---
_id: '13967'
abstract:
- lang: eng
  text: 'A classic solution technique for Markov decision processes (MDP) and stochastic
    games (SG) is value iteration (VI). Due to its good practical performance, this
    approximative approach is typically preferred over exact techniques, even though
    no practical bounds on the imprecision of the result could be given until recently.
    As a consequence, even the most used model checkers could return arbitrarily wrong
    results. Over the past decade, different works derived stopping criteria, indicating
    when the precision reaches the desired level, for various settings, in particular
    MDP with reachability, total reward, and mean payoff, and SG with reachability.In
    this paper, we provide the first stopping criteria for VI on SG with total reward
    and mean payoff, yielding the first anytime algorithms in these settings. To this
    end, we provide the solution in two flavours: First through a reduction to the
    MDP case and second directly on SG. The former is simpler and automatically utilizes
    any advances on MDP. The latter allows for more local computations, heading towards
    better practical efficiency.Our solution unifies the previously mentioned approaches
    for MDP and SG and their underlying ideas. To achieve this, we isolate objective-specific
    subroutines as well as identify objective-independent concepts. These structural
    concepts, while surprisingly simple, form the very essence of the unified solution.'
acknowledgement: This research was funded in part by DFG projects 383882557 “SUV”
  and 427755713 “GOPro”.
article_processing_charge: No
arxiv: 1
author:
- first_name: Jan
  full_name: Kretinsky, Jan
  id: 44CEF464-F248-11E8-B48F-1D18A9856A87
  last_name: Kretinsky
  orcid: 0000-0002-8122-2881
- first_name: Tobias
  full_name: Meggendorfer, Tobias
  id: b21b0c15-30a2-11eb-80dc-f13ca25802e1
  last_name: Meggendorfer
  orcid: 0000-0002-1712-2165
- first_name: Maximilian
  full_name: Weininger, Maximilian
  id: 02ab0197-cc70-11ed-ab61-918e71f56881
  last_name: Weininger
citation:
  ama: 'Kretinsky J, Meggendorfer T, Weininger M. Stopping criteria for value iteration
    on stochastic games with quantitative objectives. In: <i>38th Annual ACM/IEEE
    Symposium on Logic in Computer Science</i>. Vol 2023. Institute of Electrical
    and Electronics Engineers; 2023. doi:<a href="https://doi.org/10.1109/LICS56636.2023.10175771">10.1109/LICS56636.2023.10175771</a>'
  apa: 'Kretinsky, J., Meggendorfer, T., &#38; Weininger, M. (2023). Stopping criteria
    for value iteration on stochastic games with quantitative objectives. In <i>38th
    Annual ACM/IEEE Symposium on Logic in Computer Science</i> (Vol. 2023). Boston,
    MA, United States: Institute of Electrical and Electronics Engineers. <a href="https://doi.org/10.1109/LICS56636.2023.10175771">https://doi.org/10.1109/LICS56636.2023.10175771</a>'
  chicago: Kretinsky, Jan, Tobias Meggendorfer, and Maximilian Weininger. “Stopping
    Criteria for Value Iteration on Stochastic Games with Quantitative Objectives.”
    In <i>38th Annual ACM/IEEE Symposium on Logic in Computer Science</i>, Vol. 2023.
    Institute of Electrical and Electronics Engineers, 2023. <a href="https://doi.org/10.1109/LICS56636.2023.10175771">https://doi.org/10.1109/LICS56636.2023.10175771</a>.
  ieee: J. Kretinsky, T. Meggendorfer, and M. Weininger, “Stopping criteria for value
    iteration on stochastic games with quantitative objectives,” in <i>38th Annual
    ACM/IEEE Symposium on Logic in Computer Science</i>, Boston, MA, United States,
    2023, vol. 2023.
  ista: 'Kretinsky J, Meggendorfer T, Weininger M. 2023. Stopping criteria for value
    iteration on stochastic games with quantitative objectives. 38th Annual ACM/IEEE
    Symposium on Logic in Computer Science. LICS: Symposium on Logic in Computer Science
    vol. 2023.'
  mla: Kretinsky, Jan, et al. “Stopping Criteria for Value Iteration on Stochastic
    Games with Quantitative Objectives.” <i>38th Annual ACM/IEEE Symposium on Logic
    in Computer Science</i>, vol. 2023, Institute of Electrical and Electronics Engineers,
    2023, doi:<a href="https://doi.org/10.1109/LICS56636.2023.10175771">10.1109/LICS56636.2023.10175771</a>.
  short: J. Kretinsky, T. Meggendorfer, M. Weininger, in:, 38th Annual ACM/IEEE Symposium
    on Logic in Computer Science, Institute of Electrical and Electronics Engineers,
    2023.
conference:
  end_date: 2023-06-29
  location: Boston, MA, United States
  name: 'LICS: Symposium on Logic in Computer Science'
  start_date: 2023-06-26
date_created: 2023-08-06T22:01:10Z
date_published: 2023-07-01T00:00:00Z
date_updated: 2023-12-13T12:06:10Z
day: '01'
department:
- _id: KrCh
doi: 10.1109/LICS56636.2023.10175771
external_id:
  arxiv:
  - '2304.09930'
  isi:
  - '001036707700042'
intvolume: '      2023'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2304.09930
month: '07'
oa: 1
oa_version: Preprint
publication: 38th Annual ACM/IEEE Symposium on Logic in Computer Science
publication_identifier:
  isbn:
  - '9798350335873'
  issn:
  - 1043-6871
publication_status: published
publisher: Institute of Electrical and Electronics Engineers
quality_controlled: '1'
scopus_import: '1'
status: public
title: Stopping criteria for value iteration on stochastic games with quantitative
  objectives
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 2023
year: '2023'
...
---
_id: '14242'
abstract:
- lang: eng
  text: We study the problem of training and certifying adversarially robust quantized
    neural networks (QNNs). Quantization is a technique for making neural networks
    more efficient by running them using low-bit integer arithmetic and is therefore
    commonly adopted in industry. Recent work has shown that floating-point neural
    networks that have been verified to be robust can become vulnerable to adversarial
    attacks after quantization, and certification of the quantized representation
    is necessary to guarantee robustness. In this work, we present quantization-aware
    interval bound propagation (QA-IBP), a novel method for training robust QNNs.
    Inspired by advances in robust learning of non-quantized networks, our training
    algorithm computes the gradient of an abstract representation of the actual network.
    Unlike existing approaches, our method can handle the discrete semantics of QNNs.
    Based on QA-IBP, we also develop a complete verification procedure for verifying
    the adversarial robustness of QNNs, which is guaranteed to terminate and produce
    a correct answer. Compared to existing approaches, the key advantage of our verification
    procedure is that it runs entirely on GPU or other accelerator devices. We demonstrate
    experimentally that our approach significantly outperforms existing methods and
    establish the new state-of-the-art for training and certifying the robustness
    of QNNs.
acknowledgement: "This work was supported in part by the ERC-2020-AdG 101020093, ERC
  CoG 863818 (FoRM-SMArt) and the European Union’s Horizon 2020 research and innovation
  programme under the Marie Skłodowska-Curie Grant Agreement No. 665385. Research
  was sponsored by the United\r\nStates Air Force Research Laboratory and the United
  States Air Force Artificial Intelligence Accelerator and was accomplished under
  Cooperative Agreement Number FA8750-19-2-\r\n1000. The views and conclusions contained
  in this document are those of the authors and should not be interpreted as representing
  the official policies, either expressed or implied,\r\nof the United States Air
  Force or the U.S. Government. The U.S. Government is authorized to reproduce and
  distribute reprints for Government purposes notwithstanding any copyright\r\nnotation
  herein. The research was also funded in part by the AI2050 program at Schmidt Futures
  (Grant G-22-63172) and Capgemini SE."
article_processing_charge: No
arxiv: 1
author:
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
- first_name: Dorde
  full_name: Zikelic, Dorde
  id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
  last_name: Zikelic
  orcid: 0000-0002-4681-1699
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
- first_name: Daniela
  full_name: Rus, Daniela
  last_name: Rus
citation:
  ama: 'Lechner M, Zikelic D, Chatterjee K, Henzinger TA, Rus D. Quantization-aware
    interval bound propagation for training certifiably robust quantized neural networks.
    In: <i>Proceedings of the 37th AAAI Conference on Artificial Intelligence</i>.
    Vol 37. Association for the Advancement of Artificial Intelligence; 2023:14964-14973.
    doi:<a href="https://doi.org/10.1609/aaai.v37i12.26747">10.1609/aaai.v37i12.26747</a>'
  apa: 'Lechner, M., Zikelic, D., Chatterjee, K., Henzinger, T. A., &#38; Rus, D.
    (2023). Quantization-aware interval bound propagation for training certifiably
    robust quantized neural networks. In <i>Proceedings of the 37th AAAI Conference
    on Artificial Intelligence</i> (Vol. 37, pp. 14964–14973). Washington, DC, United
    States: Association for the Advancement of Artificial Intelligence. <a href="https://doi.org/10.1609/aaai.v37i12.26747">https://doi.org/10.1609/aaai.v37i12.26747</a>'
  chicago: Lechner, Mathias, Dorde Zikelic, Krishnendu Chatterjee, Thomas A Henzinger,
    and Daniela Rus. “Quantization-Aware Interval Bound Propagation for Training Certifiably
    Robust Quantized Neural Networks.” In <i>Proceedings of the 37th AAAI Conference
    on Artificial Intelligence</i>, 37:14964–73. Association for the Advancement of
    Artificial Intelligence, 2023. <a href="https://doi.org/10.1609/aaai.v37i12.26747">https://doi.org/10.1609/aaai.v37i12.26747</a>.
  ieee: M. Lechner, D. Zikelic, K. Chatterjee, T. A. Henzinger, and D. Rus, “Quantization-aware
    interval bound propagation for training certifiably robust quantized neural networks,”
    in <i>Proceedings of the 37th AAAI Conference on Artificial Intelligence</i>,
    Washington, DC, United States, 2023, vol. 37, no. 12, pp. 14964–14973.
  ista: 'Lechner M, Zikelic D, Chatterjee K, Henzinger TA, Rus D. 2023. Quantization-aware
    interval bound propagation for training certifiably robust quantized neural networks.
    Proceedings of the 37th AAAI Conference on Artificial Intelligence. AAAI: Conference
    on Artificial Intelligence vol. 37, 14964–14973.'
  mla: Lechner, Mathias, et al. “Quantization-Aware Interval Bound Propagation for
    Training Certifiably Robust Quantized Neural Networks.” <i>Proceedings of the
    37th AAAI Conference on Artificial Intelligence</i>, vol. 37, no. 12, Association
    for the Advancement of Artificial Intelligence, 2023, pp. 14964–73, doi:<a href="https://doi.org/10.1609/aaai.v37i12.26747">10.1609/aaai.v37i12.26747</a>.
  short: M. Lechner, D. Zikelic, K. Chatterjee, T.A. Henzinger, D. Rus, in:, Proceedings
    of the 37th AAAI Conference on Artificial Intelligence, Association for the Advancement
    of Artificial Intelligence, 2023, pp. 14964–14973.
conference:
  end_date: 2023-02-14
  location: Washington, DC, United States
  name: 'AAAI: Conference on Artificial Intelligence'
  start_date: 2023-02-07
date_created: 2023-08-27T22:01:17Z
date_published: 2023-06-26T00:00:00Z
date_updated: 2025-07-14T09:09:56Z
day: '26'
department:
- _id: ToHe
- _id: KrCh
doi: 10.1609/aaai.v37i12.26747
ec_funded: 1
external_id:
  arxiv:
  - '2211.16187'
intvolume: '        37'
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2211.16187
month: '06'
oa: 1
oa_version: Preprint
page: 14964-14973
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: Proceedings of the 37th AAAI Conference on Artificial Intelligence
publication_identifier:
  isbn:
  - '9781577358800'
publication_status: published
publisher: Association for the Advancement of Artificial Intelligence
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantization-aware interval bound propagation for training certifiably robust
  quantized neural networks
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 37
year: '2023'
...
---
_id: '14243'
abstract:
- lang: eng
  text: 'Two-player zero-sum "graph games" are central in logic, verification, and
    multi-agent systems. The game proceeds by placing a token on a vertex of a graph,
    and allowing the players to move it to produce an infinite path, which determines
    the winner or payoff of the game. Traditionally, the players alternate turns in
    moving the token. In "bidding games", however, the players have budgets and in
    each turn, an auction (bidding) determines which player moves the token. So far,
    bidding games have only been studied as full-information games. In this work we
    initiate the study of partial-information bidding games: we study bidding games
    in which a player''s initial budget is drawn from a known probability distribution.
