor Symposia on Quantitative Biology</i>, vol. 74, Cold Spring Harbor Laboratory Press, 2009, pp. 187–95, doi:<a href=\"https://doi.org/10.1101/sqb.2009.74.030\">10.1101/sqb.2009.74.030</a>.","short":"N.H. Barton, in:, Cold Spring Harbor Symposia on Quantitative Biology, Cold Spring Harbor Laboratory Press, 2009, pp. 187–195.","ista":"Barton NH. 2009.Why sex and recombination? In: Cold Spring Harbor Symposia on Quantitative Biology. vol. 74, 187–195.","chicago":"Barton, Nicholas H. “Why Sex and Recombination?” In <i>Cold Spring Harbor Symposia on Quantitative Biology</i>, 74:187–95. Cold Spring Harbor Laboratory Press, 2009. <a href=\"https://doi.org/10.1101/sqb.2009.74.030\">https://doi.org/10.1101/sqb.2009.74.030</a>.","apa":"Barton, N. H. (2009). Why sex and recombination? In <i>Cold Spring Harbor Symposia on Quantitative Biology</i> (Vol. 74, pp. 187–195). Cold Spring Harbor Laboratory Press. <a href=\"https://doi.org/10.1101/sqb.2009.74.030\">https://doi.org/10.1101/sqb.2009.74.030</a>"},"publisher":"Cold Spring Harbor Laboratory Press","doi":"10.1101/sqb.2009.74.030","quality_controlled":"1","type":"book_chapter","publication_status":"published"},{"page":"317 - 324","month":"07","acknowledgement":"This work was supported by a Royal Society/Wolfson Award, and by grants EP/T11753/01, EP/C546318/01 from the EPSRC.\r\nWe are grateful to M. Cates, H.P. de Vladar and G. Sella, and to two anonymous referees, for their helpful comments.","status":"public","volume":259,"date_updated":"2025-09-30T09:56:01Z","day":"21","year":"2009","scopus_import":"1","publication":"Journal of Theoretical Biology","oa_version":"Submitted Version","corr_author":"1","language":[{"iso":"eng"}],"publist_id":"2452","intvolume":"       259","external_id":{"isi":["000267176100013"]},"department":[{"_id":"NiBa"}],"date_created":"2018-12-11T12:05:06Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","issue":"2","author":[{"first_name":"Nicholas H","last_name":"Barton","orcid":"0000-0002-8548-5240","id":"4880FE40-F248-11E8-B48F-1D18A9856A87","full_name":"Barton, Nicholas H"},{"full_name":"Coe, Jason","last_name":"Coe","first_name":"Jason"}],"title":"On the application of statistical physics to evolutionary biology","isi":1,"article_processing_charge":"No","date_published":"2009-07-21T00:00:00Z","citation":{"apa":"Barton, N. H., &#38; Coe, J. (2009). On the application of statistical physics to evolutionary biology. <i>Journal of Theoretical Biology</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.jtbi.2009.03.019\">https://doi.org/10.1016/j.jtbi.2009.03.019</a>","chicago":"Barton, Nicholas H, and Jason Coe. “On the Application of Statistical Physics to Evolutionary Biology.” <i>Journal of Theoretical Biology</i>. Elsevier, 2009. <a href=\"https://doi.org/10.1016/j.jtbi.2009.03.019\">https://doi.org/10.1016/j.jtbi.2009.03.019</a>.","ista":"Barton NH, Coe J. 2009. On the application of statistical physics to evolutionary biology. Journal of Theoretical Biology. 259(2), 317–324.","short":"N.H. Barton, J. Coe, Journal of Theoretical Biology 259 (2009) 317–324.","mla":"Barton, Nicholas H., and Jason Coe. “On the Application of Statistical Physics to Evolutionary Biology.” <i>Journal of Theoretical Biology</i>, vol. 259, no. 2, Elsevier, 2009, pp. 317–24, doi:<a href=\"https://doi.org/10.1016/j.jtbi.2009.03.019\">10.1016/j.jtbi.2009.03.019</a>.","ama":"Barton NH, Coe J. On the application of statistical physics to evolutionary biology. <i>Journal of Theoretical Biology</i>. 2009;259(2):317-324. doi:<a href=\"https://doi.org/10.1016/j.jtbi.2009.03.019\">10.1016/j.jtbi.2009.03.019</a>","ieee":"N. H. Barton and J. Coe, “On the application of statistical physics to evolutionary biology,” <i>Journal of Theoretical Biology</i>, vol. 259, no. 2. Elsevier, pp. 317–324, 2009."