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Documents authored by Zhang, Lijun

Document
Complete Volume
DOI: 10.4230/LIPIcs.CONCUR.2018
LIPIcs, Volume 118, CONCUR'18, Complete Volume

Authors: Sven Schewe and Lijun Zhang

Published in: LIPIcs, Volume 118, 29th International Conference on Concurrency Theory (CONCUR 2018)

Abstract
LIPIcs, Volume 118, CONCUR'18, Complete Volume
Cite as

29th International Conference on Concurrency Theory (CONCUR 2018). Leibniz International Proceedings in Informatics (LIPIcs), Volume 118, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@Proceedings{schewe_et_al:LIPIcs.CONCUR.2018,
  title =	{{LIPIcs, Volume 118, CONCUR'18, Complete Volume}},
  booktitle =	{29th International Conference on Concurrency Theory (CONCUR 2018)},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-087-3},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{118},
  editor =	{Schewe, Sven and Zhang, Lijun},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2018},
  URN =		{urn:nbn:de:0030-drops-97431},
  doi =		{10.4230/LIPIcs.CONCUR.2018},
  annote =	{Keywords: Theory of Computation}
}
Document
Front Matter
DOI: 10.4230/LIPIcs.CONCUR.2018.0
Front Matter, Table of Contents, Preface, Conference Organization

Authors: Sven Schewe and Lijun Zhang

Published in: LIPIcs, Volume 118, 29th International Conference on Concurrency Theory (CONCUR 2018)

Abstract
Front Matter, Table of Contents, Preface, Conference Organization
Cite as

29th International Conference on Concurrency Theory (CONCUR 2018). Leibniz International Proceedings in Informatics (LIPIcs), Volume 118, pp. 0:i-0:xxi, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018)

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@InProceedings{schewe_et_al:LIPIcs.CONCUR.2018.0,
  author =	{Schewe, Sven and Zhang, Lijun},
  title =	{{Front Matter, Table of Contents, Preface, Conference Organization}},
  booktitle =	{29th International Conference on Concurrency Theory (CONCUR 2018)},
  pages =	{0:i--0:xxi},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-087-3},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{118},
  editor =	{Schewe, Sven and Zhang, Lijun},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2018.0},
  URN =		{urn:nbn:de:0030-drops-95386},
  doi =		{10.4230/LIPIcs.CONCUR.2018.0},
  annote =	{Keywords: Front Matter, Table of Contents, Preface, Conference Organization}
}
Document
DOI: 10.4230/LIPIcs.CONCUR.2015.354
Lazy Probabilistic Model Checking without Determinisation

Authors: Ernst Moritz Hahn, Guangyuan Li, Sven Schewe, Andrea Turrini, and Lijun Zhang

Published in: LIPIcs, Volume 42, 26th International Conference on Concurrency Theory (CONCUR 2015)

Abstract
The bottleneck in the quantitative analysis of Markov chains and Markov decision processes against specifications given in LTL or as some form of nondeterministic Büchi automata is the inclusion of a determinisation step of the automaton under consideration. In this paper, we show that full determinisation can be avoided: subset and breakpoint constructions suffice. We have implemented our approach - both explicit and symbolic versions - in a prototype tool. Our experiments show that our prototype can compete with mature tools like PRISM.
Cite as

Ernst Moritz Hahn, Guangyuan Li, Sven Schewe, Andrea Turrini, and Lijun Zhang. Lazy Probabilistic Model Checking without Determinisation. In 26th International Conference on Concurrency Theory (CONCUR 2015). Leibniz International Proceedings in Informatics (LIPIcs), Volume 42, pp. 354-367, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2015)

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@InProceedings{hahn_et_al:LIPIcs.CONCUR.2015.354,
  author =	{Hahn, Ernst Moritz and Li, Guangyuan and Schewe, Sven and Turrini, Andrea and Zhang, Lijun},
  title =	{{Lazy Probabilistic Model Checking without Determinisation}},
  booktitle =	{26th International Conference on Concurrency Theory (CONCUR 2015)},
  pages =	{354--367},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-91-0},
  ISSN =	{1868-8969},
  year =	{2015},
  volume =	{42},
  editor =	{Aceto, Luca and de Frutos Escrig, David},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2015.354},
  URN =		{urn:nbn:de:0030-drops-53918},
  doi =		{10.4230/LIPIcs.CONCUR.2015.354},
  annote =	{Keywords: Markov decision processes, model checking, PLTL, determinisation}
}
Document
DOI: 10.4230/LIPIcs.FSTTCS.2011.399
Efficient Approximation of Optimal Control for Continuous-Time Markov Games