    We show that while for some bidding mechanisms and objectives, it is straightforward
    to adapt the results from the full-information setting to the partial-information
    setting, for others, the analysis is significantly more challenging, requires
    new techniques, and gives rise to interesting results. Specifically, we study
    games with "mean-payoff" objectives in combination with "poorman" bidding. We
    construct optimal strategies for a partially-informed player who plays against
    a fully-informed adversary. We show that, somewhat surprisingly, the "value" under
    pure strategies does not necessarily exist in such games.'
acknowledgement: This research was supported in part by ISF grant no.1679/21, by the
  ERC CoG 863818 (ForM-SMArt), and the European Union’s Horizon 2020 research and
  innovation programme under the Marie Skłodowska-Curie Grant Agreement No. 665385.
article_processing_charge: No
arxiv: 1
author:
- first_name: Guy
  full_name: Avni, Guy
  id: 463C8BC2-F248-11E8-B48F-1D18A9856A87
  last_name: Avni
  orcid: 0000-0001-5588-8287
- first_name: Ismael R
  full_name: Jecker, Ismael R
  id: 85D7C63E-7D5D-11E9-9C0F-98C4E5697425
  last_name: Jecker
- first_name: Dorde
  full_name: Zikelic, Dorde
  id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
  last_name: Zikelic
  orcid: 0000-0002-4681-1699
citation:
  ama: 'Avni G, Jecker IR, Zikelic D. Bidding graph games with partially-observable
    budgets. In: <i>Proceedings of the 37th AAAI Conference on Artificial Intelligence</i>.
    Vol 37. ; 2023:5464-5471. doi:<a href="https://doi.org/10.1609/aaai.v37i5.25679">10.1609/aaai.v37i5.25679</a>'
  apa: Avni, G., Jecker, I. R., &#38; Zikelic, D. (2023). Bidding graph games with
    partially-observable budgets. In <i>Proceedings of the 37th AAAI Conference on
    Artificial Intelligence</i> (Vol. 37, pp. 5464–5471). Washington, DC, United States.
    <a href="https://doi.org/10.1609/aaai.v37i5.25679">https://doi.org/10.1609/aaai.v37i5.25679</a>
  chicago: Avni, Guy, Ismael R Jecker, and Dorde Zikelic. “Bidding Graph Games with
    Partially-Observable Budgets.” In <i>Proceedings of the 37th AAAI Conference on
    Artificial Intelligence</i>, 37:5464–71, 2023. <a href="https://doi.org/10.1609/aaai.v37i5.25679">https://doi.org/10.1609/aaai.v37i5.25679</a>.
  ieee: G. Avni, I. R. Jecker, and D. Zikelic, “Bidding graph games with partially-observable
    budgets,” in <i>Proceedings of the 37th AAAI Conference on Artificial Intelligence</i>,
    Washington, DC, United States, 2023, vol. 37, no. 5, pp. 5464–5471.
  ista: 'Avni G, Jecker IR, Zikelic D. 2023. Bidding graph games with partially-observable
    budgets. Proceedings of the 37th AAAI Conference on Artificial Intelligence. AAAI:
    Conference on Artificial Intelligence vol. 37, 5464–5471.'
  mla: Avni, Guy, et al. “Bidding Graph Games with Partially-Observable Budgets.”
    <i>Proceedings of the 37th AAAI Conference on Artificial Intelligence</i>, vol.
    37, no. 5, 2023, pp. 5464–71, doi:<a href="https://doi.org/10.1609/aaai.v37i5.25679">10.1609/aaai.v37i5.25679</a>.
  short: G. Avni, I.R. Jecker, D. Zikelic, in:, Proceedings of the 37th AAAI Conference
    on Artificial Intelligence, 2023, pp. 5464–5471.
conference:
  end_date: 2023-02-14
  location: Washington, DC, United States
  name: 'AAAI: Conference on Artificial Intelligence'
  start_date: 2023-02-07
date_created: 2023-08-27T22:01:18Z
date_published: 2023-06-27T00:00:00Z
date_updated: 2025-07-14T09:09:56Z
day: '27'
department:
- _id: ToHe
- _id: KrCh
doi: 10.1609/aaai.v37i5.25679
ec_funded: 1
external_id:
  arxiv:
  - '2211.13626'
intvolume: '        37'
issue: '5'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1609/aaai.v37i5.25679
month: '06'
oa: 1
oa_version: Published Version
page: 5464-5471
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: Proceedings of the 37th AAAI Conference on Artificial Intelligence
publication_identifier:
  isbn:
  - '9781577358800'
publication_status: published
quality_controlled: '1'
scopus_import: '1'
status: public
title: Bidding graph games with partially-observable budgets
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 37
year: '2023'
...
---
_id: '14259'
abstract:
- lang: eng
  text: "We provide a learning-based technique for guessing a winning strategy in
    a parity game originating from an LTL synthesis problem. A cheaply obtained guess
    can be useful in several applications. Not only can the guessed strategy be applied
    as best-effort in cases where the game’s huge size prohibits rigorous approaches,
    but it can also increase the scalability of rigorous LTL synthesis in several
    ways. Firstly, checking whether a guessed strategy is winning is easier than constructing
    one. Secondly, even if the guess is wrong in some places, it can be fixed by strategy
    iteration faster than constructing one from scratch. Thirdly, the guess can be
    used in on-the-fly approaches to prioritize exploration in the most fruitful directions.\r\nIn
    contrast to previous works, we (i) reflect the highly structured logical information
    in game’s states, the so-called semantic labelling, coming from the recent LTL-to-automata
    translations, and (ii) learn to reflect it properly by learning from previously
    solved games, bringing the solving process closer to human-like reasoning."
acknowledgement: This research was funded in part by the German Research Foundation
  (DFG) project 427755713 Group-By Objectives in Probabilistic Verification (GOPro).
alternative_title:
- LNCS
article_processing_charge: Yes (in subscription journal)
author:
- first_name: Jan
  full_name: Kretinsky, Jan
  id: 44CEF464-F248-11E8-B48F-1D18A9856A87
  last_name: Kretinsky
  orcid: 0000-0002-8122-2881
- first_name: Tobias
  full_name: Meggendorfer, Tobias
  id: b21b0c15-30a2-11eb-80dc-f13ca25802e1
  last_name: Meggendorfer
  orcid: 0000-0002-1712-2165
- first_name: Maximilian
  full_name: Prokop, Maximilian
  last_name: Prokop
- first_name: Sabine
  full_name: Rieder, Sabine
  last_name: Rieder
citation:
  ama: 'Kretinsky J, Meggendorfer T, Prokop M, Rieder S. Guessing winning policies
    in LTL synthesis by semantic learning. In: <i>35th International Conference on
    Computer Aided Verification </i>. Vol 13964. Springer Nature; 2023:390-414. doi:<a
    href="https://doi.org/10.1007/978-3-031-37706-8_20">10.1007/978-3-031-37706-8_20</a>'
  apa: 'Kretinsky, J., Meggendorfer, T., Prokop, M., &#38; Rieder, S. (2023). Guessing
    winning policies in LTL synthesis by semantic learning. In <i>35th International
    Conference on Computer Aided Verification </i> (Vol. 13964, pp. 390–414). Paris,
    France: Springer Nature. <a href="https://doi.org/10.1007/978-3-031-37706-8_20">https://doi.org/10.1007/978-3-031-37706-8_20</a>'
  chicago: Kretinsky, Jan, Tobias Meggendorfer, Maximilian Prokop, and Sabine Rieder.
    “Guessing Winning Policies in LTL Synthesis by Semantic Learning.” In <i>35th
    International Conference on Computer Aided Verification </i>, 13964:390–414. Springer
    Nature, 2023. <a href="https://doi.org/10.1007/978-3-031-37706-8_20">https://doi.org/10.1007/978-3-031-37706-8_20</a>.
  ieee: J. Kretinsky, T. Meggendorfer, M. Prokop, and S. Rieder, “Guessing winning
    policies in LTL synthesis by semantic learning,” in <i>35th International Conference
    on Computer Aided Verification </i>, Paris, France, 2023, vol. 13964, pp. 390–414.
  ista: 'Kretinsky J, Meggendorfer T, Prokop M, Rieder S. 2023. Guessing winning policies
    in LTL synthesis by semantic learning. 35th International Conference on Computer
    Aided Verification . CAV: Computer Aided Verification, LNCS, vol. 13964, 390–414.'
  mla: Kretinsky, Jan, et al. “Guessing Winning Policies in LTL Synthesis by Semantic
    Learning.” <i>35th International Conference on Computer Aided Verification </i>,
    vol. 13964, Springer Nature, 2023, pp. 390–414, doi:<a href="https://doi.org/10.1007/978-3-031-37706-8_20">10.1007/978-3-031-37706-8_20</a>.
  short: J. Kretinsky, T. Meggendorfer, M. Prokop, S. Rieder, in:, 35th International
    Conference on Computer Aided Verification , Springer Nature, 2023, pp. 390–414.
conference:
  end_date: 2023-07-22
  location: Paris, France
  name: 'CAV: Computer Aided Verification'
  start_date: 2023-07-17
date_created: 2023-09-03T22:01:16Z
date_published: 2023-07-17T00:00:00Z
date_updated: 2023-09-06T08:27:33Z
day: '17'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1007/978-3-031-37706-8_20
file:
- access_level: open_access
  checksum: ed66278b61bb869e1baba3d9b9081271
  content_type: application/pdf
  creator: dernst
  date_created: 2023-09-06T08:25:50Z
  date_updated: 2023-09-06T08:25:50Z
  file_id: '14276'
  file_name: 2023_LNCS_CAV_Kretinsky.pdf
  file_size: 428354
  relation: main_file
  success: 1
file_date_updated: 2023-09-06T08:25:50Z
has_accepted_license: '1'
intvolume: '     13964'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 390-414
publication: '35th International Conference on Computer Aided Verification '
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783031377051'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Guessing winning policies in LTL synthesis by semantic learning
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 13964
year: '2023'
...
---
_id: '12676'
abstract:
- lang: eng
  text: Turn-based stochastic games (aka simple stochastic games) are two-player zero-sum
    games played on directed graphs with probabilistic transitions. The goal of player-max
    is to maximize the probability to reach a target state against the adversarial
    player-min. These games lie in NP ∩ coNP and are among the rare combinatorial
    problems that belong to this complexity class for which the existence of polynomial-time
    algorithm is a major open question. While randomized sub-exponential time algorithm
    exists, all known deterministic algorithms require exponential time in the worst-case.
    An important open question has been whether faster algorithms can be obtained
    parametrized by the treewidth of the game graph. Even deterministic sub-exponential
    time algorithm for constant treewidth turn-based stochastic games has remain elusive.
    In this work our main result is a deterministic algorithm to solve turn-based
    stochastic games that, given a game with n states, treewidth at most t, and the
    bit-complexity of the probabilistic transition function log D, has running time
    O ((tn2 log D)t log n). In particular, our algorithm is quasi-polynomial time
    for games with constant or poly-logarithmic treewidth.
acknowledgement: This research was partially supported by the ERC CoG 863818 (ForM-SMArt)
  grant.
article_processing_charge: No
author:
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Tobias
  full_name: Meggendorfer, Tobias
  id: b21b0c15-30a2-11eb-80dc-f13ca25802e1
  last_name: Meggendorfer
  orcid: 0000-0002-1712-2165
- first_name: Raimundo J
  full_name: Saona Urmeneta, Raimundo J
  id: BD1DF4C4-D767-11E9-B658-BC13E6697425
  last_name: Saona Urmeneta
  orcid: 0000-0001-5103-038X
- first_name: Jakub
  full_name: Svoboda, Jakub
  id: 130759D2-D7DD-11E9-87D2-DE0DE6697425
  last_name: Svoboda
  orcid: 0000-0002-1419-3267
citation:
  ama: 'Chatterjee K, Meggendorfer T, Saona Urmeneta RJ, Svoboda J. Faster algorithm
    for turn-based stochastic games with bounded treewidth. In: <i>Proceedings of
    the 2023 Annual ACM-SIAM Symposium on Discrete Algorithms</i>. Society for Industrial
    and Applied Mathematics; 2023:4590-4605. doi:<a href="https://doi.org/10.1137/1.9781611977554.ch173">10.1137/1.9781611977554.ch173</a>'
  apa: 'Chatterjee, K., Meggendorfer, T., Saona Urmeneta, R. J., &#38; Svoboda, J.
    (2023). Faster algorithm for turn-based stochastic games with bounded treewidth.
    In <i>Proceedings of the 2023 Annual ACM-SIAM Symposium on Discrete Algorithms</i>
    (pp. 4590–4605). Florence, Italy: Society for Industrial and Applied Mathematics.
    <a href="https://doi.org/10.1137/1.9781611977554.ch173">https://doi.org/10.1137/1.9781611977554.ch173</a>'
  chicago: Chatterjee, Krishnendu, Tobias Meggendorfer, Raimundo J Saona Urmeneta,
    and Jakub Svoboda. “Faster Algorithm for Turn-Based Stochastic Games with Bounded
    Treewidth.” In <i>Proceedings of the 2023 Annual ACM-SIAM Symposium on Discrete
    Algorithms</i>, 4590–4605. Society for Industrial and Applied Mathematics, 2023.