},"abstract":[{"lang":"eng","text":"There is a close analogy between statistical thermodynamics and the evolution of allele frequencies under mutation, selection and random drift. Wright's formula for the stationary distribution of allele frequencies is analogous to the Boltzmann distribution in statistical physics. Population size, 2N, plays the role of the inverse temperature, 1/kT, and determines the magnitude of random fluctuations. Log mean fitness, View the MathML source, tends to increase under selection, and is analogous to a (negative) energy; a potential function, U, increases under mutation in a similar way. An entropy, SH, can be defined which measures the deviation from the distribution of allele frequencies expected under random drift alone; the sum View the MathML source gives a free fitness that increases as the population evolves towards its stationary distribution. Usually, we observe the distribution of a few quantitative traits that depend on the frequencies of very many alleles. The mean and variance of such traits are analogous to observable quantities in statistical thermodynamics. Thus, we can define an entropy, SΩ, which measures the volume of allele frequency space that is consistent with the observed trait distribution. The stationary distribution of the traits is View the MathML source; this applies with arbitrary epistasis and dominance. The entropies SΩ, SH are distinct, but converge when there are so many alleles that traits fluctuate close to their expectations. Populations tend to evolve towards states that can be realised in many ways (i.e., large SΩ), which may lead to a substantial drop below the adaptive peak; we illustrate this point with a simple model of genetic redundancy. This analogy with statistical thermodynamics brings together previous ideas in a general framework, and justifies a maximum entropy approximation to the dynamics of quantitative traits."}],"_id":"3775","type":"journal_article","publication_status":"published","main_file_link":[{"url":"https://hal.archives-ouvertes.fr/hal-00554594/document","open_access":"1"}],"oa":1,"doi":"10.1016/j.jtbi.2009.03.019","publisher":"Elsevier","quality_controlled":"1"},{"year":"2009","day":"01","publist_id":"2447","language":[{"iso":"eng"}],"publication":"Journal of Evolutionary Biology","oa_version":"Submitted Version","scopus_import":"1","acknowledgement":"We owe a great debt to Jim Murray for his many contributions to the study of Partula, in the field, in the laboratory, in the interpretation of data, and in generating new ideas about evolution. With pleasure and respect we dedicate this paper to him. Jim Murray played a leading role in making the collections used here. We are very grateful also to Ann Clarke and Elizabeth Murray for help with collecting, to Lorna Stewart for snail dissections, to Joris Koene for the gift of snails, to Natasha Constant for entering the data, and Takahiro Asami, Edmund Gittenberger and Gerhard Falkner for establishing the sinistral stock of L. stagnalis. Comments from an anonymous referee, A. Richard Palmer and the editorial board improved the manuscript. Work in the field was supported by the Royal Society, The Carnegie Trust, the Percy Sladen Trust and the National Science Foundation. The Science Research Council (B/SR/4144), the National Science Foundation (GB-4188), the Royal Society and the University of Nottingham supported work in the laboratory.","status":"public","pubrep_id":"553","month":"08","page":"1624 - 1635","date_updated":"2025-09-30T09:55:32Z","volume":22,"abstract":[{"text":"Why are sinistral snails so rare? Two main hypotheses are that selection acts against the establishment of new coiling morphs, because dextral and sinistral snails have trouble mating, or else a developmental constraint prevents the establishment of sinistrals. We therefore used an isolate of the snail Lymnaea stagnalis, in which sinistrals are rare, and populations of Partula suturalis, in which sinistrals are common, as well as a mathematical model, to understand the circumstances by which new morphs evolve. The main finding is that the sinistral genotype is associated with reduced egg viability in L. stagnalis, but in P. suturalis individuals of sinistral and dextral genotype appear equally fecund, implying a lack of a constraint. As positive frequency-dependent selection against the rare chiral morph in P. suturalis also operates over a narrow range (&lt; 3%), the results suggest a model for chiral evolution in snails in which weak positive frequency-dependent