Authors: John Fearnley, Markus Rabe, Sven Schewe, and Lijun Zhang

Published in: LIPIcs, Volume 13, IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2011)

Abstract
We study the time-bounded reachability problem for continuous time Markov decision processes (CTMDPs) and games (CTMGs). Existing techniques for this problem use discretization techniques to break time into discrete intervals, and optimal control is approximated for each interval separately. Current techniques provide an accuracy of O(\epsilon^2) on each interval, which leads to an infeasibly large number of intervals. We propose a sequence of approximations that achieve accuracies of O(\epsilon^3), O(\epsilon^4), and O(\epsilon^5), that allow us to drastically reduce the number of intervals that are considered. For CTMDPs, the resulting algorithms are comparable to the heuristic approach given by Buckholz and Schulz, while also being theoretically justified. All of our results generalise to CTMGs, where our results yield the first practically implementable algorithms for this problem. We also provide positional strategies for both players that achieve similar error bounds.
Cite as

John Fearnley, Markus Rabe, Sven Schewe, and Lijun Zhang. Efficient Approximation of Optimal Control for Continuous-Time Markov Games. In IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2011). Leibniz International Proceedings in Informatics (LIPIcs), Volume 13, pp. 399-410, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2011)

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@InProceedings{fearnley_et_al:LIPIcs.FSTTCS.2011.399,
  author =	{Fearnley, John and Rabe, Markus and Schewe, Sven and Zhang, Lijun},
  title =	{{Efficient Approximation of Optimal Control for Continuous-Time Markov Games}},
  booktitle =	{IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2011)},
  pages =	{399--410},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-939897-34-7},
  ISSN =	{1868-8969},
  year =	{2011},
  volume =	{13},
  editor =	{Chakraborty, Supratik and Kumar, Amit},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/LIPIcs.FSTTCS.2011.399},
  URN =		{urn:nbn:de:0030-drops-33547},
  doi =		{10.4230/LIPIcs.FSTTCS.2011.399},
  annote =	{Keywords: Continuous time Markov decision processes and games, discretisation}
}
Document
DOI: 10.4230/DagSemProc.07101.3
07101 Working Group Report – Performance Measures Other Than Time

Authors: Lucia Cloth, Pepijn Crouzen, Matthias Fruth, Tingting Han, David N. Jansen, Mark Kattenbelt, Gerard J. M. Smit, and Lijun Zhang

Published in: Dagstuhl Seminar Proceedings, Volume 7101, Quantitative Aspects of Embedded Systems (2007)

Abstract
This presentation shows a few possible performance measures that might be interesting and possible evaluation methods.
Cite as

Lucia Cloth, Pepijn Crouzen, Matthias Fruth, Tingting Han, David N. Jansen, Mark Kattenbelt, Gerard J. M. Smit, and Lijun Zhang. 07101 Working Group Report – Performance Measures Other Than Time. In Quantitative Aspects of Embedded Systems. Dagstuhl Seminar Proceedings, Volume 7101, pp. 1-2, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2007)

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@InProceedings{cloth_et_al:DagSemProc.07101.3,
  author =	{Cloth, Lucia and Crouzen, Pepijn and Fruth, Matthias and Han, Tingting and Jansen, David N. and Kattenbelt, Mark and Smit, Gerard J. M. and Zhang, Lijun},
  title =	{{07101 Working Group Report – Performance Measures Other Than Time}},
  booktitle =	{Quantitative Aspects of Embedded Systems},
  pages =	{1--2},
  series =	{Dagstuhl Seminar Proceedings (DagSemProc)},
  ISSN =	{1862-4405},
  year =	{2007},
  volume =	{7101},
  editor =	{Boudewijn Haverkort and Joost-Pieter Katoen and Lothar Thiele},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops-dev.dagstuhl.de/entities/document/10.4230/DagSemProc.07101.3},
  URN =		{urn:nbn:de:0030-drops-11396},
  doi =		{10.4230/DagSemProc.07101.3},
  annote =	{Keywords: }
}
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