    <a href="https://doi.org/10.1137/1.9781611977554.ch173">https://doi.org/10.1137/1.9781611977554.ch173</a>.
  ieee: K. Chatterjee, T. Meggendorfer, R. J. Saona Urmeneta, and J. Svoboda, “Faster
    algorithm for turn-based stochastic games with bounded treewidth,” in <i>Proceedings
    of the 2023 Annual ACM-SIAM Symposium on Discrete Algorithms</i>, Florence, Italy,
    2023, pp. 4590–4605.
  ista: 'Chatterjee K, Meggendorfer T, Saona Urmeneta RJ, Svoboda J. 2023. Faster
    algorithm for turn-based stochastic games with bounded treewidth. Proceedings
    of the 2023 Annual ACM-SIAM Symposium on Discrete Algorithms. SODA: Symposium
    on Discrete Algorithms, 4590–4605.'
  mla: Chatterjee, Krishnendu, et al. “Faster Algorithm for Turn-Based Stochastic
    Games with Bounded Treewidth.” <i>Proceedings of the 2023 Annual ACM-SIAM Symposium
    on Discrete Algorithms</i>, Society for Industrial and Applied Mathematics, 2023,
    pp. 4590–605, doi:<a href="https://doi.org/10.1137/1.9781611977554.ch173">10.1137/1.9781611977554.ch173</a>.
  short: K. Chatterjee, T. Meggendorfer, R.J. Saona Urmeneta, J. Svoboda, in:, Proceedings
    of the 2023 Annual ACM-SIAM Symposium on Discrete Algorithms, Society for Industrial
    and Applied Mathematics, 2023, pp. 4590–4605.
conference:
  end_date: 2023-01-25
  location: Florence, Italy
  name: 'SODA: Symposium on Discrete Algorithms'
  start_date: 2023-01-22
date_created: 2023-02-24T12:20:47Z
date_published: 2023-02-01T00:00:00Z
date_updated: 2025-07-14T09:09:50Z
day: '01'
department:
- _id: GradSch
- _id: KrCh
doi: 10.1137/1.9781611977554.ch173
ec_funded: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1137/1.9781611977554.ch173
month: '02'
oa: 1
oa_version: Published Version
page: 4590-4605
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication: Proceedings of the 2023 Annual ACM-SIAM Symposium on Discrete Algorithms
publication_identifier:
  isbn:
  - '9781611977554'
publication_status: published
publisher: Society for Industrial and Applied Mathematics
quality_controlled: '1'
status: public
title: Faster algorithm for turn-based stochastic games with bounded treewidth
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '12706'
abstract:
- lang: eng
  text: Allometric settings of population dynamics models are appealing due to their
    parsimonious nature and broad utility when studying system level effects. Here,
    we parameterise the size-scaled Rosenzweig-MacArthur differential equations to
    eliminate prey-mass dependency, facilitating an in depth analytic study of the
    equations which incorporates scaling parameters’ contributions to coexistence.
    We define the functional response term to match empirical findings, and examine
    situations where metabolic theory derivations and observation diverge. The dynamical
    properties of the Rosenzweig-MacArthur system, encompassing the distribution of
    size-abundance equilibria, the scaling of period and amplitude of population cycling,
    and relationships between predator and prey abundances, are consistent with empirical
    observation. Our parameterisation is an accurate minimal model across 15+ orders
    of mass magnitude.
acknowledgement: "This research was supported by an Australian Government Research
  Training Program\r\n(RTP) Scholarship to JCM (https://www.dese.gov.au), and LB is
  supported by the Centre de\r\nrecherche sur le vieillissement Fellowship Program.
  The funders had no role in study design, data collection and analysis, decision
  to publish, or preparation of the manuscript."
article_processing_charge: No
article_type: original
author:
- first_name: Jody C.
  full_name: Mckerral, Jody C.
  last_name: Mckerral
- first_name: Maria
  full_name: Kleshnina, Maria
  id: 4E21749C-F248-11E8-B48F-1D18A9856A87
  last_name: Kleshnina
- first_name: Vladimir
  full_name: Ejov, Vladimir
  last_name: Ejov
- first_name: Louise
  full_name: Bartle, Louise
  last_name: Bartle
- first_name: James G.
  full_name: Mitchell, James G.
  last_name: Mitchell
- first_name: Jerzy A.
  full_name: Filar, Jerzy A.
  last_name: Filar
citation:
  ama: Mckerral JC, Kleshnina M, Ejov V, Bartle L, Mitchell JG, Filar JA. Empirical
    parameterisation and dynamical analysis of the allometric Rosenzweig-MacArthur
    equations. <i>PLoS One</i>. 2023;18(2):e0279838. doi:<a href="https://doi.org/10.1371/journal.pone.0279838">10.1371/journal.pone.0279838</a>
  apa: Mckerral, J. C., Kleshnina, M., Ejov, V., Bartle, L., Mitchell, J. G., &#38;
    Filar, J. A. (2023). Empirical parameterisation and dynamical analysis of the
    allometric Rosenzweig-MacArthur equations. <i>PLoS One</i>. Public Library of
    Science. <a href="https://doi.org/10.1371/journal.pone.0279838">https://doi.org/10.1371/journal.pone.0279838</a>
  chicago: Mckerral, Jody C., Maria Kleshnina, Vladimir Ejov, Louise Bartle, James
    G. Mitchell, and Jerzy A. Filar. “Empirical Parameterisation and Dynamical Analysis
    of the Allometric Rosenzweig-MacArthur Equations.” <i>PLoS One</i>. Public Library
    of Science, 2023. <a href="https://doi.org/10.1371/journal.pone.0279838">https://doi.org/10.1371/journal.pone.0279838</a>.
  ieee: J. C. Mckerral, M. Kleshnina, V. Ejov, L. Bartle, J. G. Mitchell, and J. A.
    Filar, “Empirical parameterisation and dynamical analysis of the allometric Rosenzweig-MacArthur
    equations,” <i>PLoS One</i>, vol. 18, no. 2. Public Library of Science, p. e0279838,
    2023.
  ista: Mckerral JC, Kleshnina M, Ejov V, Bartle L, Mitchell JG, Filar JA. 2023. Empirical
    parameterisation and dynamical analysis of the allometric Rosenzweig-MacArthur
    equations. PLoS One. 18(2), e0279838.
  mla: Mckerral, Jody C., et al. “Empirical Parameterisation and Dynamical Analysis
    of the Allometric Rosenzweig-MacArthur Equations.” <i>PLoS One</i>, vol. 18, no.
    2, Public Library of Science, 2023, p. e0279838, doi:<a href="https://doi.org/10.1371/journal.pone.0279838">10.1371/journal.pone.0279838</a>.
  short: J.C. Mckerral, M. Kleshnina, V. Ejov, L. Bartle, J.G. Mitchell, J.A. Filar,
    PLoS One 18 (2023) e0279838.
date_created: 2023-03-05T23:01:05Z
date_published: 2023-02-27T00:00:00Z
date_updated: 2023-10-17T12:53:30Z
day: '27'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1371/journal.pone.0279838
external_id:
  isi:
  - '000996122900022'
  pmid:
  - '36848357'
file:
- access_level: open_access
  checksum: 798ed5739a4117b03173e5d56e0534c9
  content_type: application/pdf
  creator: cchlebak
  date_created: 2023-03-07T10:26:45Z
  date_updated: 2023-03-07T10:26:45Z
  file_id: '12712'
  file_name: 2023_PLOSOne_Mckerral.pdf
  file_size: 1257003
  relation: main_file
  success: 1
file_date_updated: 2023-03-07T10:26:45Z
has_accepted_license: '1'
intvolume: '        18'
isi: 1
issue: '2'
language:
- iso: eng
month: '02'
oa: 1
oa_version: Published Version
page: e0279838
pmid: 1
publication: PLoS One
publication_identifier:
  eissn:
  - 1932-6203
publication_status: published
publisher: Public Library of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: Empirical parameterisation and dynamical analysis of the allometric Rosenzweig-MacArthur
  equations
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 18
year: '2023'
...
---
_id: '12738'
abstract:
- lang: eng
  text: We study turn-based stochastic zero-sum games with lexicographic preferences
    over objectives. Stochastic games are standard models in control, verification,
    and synthesis of stochastic reactive systems that exhibit both randomness as well
    as controllable and adversarial non-determinism. Lexicographic order allows one
    to consider multiple objectives with a strict preference order. To the best of
    our knowledge, stochastic games with lexicographic objectives have not been studied
    before. For a mixture of reachability and safety objectives, we show that deterministic
    lexicographically optimal strategies exist and memory is only required to remember
    the already satisfied and violated objectives. For a constant number of objectives,
    we show that the relevant decision problem is in NP∩coNP, matching the current
    known bound for single objectives; and in general the decision problem is PSPACE-hard
    and can be solved in NEXPTIME∩coNEXPTIME. We present an algorithm that computes
    the lexicographically optimal strategies via a reduction to the computation of
    optimal strategies in a sequence of single-objectives games. For omega-regular
    objectives, we restrict our analysis to one-player games, also known as Markov
    decision processes. We show that lexicographically optimal strategies exist and
    need either randomization or finite memory. We present an algorithm that solves
    the relevant decision problem in polynomial time. We have implemented our algorithms
    and report experimental results on various case studies.
acknowledgement: Tobias Winkler and Joost-Pieter Katoen are supported by the DFG RTG
  2236 UnRAVeL and the innovation programme under the Marie Skłodowska-Curie grant
  agreement No. 101008233 (Mission). Krishnendu Chatterjee is supported by the ERC
  CoG 863818 (ForM-SMArt) and the Vienna Science and Technology Fund (WWTF) Project
  ICT15-003. Maximilian Weininger is supported by the DFG projects 383882557 Statistical
  Unbounded Verification (SUV) and 427755713 Group-By Objectives in Probabilistic
  Verification (GOPro). Stefanie Mohr is supported by the DFG RTG 2428 CONVEY. Open
  Access funding enabled and organized by Projekt DEAL.
article_processing_charge: No
article_type: original
author:
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Joost P
  full_name: Katoen, Joost P
  id: 4524F760-F248-11E8-B48F-1D18A9856A87
  last_name: Katoen
- first_name: Stefanie
  full_name: Mohr, Stefanie
  last_name: Mohr
- first_name: Maximilian
  full_name: Weininger, Maximilian
  last_name: Weininger
- first_name: Tobias
  full_name: Winkler, Tobias
  last_name: Winkler
citation:
  ama: Chatterjee K, Katoen JP, Mohr S, Weininger M, Winkler T. Stochastic games with
    lexicographic objectives. <i>Formal Methods in System Design</i>. 2023. doi:<a
    href="https://doi.org/10.1007/s10703-023-00411-4">10.1007/s10703-023-00411-4</a>
  apa: Chatterjee, K., Katoen, J. P., Mohr, S., Weininger, M., &#38; Winkler, T. (2023).
    Stochastic games with lexicographic objectives. <i>Formal Methods in System Design</i>.
    Springer Nature. <a href="https://doi.org/10.1007/s10703-023-00411-4">https://doi.org/10.1007/s10703-023-00411-4</a>
  chicago: Chatterjee, Krishnendu, Joost P Katoen, Stefanie Mohr, Maximilian Weininger,
    and Tobias Winkler. “Stochastic Games with Lexicographic Objectives.” <i>Formal
    Methods in System Design</i>. Springer Nature, 2023. <a href="https://doi.org/10.1007/s10703-023-00411-4">https://doi.org/10.1007/s10703-023-00411-4</a>.
  ieee: K. Chatterjee, J. P. Katoen, S. Mohr, M. Weininger, and T. Winkler, “Stochastic
    games with lexicographic objectives,” <i>Formal Methods in System Design</i>.
    Springer Nature, 2023.
  ista: Chatterjee K, Katoen JP, Mohr S, Weininger M, Winkler T. 2023. Stochastic
    games with lexicographic objectives. Formal Methods in System Design.
  mla: Chatterjee, Krishnendu, et al. “Stochastic Games with Lexicographic Objectives.”
