---
_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
corr_author: '1'
date_created: 2022-06-21T09:26:15Z
date_published: 2022-06-09T00:00:00Z
date_updated: 2025-04-14T07:52:47Z
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:
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  short: CC BY-NC-ND (4.0)
type: conference
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
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.
corr_author: '1'
date_created: 2022-08-21T22:01:56Z
date_published: 2022-06-01T00:00:00Z
date_updated: 2026-04-16T09:18:20Z
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: Mathematics, Computer Science
- _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: 2026-04-07T13:27:55Z
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. FSTTCS: 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: 'FSTTCS: Foundations of Software Technology and Theoretical Computer Science'
  start_date: 2022-12-18
corr_author: '1'
date_created: 2023-01-01T23:00:50Z
date_published: 2022-12-14T00:00:00Z
date_updated: 2026-04-07T11:49:11Z
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'
related_material:
  record:
  - id: '20138'
    relation: dissertation_contains
    status: public
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'
...
---
_id: '12102'
abstract:
- lang: eng
  text: 'Given a Markov chain M = (V, v_0, δ), with state space V and a starting state
    v_0, and a probability threshold ε, an ε-core is a subset C of states that is
    left with probability at most ε. More formally, C ⊆ V is an ε-core, iff ℙ[reach
    (V\C)] ≤ ε. Cores have been applied in a wide variety of verification problems
    over Markov chains, Markov decision processes, and probabilistic programs, as
    a means of discarding uninteresting and low-probability parts of a probabilistic
    system and instead being able to focus on the states that are likely to be encountered
    in a real-world run. In this work, we focus on the problem of computing a minimal
    ε-core in a Markov chain. Our contributions include both negative and positive
    results: (i) We show that the decision problem on the existence of an ε-core of
    a given size is NP-complete. This solves an open problem posed in [Jan Kretínský
    and Tobias Meggendorfer, 2020]. We additionally show that the problem remains
    NP-complete even when limited to acyclic Markov chains with bounded maximal vertex
    degree; (ii) We provide a polynomial time algorithm for computing a minimal ε-core
    on Markov chains over control-flow graphs of structured programs. A straightforward
    combination of our algorithm with standard branch prediction techniques allows
    one to apply the idea of cores to find a subset of program lines that are left
    with low probability and then focus any desired static analysis on this core subset.'
acknowledgement: "The research was partially supported by the Hong Kong Research Grants
  Council ECS\r\nProject No. 26208122, ERC CoG 863818 (FoRM-SMArt), the European Union’s
  Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie
  Grant Agreement No. 665385, HKUST– Kaisa Joint Research Institute Project Grant
  HKJRI3A-055 and HKUST Startup Grant R9272. Ali Ahmadi and Roodabeh Safavi were interns
  at HKUST."
article_number: '29'
article_processing_charge: No
author:
- first_name: Ali
  full_name: Ahmadi, Ali
  last_name: Ahmadi
- 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: Roodabeh
  full_name: Safavi Hemami, Roodabeh
  id: 72ed2640-8972-11ed-ae7b-f9c81ec75154
  last_name: Safavi Hemami
- first_name: Dorde
  full_name: Zikelic, Dorde
  id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
  last_name: Zikelic
  orcid: 0000-0002-4681-1699
citation:
  ama: 'Ahmadi A, Chatterjee K, Goharshady AK, Meggendorfer T, Safavi Hemami R, Zikelic
    D. Algorithms and hardness results for computing cores of Markov chains. 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.2022.29">10.4230/LIPIcs.FSTTCS.2022.29</a>'
  apa: 'Ahmadi, A., Chatterjee, K., Goharshady, A. K., Meggendorfer, T., Safavi Hemami,
    R., &#38; Zikelic, D. (2022). Algorithms and hardness results for computing cores
    of Markov chains. 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.2022.29">https://doi.org/10.4230/LIPIcs.FSTTCS.2022.29</a>'
  chicago: Ahmadi, Ali, Krishnendu Chatterjee, Amir Kafshdar Goharshady, Tobias Meggendorfer,
    Roodabeh Safavi Hemami, and Dorde Zikelic. “Algorithms and Hardness Results for
    Computing Cores of Markov Chains.” 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.2022.29">https://doi.org/10.4230/LIPIcs.FSTTCS.2022.29</a>.