selection may be overcome by a negative frequency-dependent selection, such as reproductive character displacement. In snails, there is not always a developmental constraint. As the direction of cleavage, and thus the directional asymmetry of the entire body, does not generally vary in other Spiralia (annelids, echiurans, vestimentiferans, sipunculids and nemerteans), it remains an open question as to whether this is because of a constraint and/or because most taxa do not have a conspicuous external asymmetry (like a shell) upon which selection can act.","lang":"eng"}],"file_date_updated":"2020-07-14T12:46:15Z","_id":"3780","date_published":"2009-08-01T00:00:00Z","article_processing_charge":"No","citation":{"chicago":"Davison, Angus, Nicholas H Barton, and Bryan Clarke. “The Effect of Chirality Phenotype and Genotype on the Fecundity and Viability of Partula Suturalis and Lymnaea Stagnalis: Implications for the Evolution of Sinistral Snails.” <i>Journal of Evolutionary Biology</i>. Wiley, 2009. <a href=\"https://doi.org/10.1111/j.1420-9101.2009.01770.x\">https://doi.org/10.1111/j.1420-9101.2009.01770.x</a>.","apa":"Davison, A., Barton, N. H., &#38; Clarke, B. (2009). The effect of chirality phenotype and genotype on the fecundity and viability of Partula suturalis and Lymnaea stagnalis: Implications for the evolution of sinistral snails. <i>Journal of Evolutionary Biology</i>. Wiley. <a href=\"https://doi.org/10.1111/j.1420-9101.2009.01770.x\">https://doi.org/10.1111/j.1420-9101.2009.01770.x</a>","ista":"Davison A, Barton NH, Clarke B. 2009. The effect of chirality phenotype and genotype on the fecundity and viability of Partula suturalis and Lymnaea stagnalis: Implications for the evolution of sinistral snails. Journal of Evolutionary Biology. 22(8), 1624–1635.","short":"A. Davison, N.H. Barton, B. Clarke, Journal of Evolutionary Biology 22 (2009) 1624–1635.","mla":"Davison, Angus, et al. “The Effect of Chirality Phenotype and Genotype on the Fecundity and Viability of Partula Suturalis and Lymnaea Stagnalis: Implications for the Evolution of Sinistral Snails.” <i>Journal of Evolutionary Biology</i>, vol. 22, no. 8, Wiley, 2009, pp. 1624–35, doi:<a href=\"https://doi.org/10.1111/j.1420-9101.2009.01770.x\">10.1111/j.1420-9101.2009.01770.x</a>.","ama":"Davison A, Barton NH, Clarke B. The effect of chirality phenotype and genotype on the fecundity and viability of Partula suturalis and Lymnaea stagnalis: Implications for the evolution of sinistral snails. <i>Journal of Evolutionary Biology</i>. 2009;22(8):1624-1635. doi:<a href=\"https://doi.org/10.1111/j.1420-9101.2009.01770.x\">10.1111/j.1420-9101.2009.01770.x</a>","ieee":"A. Davison, N. H. Barton, and B. Clarke, “The effect of chirality phenotype and genotype on the fecundity and viability of Partula suturalis and Lymnaea stagnalis: Implications for the evolution of sinistral snails,” <i>Journal of Evolutionary Biology</i>, vol. 22, no. 8. Wiley, pp. 1624–1635, 2009."},"quality_controlled":"1","publisher":"Wiley","oa":1,"doi":"10.1111/j.1420-9101.2009.01770.x","type":"journal_article","publication_status":"published","department":[{"_id":"NiBa"}],"has_accepted_license":"1","ddc":["570"],"intvolume":"        22","external_id":{"isi":["000268029800006"]},"isi":1,"file":[{"file_name":"Davison_JEB_v31_2009.pdf","file_size":2583812,"creator":"dernst","content_type":"application/pdf","checksum":"f70c15c6ab9306121d4153a3be0d2346","file_id":"6044","date_created":"2019-02-22T09:21:44Z","relation":"main_file","date_updated":"2020-07-14T12:46:15Z","access_level":"open_access"}],"title":"The effect of chirality phenotype and genotype on the fecundity and viability of Partula suturalis and Lymnaea stagnalis: Implications for the evolution of sinistral snails","issue":"8","author":[{"full_name":"Davison, Angus","last_name":"Davison","first_name":"Angus"},{"last_name":"Barton","first_name":"Nicholas H","orcid":"0000-0002-8548-5240","id":"4880FE40-F248-11E8-B48F-1D18A9856A87","full_name":"Barton, Nicholas H"},{"last_name":"Clarke","first_name":"Bryan","full_name":"Clarke, Bryan"}],"date_created":"2018-12-11T12:05:08Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345"}]