    <i>Formal Methods in System Design</i>, Springer Nature, 2023, doi:<a href="https://doi.org/10.1007/s10703-023-00411-4">10.1007/s10703-023-00411-4</a>.
  short: K. Chatterjee, J.P. Katoen, S. Mohr, M. Weininger, T. Winkler, Formal Methods
    in System Design (2023).
date_created: 2023-03-19T23:00:59Z
date_published: 2023-03-08T00:00:00Z
date_updated: 2025-07-14T09:10:14Z
day: '08'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1007/s10703-023-00411-4
ec_funded: 1
external_id:
  isi:
  - '000946174300001'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1007/s10703-023-00411-4
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 25892FC0-B435-11E9-9278-68D0E5697425
  grant_number: ICT15-003
  name: Efficient Algorithms for Computer Aided Verification
publication: Formal Methods in System Design
publication_identifier:
  eissn:
  - 1572-8102
publication_status: epub_ahead
publisher: Springer Nature
quality_controlled: '1'
related_material:
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  - id: '8272'
    relation: earlier_version
    status: public
scopus_import: '1'
status: public
title: Stochastic games with lexicographic objectives
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '12787'
abstract:
- lang: eng
  text: "Populations evolve in spatially heterogeneous environments. While a certain
    trait might bring a fitness advantage in some patch of the environment, a different
    trait might be advantageous in another patch. Here, we study the Moran birth–death
    process with two types of individuals in a population stretched across two patches
    of size N, each patch favouring one of the two types. We show that the long-term
    fate of such populations crucially depends on the migration rate μ\r\n between
    the patches. To classify the possible fates, we use the distinction between polynomial
    (short) and exponential (long) timescales. We show that when μ is high then one
    of the two types fixates on the whole population after a number of steps that
    is only polynomial in N. By contrast, when μ is low then each type holds majority
    in the patch where it is favoured for a number of steps that is at least exponential
    in N. Moreover, we precisely identify the threshold migration rate μ⋆ that separates
    those two scenarios, thereby exactly delineating the situations that support long-term
    coexistence of the two types. We also discuss the case of various cycle graphs
    and we present computer simulations that perfectly match our analytical results."
acknowledgement: J.S. and K.C. acknowledge support from the ERC CoG 863818 (ForM-SMArt)
article_number: '20220685'
article_processing_charge: No
article_type: original
author:
- first_name: Jakub
  full_name: Svoboda, Jakub
  id: 130759D2-D7DD-11E9-87D2-DE0DE6697425
  last_name: Svoboda
  orcid: 0000-0002-1419-3267
- first_name: Josef
  full_name: Tkadlec, Josef
  id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87
  last_name: Tkadlec
  orcid: 0000-0002-1097-9684
- first_name: Kamran
  full_name: Kaveh, Kamran
  last_name: Kaveh
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
citation:
  ama: 'Svoboda J, Tkadlec J, Kaveh K, Chatterjee K. Coexistence times in the Moran
    process with environmental heterogeneity. <i>Proceedings of the Royal Society
    A: Mathematical, Physical and Engineering Sciences</i>. 2023;479(2271). doi:<a
    href="https://doi.org/10.1098/rspa.2022.0685">10.1098/rspa.2022.0685</a>'
  apa: 'Svoboda, J., Tkadlec, J., Kaveh, K., &#38; Chatterjee, K. (2023). Coexistence
    times in the Moran process with environmental heterogeneity. <i>Proceedings of
    the Royal Society A: Mathematical, Physical and Engineering Sciences</i>. The
    Royal Society. <a href="https://doi.org/10.1098/rspa.2022.0685">https://doi.org/10.1098/rspa.2022.0685</a>'
  chicago: 'Svoboda, Jakub, Josef Tkadlec, Kamran Kaveh, and Krishnendu Chatterjee.
    “Coexistence Times in the Moran Process with Environmental Heterogeneity.” <i>Proceedings
    of the Royal Society A: Mathematical, Physical and Engineering Sciences</i>. The
    Royal Society, 2023. <a href="https://doi.org/10.1098/rspa.2022.0685">https://doi.org/10.1098/rspa.2022.0685</a>.'
  ieee: 'J. Svoboda, J. Tkadlec, K. Kaveh, and K. Chatterjee, “Coexistence times in
    the Moran process with environmental heterogeneity,” <i>Proceedings of the Royal
    Society A: Mathematical, Physical and Engineering Sciences</i>, vol. 479, no.
    2271. The Royal Society, 2023.'
  ista: 'Svoboda J, Tkadlec J, Kaveh K, Chatterjee K. 2023. Coexistence times in the
    Moran process with environmental heterogeneity. Proceedings of the Royal Society
    A: Mathematical, Physical and Engineering Sciences. 479(2271), 20220685.'
  mla: 'Svoboda, Jakub, et al. “Coexistence Times in the Moran Process with Environmental
    Heterogeneity.” <i>Proceedings of the Royal Society A: Mathematical, Physical
    and Engineering Sciences</i>, vol. 479, no. 2271, 20220685, The Royal Society,
    2023, doi:<a href="https://doi.org/10.1098/rspa.2022.0685">10.1098/rspa.2022.0685</a>.'
  short: 'J. Svoboda, J. Tkadlec, K. Kaveh, K. Chatterjee, Proceedings of the Royal
    Society A: Mathematical, Physical and Engineering Sciences 479 (2023).'
date_created: 2023-04-02T22:01:09Z
date_published: 2023-03-29T00:00:00Z
date_updated: 2025-07-14T09:09:51Z
day: '29'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1098/rspa.2022.0685
ec_funded: 1
external_id:
  isi:
  - '000957125500002'
file:
- access_level: open_access
  checksum: 13953d349fbefcb5d21ccc6b303297eb
  content_type: application/pdf
  creator: dernst
  date_created: 2023-04-03T06:25:29Z
  date_updated: 2023-04-03T06:25:29Z
  file_id: '12796'
  file_name: 2023_ProceedingsRoyalSocietyA_Svoboda.pdf
  file_size: 827784
  relation: main_file
  success: 1
file_date_updated: 2023-04-03T06:25:29Z
has_accepted_license: '1'
intvolume: '       479'
isi: 1
issue: '2271'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication: 'Proceedings of the Royal Society A: Mathematical, Physical and Engineering
  Sciences'
publication_identifier:
  eissn:
  - 1471-2946
  issn:
  - 1364-5021
publication_status: published
publisher: The Royal Society
quality_controlled: '1'
related_material:
  link:
  - relation: research_data
    url: https://doi.org/10.6084/m9.figshare.21261771.v1
scopus_import: '1'
status: public
title: Coexistence times in the Moran process with environmental heterogeneity
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 479
year: '2023'
...
---
_id: '12833'
abstract:
- lang: eng
  text: 'The input to the token swapping problem is a graph with vertices v1, v2,
    . . . , vn, and n tokens with labels 1,2, . . . , n, one on each vertex. The goal
    is to get token i to vertex vi for all i= 1, . . . , n using a minimum number
    of swaps, where a swap exchanges the tokens on the endpoints of an edge.Token
    swapping on a tree, also known as “sorting with a transposition tree,” is not
    known to be in P nor NP-complete. We present some partial results: 1. An optimum
    swap sequence may need to perform a swap on a leaf vertex that has the correct
    token (a “happy leaf”), disproving a conjecture of Vaughan. 2. Any algorithm that
    fixes happy leaves—as all known approximation algorithms for the problem do—has
    approximation factor at least 4/3. Furthermore, the two best-known 2-approximation
    algorithms have approximation factor exactly 2. 3. A generalized problem—weighted
    coloured token swapping—is NP-complete on trees, but solvable in polynomial time
    on paths and stars. In this version, tokens and vertices have colours, and colours
    have weights. The goal is to get every token to a vertex of the same colour, and
    the cost of a swap is the sum of the weights of the two tokens involved.'
acknowledgement: "This work was begun at the University of Waterloo and was partially
  supported by the Natural Sciences and Engineering Council of Canada (NSERC).\r\n"
article_number: '9'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Ahmad
  full_name: Biniaz, Ahmad
  last_name: Biniaz
- first_name: Kshitij
  full_name: Jain, Kshitij
  last_name: Jain
- first_name: Anna
  full_name: Lubiw, Anna
  last_name: Lubiw
- first_name: Zuzana
  full_name: Masárová, Zuzana
  id: 45CFE238-F248-11E8-B48F-1D18A9856A87
  last_name: Masárová
  orcid: 0000-0002-6660-1322
- first_name: Tillmann
  full_name: Miltzow, Tillmann
  last_name: Miltzow
- first_name: Debajyoti
  full_name: Mondal, Debajyoti
  last_name: Mondal
- first_name: Anurag Murty
  full_name: Naredla, Anurag Murty
  last_name: Naredla
- first_name: Josef
  full_name: Tkadlec, Josef
  id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87
  last_name: Tkadlec
  orcid: 0000-0002-1097-9684
- first_name: Alexi
  full_name: Turcotte, Alexi
  last_name: Turcotte
citation:
  ama: Biniaz A, Jain K, Lubiw A, et al. Token swapping on trees. <i>Discrete Mathematics
    and Theoretical Computer Science</i>. 2023;24(2). doi:<a href="https://doi.org/10.46298/DMTCS.8383">10.46298/DMTCS.8383</a>
  apa: Biniaz, A., Jain, K., Lubiw, A., Masárová, Z., Miltzow, T., Mondal, D., … Turcotte,
    A. (2023). Token swapping on trees. <i>Discrete Mathematics and Theoretical Computer
    Science</i>. EPI Sciences. <a href="https://doi.org/10.46298/DMTCS.8383">https://doi.org/10.46298/DMTCS.8383</a>
  chicago: Biniaz, Ahmad, Kshitij Jain, Anna Lubiw, Zuzana Masárová, Tillmann Miltzow,
    Debajyoti Mondal, Anurag Murty Naredla, Josef Tkadlec, and Alexi Turcotte. “Token
    Swapping on Trees.” <i>Discrete Mathematics and Theoretical Computer Science</i>.
    EPI Sciences, 2023. <a href="https://doi.org/10.46298/DMTCS.8383">https://doi.org/10.46298/DMTCS.8383</a>.
  ieee: A. Biniaz <i>et al.</i>, “Token swapping on trees,” <i>Discrete Mathematics
    and Theoretical Computer Science</i>, vol. 24, no. 2. EPI Sciences, 2023.
  ista: Biniaz A, Jain K, Lubiw A, Masárová Z, Miltzow T, Mondal D, Naredla AM, Tkadlec
    J, Turcotte A. 2023. Token swapping on trees. Discrete Mathematics and Theoretical
    Computer Science. 24(2), 9.
  mla: Biniaz, Ahmad, et al. “Token Swapping on Trees.” <i>Discrete Mathematics and
    Theoretical Computer Science</i>, vol. 24, no. 2, 9, EPI Sciences, 2023, doi:<a
    href="https://doi.org/10.46298/DMTCS.8383">10.46298/DMTCS.8383</a>.
  short: A. Biniaz, K. Jain, A. Lubiw, Z. Masárová, T. Miltzow, D. Mondal, A.M. Naredla,
    J. Tkadlec, A. Turcotte, Discrete Mathematics and Theoretical Computer Science
    24 (2023).
date_created: 2023-04-16T22:01:08Z
date_published: 2023-01-18T00:00:00Z
date_updated: 2024-01-04T12:42:09Z
day: '18'
ddc:
- '000'
department:
- _id: KrCh
- _id: HeEd
- _id: UlWa
doi: 10.46298/DMTCS.8383
external_id:
  arxiv:
  - '1903.06981'
file:
- access_level: open_access
  checksum: 439102ea4f6e2aeefd7107dfb9ccf532
  content_type: application/pdf
  creator: dernst
  date_created: 2023-04-17T08:10:28Z
  date_updated: 2023-04-17T08:10:28Z
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  relation: main_file
  success: 1
file_date_updated: 2023-04-17T08:10:28Z
has_accepted_license: '1'
intvolume: '        24'
issue: '2'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
publication: Discrete Mathematics and Theoretical Computer Science
publication_identifier:
  eissn:
  - 1365-8050
  issn:
  - 1462-7264
publication_status: published
publisher: EPI Sciences
quality_controlled: '1'
related_material:
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    status: public
scopus_import: '1'
status: public
title: Token swapping on trees
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 24
year: '2023'
...
---
_id: '12861'
abstract:
- lang: eng
  text: The field of indirect reciprocity investigates how social norms can foster
    cooperation when individuals continuously monitor and assess each other’s social
    interactions. By adhering to certain social norms, cooperating individuals can
    improve their reputation and, in turn, receive benefits from others. Eight social
    norms, known as the “leading eight," have been shown to effectively promote the
    evolution of cooperation as long as information is public and reliable. These
    norms categorize group members as either ’good’ or ’bad’. In this study, we examine
    a scenario where individuals instead assign nuanced reputation scores to each
    other, and only cooperate with those whose reputation exceeds a certain threshold.
    We find both analytically and through simulations that such quantitative assessments
    are error-correcting, thus facilitating cooperation in situations where information
    is private and unreliable. Moreover, our results identify four specific norms
    that are robust to such conditions, and may be relevant for helping to sustain
    cooperation in natural populations.
acknowledgement: 'This work was supported by the European Research Council CoG 863818
  (ForM-SMArt) (to K.C.) and the European Research Council Starting Grant 850529:
  E-DIRECT (to C.H.). L.S. received additional partial support by the Austrian Science
  Fund (FWF) under grant Z211-N23 (Wittgenstein Award), and also thanks the support
  by the Stochastic Analysis and Application Research Center (SAARC) under National
  Research Foundation of Korea grant NRF-2019R1A5A1028324. The authors additionally
  thank Stefan Schmid for providing access to his lab infrastructure at the University
  of Vienna for the purpose of collecting simulation data.'
article_number: '2086'
article_processing_charge: No
article_type: original
author:
- first_name: Laura
  full_name: Schmid, Laura
  id: 38B437DE-F248-11E8-B48F-1D18A9856A87
  last_name: Schmid
  orcid: 0000-0002-6978-7329
- first_name: Farbod
  full_name: Ekbatani, Farbod
  last_name: Ekbatani
- first_name: Christian
  full_name: Hilbe, Christian
  id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87
  last_name: Hilbe
  orcid: 0000-0001-5116-955X
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
citation:
  ama: Schmid L, Ekbatani F, Hilbe C, Chatterjee K. Quantitative assessment can stabilize
    indirect reciprocity under imperfect information. <i>Nature Communications</i>.
    2023;14. doi:<a href="https://doi.org/10.1038/s41467-023-37817-x">10.1038/s41467-023-37817-x</a>
  apa: Schmid, L., Ekbatani, F., Hilbe, C., &#38; Chatterjee, K. (2023). Quantitative
    assessment can stabilize indirect reciprocity under imperfect information. <i>Nature
    Communications</i>. Springer Nature. <a href="https://doi.org/10.1038/s41467-023-37817-x">https://doi.org/10.1038/s41467-023-37817-x</a>
  chicago: Schmid, Laura, Farbod Ekbatani, Christian Hilbe, and Krishnendu Chatterjee.
    “Quantitative Assessment Can Stabilize Indirect Reciprocity under Imperfect Information.”
    <i>Nature Communications</i>. Springer Nature, 2023. <a href="https://doi.org/10.1038/s41467-023-37817-x">https://doi.org/10.1038/s41467-023-37817-x</a>.
  ieee: L. Schmid, F. Ekbatani, C. Hilbe, and K. Chatterjee, “Quantitative assessment
    can stabilize indirect reciprocity under imperfect information,” <i>Nature Communications</i>,
    vol. 14. Springer Nature, 2023.
  ista: Schmid L, Ekbatani F, Hilbe C, Chatterjee K. 2023. Quantitative assessment
    can stabilize indirect reciprocity under imperfect information. Nature Communications.
    14, 2086.
  mla: Schmid, Laura, et al. “Quantitative Assessment Can Stabilize Indirect Reciprocity
    under Imperfect Information.” <i>Nature Communications</i>, vol. 14, 2086, Springer
    Nature, 2023, doi:<a href="https://doi.org/10.1038/s41467-023-37817-x">10.1038/s41467-023-37817-x</a>.
  short: L. Schmid, F. Ekbatani, C. Hilbe, K. Chatterjee, Nature Communications 14
    (2023).
date_created: 2023-04-23T22:01:03Z
date_published: 2023-04-12T00:00:00Z
date_updated: 2025-07-14T09:09:52Z
day: '12'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1038/s41467-023-37817-x
ec_funded: 1
external_id:
  isi:
  - '001003644100020'
  pmid:
  - '37045828'
file:
- access_level: open_access
  checksum: a4b3b7b36fbef068cabf4fb99501fef6
  content_type: application/pdf
  creator: dernst
  date_created: 2023-04-25T09:13:53Z
  date_updated: 2023-04-25T09:13:53Z
  file_id: '12868'
  file_name: 2023_NatureComm_Schmid.pdf
  file_size: 1786475
  relation: main_file
  success: 1
file_date_updated: 2023-04-25T09:13:53Z
has_accepted_license: '1'
intvolume: '        14'
isi: 1
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: The Wittgenstein Prize
publication: Nature Communications
publication_identifier:
  eissn:
  - 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantitative assessment can stabilize indirect reciprocity under imperfect
  information
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 14
year: '2023'
...
---
_id: '10731'
abstract:
- lang: eng
  text: Motivated by COVID-19, we develop and analyze a simple stochastic model for
    the spread of disease in human population. We track how the number of infected
    and critically ill people develops over time in order to estimate the demand that
    is imposed on the hospital system. To keep this demand under control, we consider
    a class of simple policies for slowing down and reopening society and we compare
    their efficiency in mitigating the spread of the virus from several different
    points of view. We find that in order to avoid overwhelming of the hospital system,
    a policy must impose a harsh lockdown or it must react swiftly (or both). While
    reacting swiftly is universally beneficial, being harsh pays off only when the
    country is patient about reopening and when the neighboring countries coordinate
    their mitigation efforts. Our work highlights the importance of acting decisively
    when closing down and the importance of patience and coordination between neighboring
    countries when reopening.
acknowledgement: 'K.C. acknowledges support from ERC Consolidator Grant No. (863818:
  ForM-SMart). A.P. acknowledges support from FWF Grant No. J-4220. M.A.N. acknowledges
  support from Office of Naval Research grant N00014-16-1-2914 and from the John Templeton
  Foundation.'
article_number: '1526'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Jakub
  full_name: Svoboda, Jakub
  id: 130759D2-D7DD-11E9-87D2-DE0DE6697425
  last_name: Svoboda
  orcid: 0000-0002-1419-3267
- first_name: Josef
  full_name: Tkadlec, Josef
  last_name: Tkadlec
- first_name: Andreas
  full_name: Pavlogiannis, Andreas
  id: 49704004-F248-11E8-B48F-1D18A9856A87
  last_name: Pavlogiannis
  orcid: 0000-0002-8943-0722
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Martin A.
  full_name: Nowak, Martin A.
  last_name: Nowak
citation:
  ama: Svoboda J, Tkadlec J, Pavlogiannis A, Chatterjee K, Nowak MA. Infection dynamics
    of COVID-19 virus under lockdown and reopening. <i>Scientific Reports</i>. 2022;12(1).
    doi:<a href="https://doi.org/10.1038/s41598-022-05333-5">10.1038/s41598-022-05333-5</a>
  apa: Svoboda, J., Tkadlec, J., Pavlogiannis, A., Chatterjee, K., &#38; Nowak, M.
    A. (2022). Infection dynamics of COVID-19 virus under lockdown and reopening.
    <i>Scientific Reports</i>. Springer Nature. <a href="https://doi.org/10.1038/s41598-022-05333-5">https://doi.org/10.1038/s41598-022-05333-5</a>
  chicago: Svoboda, Jakub, Josef Tkadlec, Andreas Pavlogiannis, Krishnendu Chatterjee,
    and Martin A. Nowak. “Infection Dynamics of COVID-19 Virus under Lockdown and
    Reopening.” <i>Scientific Reports</i>. Springer Nature, 2022. <a href="https://doi.org/10.1038/s41598-022-05333-5">https://doi.org/10.1038/s41598-022-05333-5</a>.
  ieee: J. Svoboda, J. Tkadlec, A. Pavlogiannis, K. Chatterjee, and M. A. Nowak, “Infection
    dynamics of COVID-19 virus under lockdown and reopening,” <i>Scientific Reports</i>,
    vol. 12, no. 1. Springer Nature, 2022.
  ista: Svoboda J, Tkadlec J, Pavlogiannis A, Chatterjee K, Nowak MA. 2022. Infection
    dynamics of COVID-19 virus under lockdown and reopening. Scientific Reports. 12(1),
    1526.
  mla: Svoboda, Jakub, et al. “Infection Dynamics of COVID-19 Virus under Lockdown
    and Reopening.” <i>Scientific Reports</i>, vol. 12, no. 1, 1526, Springer Nature,
    2022, doi:<a href="https://doi.org/10.1038/s41598-022-05333-5">10.1038/s41598-022-05333-5</a>.
  short: J. Svoboda, J. Tkadlec, A. Pavlogiannis, K. Chatterjee, M.A. Nowak, Scientific
    Reports 12 (2022).
date_created: 2022-02-06T23:01:30Z
date_published: 2022-01-27T00:00:00Z
date_updated: 2025-07-14T09:10:12Z
day: '27'
ddc:
- '570'
department:
- _id: KrCh
doi: 10.1038/s41598-022-05333-5
ec_funded: 1
external_id:
  arxiv:
  - '2012.15155'
  isi:
  - '000749198000039'
file:
- access_level: open_access
  checksum: 247afd30c173390940f099ead35a28ed
  content_type: application/pdf
  creator: alisjak
  date_created: 2022-02-07T14:57:59Z
  date_updated: 2022-02-07T14:57:59Z
  file_id: '10744'
  file_name: 2022_ScientificReports_Svoboda.pdf
  file_size: 2971922
  relation: main_file
  success: 1
file_date_updated: 2022-02-07T14:57:59Z
has_accepted_license: '1'
intvolume: '        12'
isi: 1
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication: Scientific Reports
publication_identifier:
  eissn:
  - 2045-2322
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Infection dynamics of COVID-19 virus under lockdown and reopening
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 12
year: '2022'
...
---
_id: '11402'
abstract:
- lang: eng
  text: Fixed-horizon planning considers a weighted graph and asks to construct a
    path that maximizes the sum of weights for a given time horizon T. However, in
    many scenarios, the time horizon is not fixed, but the stopping time is chosen
    according to some distribution such that the expected stopping time is T. If the
    stopping-time distribution is not known, then to ensure robustness, the distribution
    is chosen by an adversary as the worst-case scenario. A stationary plan for every
    vertex always chooses the same outgoing edge. For fixed horizon or fixed stopping-time
    distribution, stationary plans are not sufficient for optimality. Quite surprisingly
    we show that when an adversary chooses the stopping-time distribution with expected
    stopping-time T, then stationary plans are sufficient. While computing optimal
    stationary plans for fixed horizon is NP-complete, we show that computing optimal
    stationary plans under adversarial stopping-time distribution can be achieved
    in polynomial time.
acknowledgement: This work was partially supported by Austrian Science Fund (FWF)
  NFN Grant No RiSE/SHiNE S11407 and by the grant ERC CoG 863818 (ForM-SMArt).
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Laurent
  full_name: Doyen, Laurent
  last_name: Doyen
citation:
  ama: Chatterjee K, Doyen L. Graph planning with expected finite horizon. <i>Journal
    of Computer and System Sciences</i>. 2022;129:1-21. doi:<a href="https://doi.org/10.1016/j.jcss.2022.04.003">10.1016/j.jcss.2022.04.003</a>
  apa: Chatterjee, K., &#38; Doyen, L. (2022). Graph planning with expected finite
    horizon. <i>Journal of Computer and System Sciences</i>. Elsevier. <a href="https://doi.org/10.1016/j.jcss.2022.04.003">https://doi.org/10.1016/j.jcss.2022.04.003</a>
  chicago: Chatterjee, Krishnendu, and Laurent Doyen. “Graph Planning with Expected
    Finite Horizon.” <i>Journal of Computer and System Sciences</i>. Elsevier, 2022.
    <a href="https://doi.org/10.1016/j.jcss.2022.04.003">https://doi.org/10.1016/j.jcss.2022.04.003</a>.
  ieee: K. Chatterjee and L. Doyen, “Graph planning with expected finite horizon,”
    <i>Journal of Computer and System Sciences</i>, vol. 129. Elsevier, pp. 1–21,
    2022.
  ista: Chatterjee K, Doyen L. 2022. Graph planning with expected finite horizon.
    Journal of Computer and System Sciences. 129, 1–21.
  mla: Chatterjee, Krishnendu, and Laurent Doyen. “Graph Planning with Expected Finite
    Horizon.” <i>Journal of Computer and System Sciences</i>, vol. 129, Elsevier,
    2022, pp. 1–21, doi:<a href="https://doi.org/10.1016/j.jcss.2022.04.003">10.1016/j.jcss.2022.04.003</a>.
  short: K. Chatterjee, L. Doyen, Journal of Computer and System Sciences 129 (2022)
    1–21.
date_created: 2022-05-22T22:01:40Z
date_published: 2022-11-01T00:00:00Z
date_updated: 2025-07-14T09:09:54Z
day: '01'
department:
- _id: KrCh
doi: 10.1016/j.jcss.2022.04.003
ec_funded: 1
external_id:
  arxiv:
  - '1802.03642'
  isi:
  - '000805002800001'
intvolume: '       129'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: ' https://doi.org/10.48550/arXiv.1802.03642'
month: '11'
oa: 1
oa_version: Preprint
page: 1-21
project:
- _id: 25863FF4-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: S11407
  name: Game Theory
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication: Journal of Computer and System Sciences
publication_identifier:
  eissn:
  - 1090-2724
  issn:
  - 0022-0000
publication_status: published
publisher: Elsevier
quality_controlled: '1'
related_material:
  record:
  - id: '7402'
    relation: earlier_version
    status: public
scopus_import: '1'
status: public
title: Graph planning with expected finite horizon
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 129
year: '2022'
...
---
_id: '11459'
abstract:
- lang: eng
  text: 'We present a novel approach to differential cost analysis that, given a program
    revision, attempts to statically bound the difference in resource usage, or cost,
    between the two program versions. Differential cost analysis is particularly interesting
    because of the many compelling applications for it, such as detecting resource-use
    regressions at code-review time or proving the absence of certain side-channel
    vulnerabilities. One prior approach to differential cost analysis is to apply
    relational reasoning that conceptually constructs a product program on which one
    can over-approximate the difference in costs between the two program versions.
    However, a significant challenge in any relational approach is effectively aligning
    the program versions to get precise results. In this paper, our key insight is
    that we can avoid the need for and the limitations of program alignment if, instead,
    we bound the difference of two cost-bound summaries rather than directly bounding
    the concrete cost difference. In particular, our method computes a threshold value
    for the maximal difference in cost between two program versions simultaneously
    using two kinds of cost-bound summaries---a potential function that evaluates
    to an upper bound for the cost incurred in the first program and an anti-potential
    function that evaluates to a lower bound for the cost incurred in the second.
    Our method has a number of desirable properties: it can be fully automated, it
    allows optimizing the threshold value on relative cost, it is suitable for programs
    that are not syntactically similar, and it supports non-determinism. We have evaluated
    an implementation of our approach on a number of program pairs collected from
    the literature, and we find that our method computes tight threshold values on
    relative cost in most examples.'
acknowledgement: "We thank Shaun Willows, Thomas Lugnet, and the Living Room Application
  Vending team for suggesting threshold\r\nbounds as a developer-friendly way to interact
  with a differential cost analyzer, and we thank Jim Christy, Daniel\r\nSchoepe,
  and the Prime Video Automated Reasoning team for their support and helpful suggestions
  throughout the\r\nproject. We also thank Michael Emmi for feedback on an earlier
  version of this paper. And finally, we thank the anonymous reviewers for their useful
  feedback and Aws Albarghouthi for shepherding the final version of the paper. Ðorđe
  Žikelić was also partially supported by ERC CoG 863818 (FoRM-SMArt)."
article_processing_charge: No
arxiv: 1
author:
- first_name: Dorde
  full_name: Zikelic, Dorde
  id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
  last_name: Zikelic
  orcid: 0000-0002-4681-1699
- first_name: Bor-Yuh Evan
  full_name: Chang, Bor-Yuh Evan
  last_name: Chang
- first_name: Pauline
  full_name: Bolignano, Pauline
  last_name: Bolignano
- first_name: Franco
  full_name: Raimondi, Franco
  last_name: Raimondi
citation:
  ama: 'Zikelic D, Chang B-YE, Bolignano P, Raimondi F. Differential cost analysis
    with simultaneous potentials and anti-potentials. In: <i>Proceedings of the 43rd
    ACM SIGPLAN International Conference on Programming Language Design and Implementation</i>.
    Association for Computing Machinery; 2022:442-457. doi:<a href="https://doi.org/10.1145/3519939.3523435">10.1145/3519939.3523435</a>'
  apa: 'Zikelic, D., Chang, B.-Y. E., Bolignano, P., &#38; Raimondi, F. (2022). Differential
    cost analysis with simultaneous potentials and anti-potentials. In <i>Proceedings
    of the 43rd ACM SIGPLAN International Conference on Programming Language Design
    and Implementation</i> (pp. 442–457). San Diego, CA, United States: Association
    for Computing Machinery. <a href="https://doi.org/10.1145/3519939.3523435">https://doi.org/10.1145/3519939.3523435</a>'
  chicago: Zikelic, Dorde, Bor-Yuh Evan Chang, Pauline Bolignano, and Franco Raimondi.
    “Differential Cost Analysis with Simultaneous Potentials and Anti-Potentials.”
    In <i>Proceedings of the 43rd ACM SIGPLAN International Conference on Programming
    Language Design and Implementation</i>, 442–57. Association for Computing Machinery,
    2022. <a href="https://doi.org/10.1145/3519939.3523435">https://doi.org/10.1145/3519939.3523435</a>.
  ieee: D. Zikelic, B.-Y. E. Chang, P. Bolignano, and F. Raimondi, “Differential cost
    analysis with simultaneous potentials and anti-potentials,” in <i>Proceedings
    of the 43rd ACM SIGPLAN International Conference on Programming Language Design
    and Implementation</i>, San Diego, CA, United States, 2022, pp. 442–457.
  ista: 'Zikelic D, Chang B-YE, Bolignano P, Raimondi F. 2022. Differential cost analysis
    with simultaneous potentials and anti-potentials. Proceedings of the 43rd ACM
    SIGPLAN International Conference on Programming Language Design and Implementation.
    PLDI: Programming Language Design and Implementation, 442–457.'
  mla: Zikelic, Dorde, et al. “Differential Cost Analysis with Simultaneous Potentials
    and Anti-Potentials.” <i>Proceedings of the 43rd ACM SIGPLAN International Conference
    on Programming Language Design and Implementation</i>, Association for Computing
    Machinery, 2022, pp. 442–57, doi:<a href="https://doi.org/10.1145/3519939.3523435">10.1145/3519939.3523435</a>.
  short: D. Zikelic, B.-Y.E. Chang, P. Bolignano, F. Raimondi, in:, Proceedings of
    the 43rd ACM SIGPLAN International Conference on Programming Language Design and
    Implementation, Association for Computing Machinery, 2022, pp. 442–457.
conference:
  end_date: 2022-06-17
  location: San Diego, CA, United States
  name: 'PLDI: Programming Language Design and Implementation'
  start_date: 2022-06-13
date_created: 2022-06-21T09:26:15Z
date_published: 2022-06-09T00:00:00Z
date_updated: 2025-07-14T09:09:54Z
day: '09'
ddc:
- '000'
department:
- _id: GradSch
- _id: KrCh
doi: 10.1145/3519939.3523435
ec_funded: 1
external_id:
  arxiv:
  - '2204.00870'
  isi:
  - '000850435600030'
file:
- access_level: open_access
  checksum: 7eb915a2ca5b5ce4729321f33b2e16e1
  content_type: application/pdf
  creator: dernst
  date_created: 2022-06-27T07:38:21Z
  date_updated: 2022-06-27T07:38:21Z
  file_id: '11466'
  file_name: 2022_PLDI_Zikelic.pdf
  file_size: 318697
  relation: main_file
  success: 1
file_date_updated: 2022-06-27T07:38:21Z
has_accepted_license: '1'
isi: 1
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/4.0/
month: '06'
oa: 1
oa_version: Published Version
page: 442-457
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication: Proceedings of the 43rd ACM SIGPLAN International Conference on Programming
  Language Design and Implementation
publication_identifier:
  isbn:
  - '9781450392655'
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: Differential cost analysis with simultaneous potentials and anti-potentials
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: conference
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
year: '2022'
...
---
_id: '14600'
abstract:
- lang: eng
  text: We study the problem of learning controllers for discrete-time non-linear
    stochastic dynamical systems with formal reach-avoid guarantees. This work presents
    the first method for providing formal reach-avoid guarantees, which combine and
    generalize stability and safety guarantees, with a tolerable probability threshold
    $p\in[0,1]$ over the infinite time horizon. Our method leverages advances in machine
    learning literature and it represents formal certificates as neural networks.
    In particular, we learn a certificate in the form of a reach-avoid supermartingale
    (RASM), a novel notion that we introduce in this work. Our RASMs provide reachability
    and avoidance guarantees by imposing constraints on what can be viewed as a stochastic
    extension of level sets of Lyapunov functions for deterministic systems. Our approach
    solves several important problems -- it can be used to learn a control policy
    from scratch, to verify a reach-avoid specification for a fixed control policy,
    or to fine-tune a pre-trained policy if it does not satisfy the reach-avoid specification.
    We validate our approach on $3$ stochastic non-linear reinforcement learning tasks.
article_processing_charge: No
arxiv: 1
author:
- first_name: Dorde
  full_name: Zikelic, Dorde
  id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
  last_name: Zikelic
  orcid: 0000-0002-4681-1699
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
citation:
  ama: Zikelic D, Lechner M, Henzinger TA, Chatterjee K. Learning control policies
    for stochastic systems with reach-avoid guarantees. <i>arXiv</i>. doi:<a href="https://doi.org/10.48550/ARXIV.2210.05308">10.48550/ARXIV.2210.05308</a>
  apa: Zikelic, D., Lechner, M., Henzinger, T. A., &#38; Chatterjee, K. (n.d.). Learning
    control policies for stochastic systems with reach-avoid guarantees. <i>arXiv</i>.
    <a href="https://doi.org/10.48550/ARXIV.2210.05308">https://doi.org/10.48550/ARXIV.2210.05308</a>
  chicago: Zikelic, Dorde, Mathias Lechner, Thomas A Henzinger, and Krishnendu Chatterjee.
    “Learning Control Policies for Stochastic Systems with Reach-Avoid Guarantees.”
    <i>ArXiv</i>, n.d. <a href="https://doi.org/10.48550/ARXIV.2210.05308">https://doi.org/10.48550/ARXIV.2210.05308</a>.
  ieee: D. Zikelic, M. Lechner, T. A. Henzinger, and K. Chatterjee, “Learning control
    policies for stochastic systems with reach-avoid guarantees,” <i>arXiv</i>. .
  ista: Zikelic D, Lechner M, Henzinger TA, Chatterjee K. Learning control policies
    for stochastic systems with reach-avoid guarantees. arXiv, <a href="https://doi.org/10.48550/ARXIV.2210.05308">10.48550/ARXIV.2210.05308</a>.
  mla: Zikelic, Dorde, et al. “Learning Control Policies for Stochastic Systems with
    Reach-Avoid Guarantees.” <i>ArXiv</i>, doi:<a href="https://doi.org/10.48550/ARXIV.2210.05308">10.48550/ARXIV.2210.05308</a>.
  short: D. Zikelic, M. Lechner, T.A. Henzinger, K. Chatterjee, ArXiv (n.d.).
date_created: 2023-11-24T13:10:09Z
date_published: 2022-11-29T00:00:00Z
date_updated: 2025-07-14T09:10:02Z
day: '29'
department:
- _id: KrCh
- _id: ToHe
doi: 10.48550/ARXIV.2210.05308
ec_funded: 1
external_id:
  arxiv:
  - '2210.05308'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-sa/4.0/
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2210.05308
month: '11'
oa: 1
oa_version: Preprint
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: arXiv
publication_status: submitted
related_material:
  record:
  - id: '14539'
    relation: dissertation_contains
    status: public
  - id: '14830'
    relation: later_version
    status: public
status: public
title: Learning control policies for stochastic systems with reach-avoid guarantees
tmp:
  image: /images/cc_by_sa.png
  legal_code_url: https://creativecommons.org/licenses/by-sa/4.0/legalcode
  name: Creative Commons Attribution-ShareAlike 4.0 International Public License (CC
    BY-SA 4.0)
  short: CC BY-SA (4.0)
type: preprint
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2022'
...
---
_id: '14601'
abstract:
- lang: eng
  text: "In this work, we address the problem of learning provably stable neural\r\nnetwork
    policies for stochastic control systems. While recent work has\r\ndemonstrated
    the feasibility of certifying given policies using martingale\r\ntheory, the problem
    of how to learn such policies is little explored. Here, we\r\nstudy the effectiveness
    of jointly learning a policy together with a martingale\r\ncertificate that proves
    its stability using a single learning algorithm. We\r\nobserve that the joint
    optimization problem becomes easily stuck in local\r\nminima when starting from
    a randomly initialized policy. Our results suggest\r\nthat some form of pre-training
    of the policy is required for the joint\r\noptimization to repair and verify the
    policy successfully."
article_processing_charge: No
arxiv: 1
author:
- first_name: Dorde
  full_name: Zikelic, Dorde
  id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
  last_name: Zikelic
  orcid: 0000-0002-4681-1699
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
citation:
  ama: Zikelic D, Lechner M, Chatterjee K, Henzinger TA. Learning stabilizing policies
    in stochastic control systems. <i>arXiv</i>. doi:<a href="https://doi.org/10.48550/arXiv.2205.11991">10.48550/arXiv.2205.11991</a>
  apa: Zikelic, D., Lechner, M., Chatterjee, K., &#38; Henzinger, T. A. (n.d.). Learning
    stabilizing policies in stochastic control systems. <i>arXiv</i>. <a href="https://doi.org/10.48550/arXiv.2205.11991">https://doi.org/10.48550/arXiv.2205.11991</a>
  chicago: Zikelic, Dorde, Mathias Lechner, Krishnendu Chatterjee, and Thomas A Henzinger.
    “Learning Stabilizing Policies in Stochastic Control Systems.” <i>ArXiv</i>, n.d.
    <a href="https://doi.org/10.48550/arXiv.2205.11991">https://doi.org/10.48550/arXiv.2205.11991</a>.
  ieee: D. Zikelic, M. Lechner, K. Chatterjee, and T. A. Henzinger, “Learning stabilizing
    policies in stochastic control systems,” <i>arXiv</i>. .
  ista: Zikelic D, Lechner M, Chatterjee K, Henzinger TA. Learning stabilizing policies
    in stochastic control systems. arXiv, <a href="https://doi.org/10.48550/arXiv.2205.11991">10.48550/arXiv.2205.11991</a>.
  mla: Zikelic, Dorde, et al. “Learning Stabilizing Policies in Stochastic Control
    Systems.” <i>ArXiv</i>, doi:<a href="https://doi.org/10.48550/arXiv.2205.11991">10.48550/arXiv.2205.11991</a>.
  short: D. Zikelic, M. Lechner, K. Chatterjee, T.A. Henzinger, ArXiv (n.d.).
date_created: 2023-11-24T13:22:30Z
date_published: 2022-05-24T00:00:00Z
date_updated: 2025-07-14T09:10:00Z
day: '24'
department:
- _id: KrCh
- _id: ToHe
doi: 10.48550/arXiv.2205.11991
ec_funded: 1
external_id:
  arxiv:
  - '2205.11991'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2205.11991
month: '05'
oa: 1
oa_version: Preprint
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: arXiv
publication_status: submitted
related_material:
  record:
  - id: '14539'
    relation: dissertation_contains
    status: public
status: public
title: Learning stabilizing policies in stochastic control systems
type: preprint
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2022'
...
---
_id: '9311'
abstract:
- lang: eng
  text: 'Partially observable Markov decision processes (POMDPs) are standard models
    for dynamic systems with probabilistic and nondeterministic behaviour in uncertain
    environments. We prove that in POMDPs with long-run average objective, the decision
    maker has approximately optimal strategies with finite memory. This implies notably
    that approximating the long-run value is recursively enumerable, as well as a
    weak continuity property of the value with respect to the transition function. '
acknowledgement: "Partially supported by Austrian Science Fund (FWF) NFN Grant No
  RiSE/SHiNE S11407, by CONICYT Chile through grant PII 20150140, and by ECOS-CONICYT
  through grant C15E03.\r\n"
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Raimundo J
  full_name: Saona Urmeneta, Raimundo J
  id: BD1DF4C4-D767-11E9-B658-BC13E6697425
  last_name: Saona Urmeneta
  orcid: 0000-0001-5103-038X
- first_name: Bruno
  full_name: Ziliotto, Bruno
  last_name: Ziliotto
citation:
  ama: Chatterjee K, Saona Urmeneta RJ, Ziliotto B. Finite-memory strategies in POMDPs
    with long-run average objectives. <i>Mathematics of Operations Research</i>. 2022;47(1):100-119.
    doi:<a href="https://doi.org/10.1287/moor.2020.1116">10.1287/moor.2020.1116</a>
  apa: Chatterjee, K., Saona Urmeneta, R. J., &#38; Ziliotto, B. (2022). Finite-memory
    strategies in POMDPs with long-run average objectives. <i>Mathematics of Operations
    Research</i>. Institute for Operations Research and the Management Sciences. <a
    href="https://doi.org/10.1287/moor.2020.1116">https://doi.org/10.1287/moor.2020.1116</a>
  chicago: Chatterjee, Krishnendu, Raimundo J Saona Urmeneta, and Bruno Ziliotto.
    “Finite-Memory Strategies in POMDPs with Long-Run Average Objectives.” <i>Mathematics
    of Operations Research</i>. Institute for Operations Research and the Management
    Sciences, 2022. <a href="https://doi.org/10.1287/moor.2020.1116">https://doi.org/10.1287/moor.2020.1116</a>.
  ieee: K. Chatterjee, R. J. Saona Urmeneta, and B. Ziliotto, “Finite-memory strategies
    in POMDPs with long-run average objectives,” <i>Mathematics of Operations Research</i>,
    vol. 47, no. 1. Institute for Operations Research and the Management Sciences,
    pp. 100–119, 2022.
  ista: Chatterjee K, Saona Urmeneta RJ, Ziliotto B. 2022. Finite-memory strategies
    in POMDPs with long-run average objectives. Mathematics of Operations Research.
    47(1), 100–119.
  mla: Chatterjee, Krishnendu, et al. “Finite-Memory Strategies in POMDPs with Long-Run
    Average Objectives.” <i>Mathematics of Operations Research</i>, vol. 47, no. 1,
    Institute for Operations Research and the Management Sciences, 2022, pp. 100–19,
    doi:<a href="https://doi.org/10.1287/moor.2020.1116">10.1287/moor.2020.1116</a>.
  short: K. Chatterjee, R.J. Saona Urmeneta, B. Ziliotto, Mathematics of Operations
    Research 47 (2022) 100–119.
date_created: 2021-04-08T09:33:31Z
date_published: 2022-02-01T00:00:00Z
date_updated: 2023-09-05T13:16:11Z
day: '01'
department:
- _id: GradSch
- _id: KrCh
doi: 10.1287/moor.2020.1116
external_id:
  arxiv:
  - '1904.13360'
  isi:
  - '000731918100001'
intvolume: '        47'
isi: 1
issue: '1'
keyword:
- Management Science and Operations Research
- General Mathematics
- Computer Science Applications
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1904.13360
month: '02'
oa: 1
oa_version: Preprint
page: 100-119
project:
- _id: 25863FF4-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: S11407
  name: Game Theory
publication: Mathematics of Operations Research
publication_identifier:
  eissn:
  - 1526-5471
  issn:
  - 0364-765X
publication_status: published
publisher: Institute for Operations Research and the Management Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: Finite-memory strategies in POMDPs with long-run average objectives
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 47
year: '2022'
...
---
_id: '10602'
abstract:
- lang: eng
  text: Transforming ω-automata into parity automata is traditionally done using appearance
    records. We present an efficient variant of this idea, tailored to Rabin automata,
    and several optimizations applicable to all appearance records. We compare the
    methods experimentally and show that our method produces significantly smaller
    automata than previous approaches.
acknowledgement: This work is partially funded by the German Research Foundation (DFG)
  projects Verified Model Checkers (No. 317422601) and Statistical Unbounded Verification
  (No. 383882557), and the Alexander von Humboldt Foundation with funds from the German
  Federal Ministry of Education and Research. It is an extended version of [21], including
  all proofs together with further explanations and examples. Moreover, we provide
  a new, more efficient construction based on (total) preorders, unifying previous
  optimizations. Experiments are performed with a new, performant implementation,
  comparing our approach to the current state of the art.
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Jan
  full_name: Kretinsky, Jan
  id: 44CEF464-F248-11E8-B48F-1D18A9856A87
  last_name: Kretinsky
  orcid: 0000-0002-8122-2881
- first_name: Tobias
  full_name: Meggendorfer, Tobias
  id: b21b0c15-30a2-11eb-80dc-f13ca25802e1
  last_name: Meggendorfer
  orcid: 0000-0002-1712-2165
- first_name: Clara
  full_name: Waldmann, Clara
  last_name: Waldmann
- first_name: Maximilian
  full_name: Weininger, Maximilian
  last_name: Weininger
citation:
  ama: Kretinsky J, Meggendorfer T, Waldmann C, Weininger M. Index appearance record
    with preorders. <i>Acta Informatica</i>. 2022;59:585-618. doi:<a href="https://doi.org/10.1007/s00236-021-00412-y">10.1007/s00236-021-00412-y</a>
  apa: Kretinsky, J., Meggendorfer, T., Waldmann, C., &#38; Weininger, M. (2022).
    Index appearance record with preorders. <i>Acta Informatica</i>. Springer Nature.
    <a href="https://doi.org/10.1007/s00236-021-00412-y">https://doi.org/10.1007/s00236-021-00412-y</a>
  chicago: Kretinsky, Jan, Tobias Meggendorfer, Clara Waldmann, and Maximilian Weininger.
    “Index Appearance Record with Preorders.” <i>Acta Informatica</i>. Springer Nature,
    2022. <a href="https://doi.org/10.1007/s00236-021-00412-y">https://doi.org/10.1007/s00236-021-00412-y</a>.
  ieee: J. Kretinsky, T. Meggendorfer, C. Waldmann, and M. Weininger, “Index appearance
    record with preorders,” <i>Acta Informatica</i>, vol. 59. Springer Nature, pp.
    585–618, 2022.
  ista: Kretinsky J, Meggendorfer T, Waldmann C, Weininger M. 2022. Index appearance
    record with preorders. Acta Informatica. 59, 585–618.
  mla: Kretinsky, Jan, et al. “Index Appearance Record with Preorders.” <i>Acta Informatica</i>,
    vol. 59, Springer Nature, 2022, pp. 585–618, doi:<a href="https://doi.org/10.1007/s00236-021-00412-y">10.1007/s00236-021-00412-y</a>.
  short: J. Kretinsky, T. Meggendorfer, C. Waldmann, M. Weininger, Acta Informatica
    59 (2022) 585–618.
date_created: 2022-01-06T12:37:27Z
date_published: 2022-10-01T00:00:00Z
date_updated: 2023-08-02T13:49:28Z
day: '01'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1007/s00236-021-00412-y
external_id:
  isi:
  - '000735765500001'
file:
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  checksum: bf1c195b6aaf59e8530cf9e3a9d731f7
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  date_updated: 2022-01-07T07:50:31Z
  file_id: '10603'
  file_name: 2021_ActaInfor_Křetínský.pdf
  file_size: 1066082
  relation: main_file
  success: 1
file_date_updated: 2022-01-07T07:50:31Z
has_accepted_license: '1'
intvolume: '        59'
isi: 1
keyword:
- computer networks and communications
- information systems
- software
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 585-618
project:
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
  name: IST Austria Open Access Fund
publication: Acta Informatica
publication_identifier:
  eissn:
  - 1432-0525
  issn:
  - 0001-5903
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Index appearance record with preorders
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 59
year: '2022'
...
---
_id: '11938'
abstract:
- lang: eng
  text: A matching is compatible to two or more labeled point sets of size n with
    labels {1, . . . , n} if its straight-line drawing on each of these point sets
    is crossing-free. We study the maximum number of edges in a matching compatible
    to two or more labeled point sets in general position in the plane. We show that
    for any two labeled sets of n points in convex position there exists a compatible
    matching with ⌊√2n + 1 − 1⌋ edges. More generally, for any ℓ labeled point sets
    we construct compatible matchings of size Ω(n1/ℓ). As a corresponding upper bound,
    we use probabilistic arguments to show that for any ℓ given sets of n points there
    exists a labeling of each set such that the largest compatible matching has O(n2/(ℓ+1))
    edges. Finally, we show that Θ(log n) copies of any set of n points are necessary
    and sufficient for the existence of labelings of these point sets such that any
    compatible matching consists only of a single edge.
acknowledgement: 'A.A. funded by the Marie Sklodowska-Curie grant agreement No 754411.
  Z.M. partially funded by Wittgenstein Prize, Austrian Science Fund (FWF), grant
  no. Z 342-N31. I.P., D.P., and B.V. partially supported by FWF within the collaborative
  DACH project Arrangements and Drawings as FWF project I 3340-N35. A.P. supported
  by a Schrödinger fellowship of the FWF: J-3847-N35. J.T. partially supported by
  ERC Start grant no. (279307: Graph Games), FWF grant no. P23499-N23 and S11407-N23
  (RiSE).'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Oswin
  full_name: Aichholzer, Oswin
  last_name: Aichholzer
- first_name: Alan M
  full_name: Arroyo Guevara, Alan M
  id: 3207FDC6-F248-11E8-B48F-1D18A9856A87
  last_name: Arroyo Guevara
  orcid: 0000-0003-2401-8670
- first_name: Zuzana
  full_name: Masárová, Zuzana
  id: 45CFE238-F248-11E8-B48F-1D18A9856A87
  last_name: Masárová
  orcid: 0000-0002-6660-1322
- first_name: Irene
  full_name: Parada, Irene
  last_name: Parada
- first_name: Daniel
  full_name: Perz, Daniel
  last_name: Perz
- first_name: Alexander
  full_name: Pilz, Alexander
  last_name: Pilz
- first_name: Josef
  full_name: Tkadlec, Josef
  id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87
  last_name: Tkadlec
  orcid: 0000-0002-1097-9684
- first_name: Birgit
  full_name: Vogtenhuber, Birgit
  last_name: Vogtenhuber
citation:
  ama: Aichholzer O, Arroyo Guevara AM, Masárová Z, et al. On compatible matchings.
    <i>Journal of Graph Algorithms and Applications</i>. 2022;26(2):225-240. doi:<a
    href="https://doi.org/10.7155/jgaa.00591">10.7155/jgaa.00591</a>
  apa: Aichholzer, O., Arroyo Guevara, A. M., Masárová, Z., Parada, I., Perz, D.,
    Pilz, A., … Vogtenhuber, B. (2022). On compatible matchings. <i>Journal of Graph
    Algorithms and Applications</i>. Brown University. <a href="https://doi.org/10.7155/jgaa.00591">https://doi.org/10.7155/jgaa.00591</a>
  chicago: Aichholzer, Oswin, Alan M Arroyo Guevara, Zuzana Masárová, Irene Parada,
    Daniel Perz, Alexander Pilz, Josef Tkadlec, and Birgit Vogtenhuber. “On Compatible
    Matchings.” <i>Journal of Graph Algorithms and Applications</i>. Brown University,
    2022. <a href="https://doi.org/10.7155/jgaa.00591">https://doi.org/10.7155/jgaa.00591</a>.
  ieee: O. Aichholzer <i>et al.</i>, “On compatible matchings,” <i>Journal of Graph
    Algorithms and Applications</i>, vol. 26, no. 2. Brown University, pp. 225–240,
    2022.
  ista: Aichholzer O, Arroyo Guevara AM, Masárová Z, Parada I, Perz D, Pilz A, Tkadlec
    J, Vogtenhuber B. 2022. On compatible matchings. Journal of Graph Algorithms and
    Applications. 26(2), 225–240.
  mla: Aichholzer, Oswin, et al. “On Compatible Matchings.” <i>Journal of Graph Algorithms
    and Applications</i>, vol. 26, no. 2, Brown University, 2022, pp. 225–40, doi:<a
    href="https://doi.org/10.7155/jgaa.00591">10.7155/jgaa.00591</a>.
  short: O. Aichholzer, A.M. Arroyo Guevara, Z. Masárová, I. Parada, D. Perz, A. Pilz,
    J. Tkadlec, B. Vogtenhuber, Journal of Graph Algorithms and Applications 26 (2022)
    225–240.
date_created: 2022-08-21T22:01:56Z
date_published: 2022-06-01T00:00:00Z
date_updated: 2023-02-23T13:54:21Z
day: '01'
ddc:
- '000'
department:
- _id: UlWa
- _id: HeEd
- _id: KrCh
doi: 10.7155/jgaa.00591
ec_funded: 1
external_id:
  arxiv:
  - '2101.03928'
file:
- access_level: open_access
  checksum: dc6e255e3558faff924fd9e370886c11
  content_type: application/pdf
  creator: dernst
  date_created: 2022-08-22T06:42:42Z
  date_updated: 2022-08-22T06:42:42Z
  file_id: '11940'
  file_name: 2022_JourGraphAlgorithmsApplic_Aichholzer.pdf
  file_size: 694538
  relation: main_file
  success: 1
file_date_updated: 2022-08-22T06:42:42Z
has_accepted_license: '1'
intvolume: '        26'
issue: '2'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 225-240
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: 268116B8-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z00342
  name: The Wittgenstein Prize
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '279307'
  name: 'Quantitative Graph Games: Theory and Applications'
- _id: 2584A770-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: P 23499-N23
  name: Modern Graph Algorithmic Techniques in Formal Verification
- _id: 25863FF4-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: S11407
  name: Game Theory
publication: Journal of Graph Algorithms and Applications
publication_identifier:
  issn:
  - 1526-1719
publication_status: published
publisher: Brown University
quality_controlled: '1'
related_material:
  record:
  - id: '9296'
    relation: earlier_version
    status: public
scopus_import: '1'
status: public
title: On compatible matchings
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 26
year: '2022'
...
---
_id: '12000'
abstract:
- lang: eng
  text: "We consider the quantitative problem of obtaining lower-bounds on the probability
    of termination of a given non-deterministic probabilistic program. Specifically,
    given a non-termination threshold p∈[0,1], we aim for certificates proving that
    the program terminates with probability at least 1−p. The basic idea of our approach
    is to find a terminating stochastic invariant, i.e. a subset SI of program states
    such that (i) the probability of the program ever leaving SI is no more than p,
    and (ii) almost-surely, the program either leaves SI or terminates.\r\n\r\nWhile
    stochastic invariants are already well-known, we provide the first proof that
    the idea above is not only sound, but also complete for quantitative termination
    analysis. We then introduce a novel sound and complete characterization of stochastic
    invariants that enables template-based approaches for easy synthesis of quantitative
    termination certificates, especially in affine or polynomial forms. Finally, by
    combining this idea with the existing martingale-based methods that are relatively
    complete for qualitative termination analysis, we obtain the first automated,
    sound, and relatively complete algorithm for quantitative termination analysis.
    Notably, our completeness guarantees for quantitative termination analysis are
    as strong as the best-known methods for the qualitative variant.\r\n\r\nOur prototype
    implementation demonstrates the effectiveness of our approach on various probabilistic
    programs. We also demonstrate that our algorithm certifies lower bounds on termination
    probability for probabilistic programs that are beyond the reach of previous methods."
acknowledgement: This research was partially supported by the ERC CoG 863818 (ForM-SMArt),
  the HKUST-Kaisa Joint Research Institute Project Grant HKJRI3A-055, the HKUST Startup
  Grant R9272 and the European Union’s Horizon 2020 research and innovation programme
  under the Marie Skłodowska-Curie Grant Agreement No. 665385.
alternative_title:
- LNCS
article_processing_charge: Yes (in subscription journal)
author:
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Amir Kafshdar
  full_name: Goharshady, Amir Kafshdar
  id: 391365CE-F248-11E8-B48F-1D18A9856A87
  last_name: Goharshady
  orcid: 0000-0003-1702-6584
- first_name: Tobias
  full_name: Meggendorfer, Tobias
  id: b21b0c15-30a2-11eb-80dc-f13ca25802e1
  last_name: Meggendorfer
  orcid: 0000-0002-1712-2165
- first_name: Dorde
  full_name: Zikelic, Dorde
  id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
  last_name: Zikelic
  orcid: 0000-0002-4681-1699
citation:
  ama: 'Chatterjee K, Goharshady AK, Meggendorfer T, Zikelic D. Sound and complete
    certificates for auantitative termination analysis of probabilistic programs.
    In: <i>Proceedings of the 34th International Conference on Computer Aided Verification</i>.
    Vol 13371. Springer; 2022:55-78. doi:<a href="https://doi.org/10.1007/978-3-031-13185-1_4">10.1007/978-3-031-13185-1_4</a>'
  apa: 'Chatterjee, K., Goharshady, A. K., Meggendorfer, T., &#38; Zikelic, D. (2022).
    Sound and complete certificates for auantitative termination analysis of probabilistic
    programs. In <i>Proceedings of the 34th International Conference on Computer Aided
    Verification</i> (Vol. 13371, pp. 55–78). Haifa, Israel: Springer. <a href="https://doi.org/10.1007/978-3-031-13185-1_4">https://doi.org/10.1007/978-3-031-13185-1_4</a>'
  chicago: Chatterjee, Krishnendu, Amir Kafshdar Goharshady, Tobias Meggendorfer,
    and Dorde Zikelic. “Sound and Complete Certificates for Auantitative Termination
    Analysis of Probabilistic Programs.” In <i>Proceedings of the 34th International
    Conference on Computer Aided Verification</i>, 13371:55–78. Springer, 2022. <a
    href="https://doi.org/10.1007/978-3-031-13185-1_4">https://doi.org/10.1007/978-3-031-13185-1_4</a>.
  ieee: K. Chatterjee, A. K. Goharshady, T. Meggendorfer, and D. Zikelic, “Sound and complete
    certificates for auantitative termination analysis of probabilistic programs,”
    in <i>Proceedings of the 34th International Conference on Computer Aided Verification</i>,
    Haifa, Israel, 2022, vol. 13371, pp. 55–78.
  ista: 'Chatterjee K, Goharshady AK, Meggendorfer T, Zikelic D. 2022. Sound and complete
    certificates for auantitative termination analysis of probabilistic programs.
    Proceedings of the 34th International Conference on Computer Aided Verification.
    CAV: Computer Aided Verification, LNCS, vol. 13371, 55–78.'
  mla: Chatterjee, Krishnendu, et al. “Sound and Complete Certificates for Auantitative
    Termination Analysis of Probabilistic Programs.” <i>Proceedings of the 34th International
    Conference on Computer Aided Verification</i>, vol. 13371, Springer, 2022, pp.
    55–78, doi:<a href="https://doi.org/10.1007/978-3-031-13185-1_4">10.1007/978-3-031-13185-1_4</a>.
  short: K. Chatterjee, A.K. Goharshady, T. Meggendorfer, D. Zikelic, in:, Proceedings
    of the 34th International Conference on Computer Aided Verification, Springer,
    2022, pp. 55–78.
conference:
  end_date: 2022-08-10
  location: Haifa, Israel
  name: 'CAV: Computer Aided Verification'
  start_date: 2022-08-07
date_created: 2022-08-28T22:02:02Z
date_published: 2022-08-07T00:00:00Z
date_updated: 2025-07-14T09:09:58Z
day: '07'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1007/978-3-031-13185-1_4
ec_funded: 1
external_id:
  isi:
  - '000870304500004'
file:
- access_level: open_access
  checksum: 24e0f810ec52735a90ade95198bc641d
  content_type: application/pdf
  creator: alisjak
  date_created: 2022-08-29T09:17:01Z
  date_updated: 2022-08-29T09:17:01Z
  file_id: '12003'
  file_name: 2022_LNCS_Chatterjee.pdf
  file_size: 505094
  relation: main_file
  success: 1
file_date_updated: 2022-08-29T09:17:01Z
has_accepted_license: '1'
intvolume: '     13371'
isi: 1
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: 55-78
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: Proceedings of the 34th International Conference on Computer Aided Verification
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783031131844'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer
quality_controlled: '1'
related_material:
  record:
  - id: '14539'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Sound and complete certificates for auantitative termination analysis of probabilistic
  programs
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 13371
year: '2022'
...
---
_id: '12101'
abstract:
- lang: eng
  text: 'Spatial games form a widely-studied class of games from biology and physics
    modeling the evolution of social behavior. Formally, such a game is defined by
    a square (d by d) payoff matrix M and an undirected graph G. Each vertex of G
    represents an individual, that initially follows some strategy i ∈ {1,2,…,d}.
    In each round of the game, every individual plays the matrix game with each of
    its neighbors: An individual following strategy i meeting a neighbor following
    strategy j receives a payoff equal to the entry (i,j) of M. Then, each individual
    updates its strategy to its neighbors'' strategy with the highest sum of payoffs,
    and the next round starts. The basic computational problems consist of reachability
    between configurations and the average frequency of a strategy. For general spatial
    games and graphs, these problems are in PSPACE. In this paper, we examine restricted
    setting: the game is a prisoner’s dilemma; and G is a subgraph of grid. We prove
    that basic computational problems for spatial games with prisoner’s dilemma on
    a subgraph of a grid are PSPACE-hard.'
acknowledgement: "Krishnendu Chatterjee: The research was partially supported by the
  ERC CoG 863818\r\n(ForM-SMArt).\r\nIsmaël Jecker: The research was partially supported
  by the ERC grant 950398 (INFSYS).\r\nJakub Svoboda: The research was partially supported
  by the ERC CoG 863818 (ForM-SMArt)"
article_number: 11:1-11:14
article_processing_charge: No
author:
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Rasmus
  full_name: Ibsen-Jensen, Rasmus
  id: 3B699956-F248-11E8-B48F-1D18A9856A87
  last_name: Ibsen-Jensen
  orcid: 0000-0003-4783-0389
- first_name: Ismael R
  full_name: Jecker, Ismael R
  id: 85D7C63E-7D5D-11E9-9C0F-98C4E5697425
  last_name: Jecker
- first_name: Jakub
  full_name: Svoboda, Jakub
  id: 130759D2-D7DD-11E9-87D2-DE0DE6697425
  last_name: Svoboda
  orcid: 0000-0002-1419-3267
citation:
  ama: 'Chatterjee K, Ibsen-Jensen R, Jecker IR, Svoboda J. Complexity of spatial
    games. In: <i>42nd IARCS Annual Conference on Foundations of Software Technology
    and Theoretical Computer Science</i>. Vol 250. Schloss Dagstuhl - Leibniz-Zentrum
    für Informatik; 2022. doi:<a href="https://doi.org/10.4230/LIPIcs.FSTTCS.2022.11">10.4230/LIPIcs.FSTTCS.2022.11</a>'
  apa: 'Chatterjee, K., Ibsen-Jensen, R., Jecker, I. R., &#38; Svoboda, J. (2022).
    Complexity of spatial games. In <i>42nd IARCS Annual Conference on Foundations
    of Software Technology and Theoretical Computer Science</i> (Vol. 250). Madras,
    India: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. <a href="https://doi.org/10.4230/LIPIcs.FSTTCS.2022.11">https://doi.org/10.4230/LIPIcs.FSTTCS.2022.11</a>'
  chicago: Chatterjee, Krishnendu, Rasmus Ibsen-Jensen, Ismael R Jecker, and Jakub
    Svoboda. “Complexity of Spatial Games.” In <i>42nd IARCS Annual Conference on
    Foundations of Software Technology and Theoretical Computer Science</i>, Vol.
    250. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2022. <a href="https://doi.org/10.4230/LIPIcs.FSTTCS.2022.11">https://doi.org/10.4230/LIPIcs.FSTTCS.2022.11</a>.
  ieee: K. Chatterjee, R. Ibsen-Jensen, I. R. Jecker, and J. Svoboda, “Complexity
    of spatial games,” in <i>42nd IARCS Annual Conference on Foundations of Software
    Technology and Theoretical Computer Science</i>, Madras, India, 2022, vol. 250.
  ista: 'Chatterjee K, Ibsen-Jensen R, Jecker IR, Svoboda J. 2022. Complexity of spatial
    games. 42nd IARCS Annual Conference on Foundations of Software Technology and
    Theoretical Computer Science. FSTTC: Foundations of Software Technology and Theoretical
    Computer Science vol. 250, 11:1-11:14.'
  mla: Chatterjee, Krishnendu, et al. “Complexity of Spatial Games.” <i>42nd IARCS
    Annual Conference on Foundations of Software Technology and Theoretical Computer
    Science</i>, vol. 250, 11:1-11:14, Schloss Dagstuhl - Leibniz-Zentrum für Informatik,
    2022, doi:<a href="https://doi.org/10.4230/LIPIcs.FSTTCS.2022.11">10.4230/LIPIcs.FSTTCS.2022.11</a>.
  short: K. Chatterjee, R. Ibsen-Jensen, I.R. Jecker, J. Svoboda, in:, 42nd IARCS
    Annual Conference on Foundations of Software Technology and Theoretical Computer
    Science, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2022.
conference:
  end_date: 2022-12-20
  location: Madras, India
  name: 'FSTTC: Foundations of Software Technology and Theoretical Computer Science'
  start_date: 2022-12-18
date_created: 2023-01-01T23:00:50Z
date_published: 2022-12-14T00:00:00Z
date_updated: 2025-07-14T09:09:55Z
day: '14'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.4230/LIPIcs.FSTTCS.2022.11
ec_funded: 1
file:
- access_level: open_access
  checksum: a21e3ba2421e2c4a06aa2cb6d530ede1
  content_type: application/pdf
  creator: dernst
  date_created: 2023-01-20T10:19:19Z
  date_updated: 2023-01-20T10:19:19Z
  file_id: '12323'
  file_name: 2022_LIPICs_Chatterjee.pdf
  file_size: 657396
  relation: main_file
  success: 1
file_date_updated: 2023-01-20T10:19:19Z
has_accepted_license: '1'
intvolume: '       250'
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication: 42nd IARCS Annual Conference on Foundations of Software Technology and
  Theoretical Computer Science
publication_identifier:
  isbn:
  - '9783959772617'
  issn:
  - 1868-8969
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
scopus_import: '1'
status: public
title: Complexity of spatial games
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 250
year: '2022'
...