  ieee: A. Ahmadi, K. Chatterjee, A. K. Goharshady, T. Meggendorfer, R. Safavi Hemami,
    and D. Zikelic, “Algorithms and hardness results for computing cores of Markov
    chains,” in <i>42nd IARCS Annual Conference on Foundations of Software Technology
    and Theoretical Computer Science</i>, Madras, India, 2022, vol. 250.
  ista: 'Ahmadi A, Chatterjee K, Goharshady AK, Meggendorfer T, Safavi Hemami R, Zikelic
    D. 2022. Algorithms and hardness results for computing cores of Markov chains.
    42nd IARCS Annual Conference on Foundations of Software Technology and Theoretical
    Computer Science. FSTTCS: Foundations of Software Technology and Theoretical Computer
    Science vol. 250, 29.'
  mla: Ahmadi, Ali, et al. “Algorithms and Hardness Results for Computing Cores of
    Markov Chains.” <i>42nd IARCS Annual Conference on Foundations of Software Technology
    and Theoretical Computer Science</i>, vol. 250, 29, Schloss Dagstuhl - Leibniz-Zentrum
    für Informatik, 2022, doi:<a href="https://doi.org/10.4230/LIPIcs.FSTTCS.2022.29">10.4230/LIPIcs.FSTTCS.2022.29</a>.
  short: A. Ahmadi, K. Chatterjee, A.K. Goharshady, T. Meggendorfer, R. Safavi Hemami,
    D. Zikelic, 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: 'FSTTCS: Foundations of Software Technology and Theoretical Computer Science'
  start_date: 2022-12-18
corr_author: '1'
date_created: 2023-01-01T23:00:50Z
date_published: 2022-12-14T00:00:00Z
date_updated: 2025-07-10T11:50:23Z
day: '14'
ddc:
- '000'
department:
- _id: KrCh
- _id: GradSch
doi: 10.4230/LIPIcs.FSTTCS.2022.29
ec_funded: 1
file:
- access_level: open_access
  checksum: 6660c802489013f034c9e8bd57f4d46e
  content_type: application/pdf
  creator: dernst
  date_created: 2023-01-20T10:39:44Z
  date_updated: 2023-01-20T10:39:44Z
  file_id: '12324'
  file_name: 2022_LIPICs_Ahmadi.pdf
  file_size: 872534
  relation: main_file
  success: 1
file_date_updated: 2023-01-20T10:39:44Z
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'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
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: Algorithms and hardness results for computing cores of Markov chains
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'
...
---
_id: '12170'
abstract:
- lang: eng
  text: We present PET, a specialized and highly optimized framework for partial exploration
    on probabilistic systems. Over the last decade, several significant advances in
    the analysis of Markov decision processes employed partial exploration. In a nutshell,
    this idea allows to focus computation on specific parts of the system, guided
    by heuristics, while maintaining correctness. In particular, only relevant parts
    of the system are constructed on demand, which in turn potentially allows to omit
    constructing large parts of the system. Depending on the model, this leads to
    dramatic speed-ups, in extreme cases even up to an arbitrary factor. PET unifies
    several previous implementations and provides a flexible framework to easily implement
    partial exploration for many further problems. Our experimental evaluation shows
    significant improvements compared to the previous implementations while vastly
    reducing the overhead required to add support for additional properties.
acknowledgement: We thank Pranav Ashok and Maximilian Weininger for their contributions
  to spiritual predecessors of PET as well as motivating the initial development of
  this tool.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Tobias
  full_name: Meggendorfer, Tobias
  id: b21b0c15-30a2-11eb-80dc-f13ca25802e1
  last_name: Meggendorfer
  orcid: 0000-0002-1712-2165
citation:
  ama: 'Meggendorfer T. PET – A partial exploration tool for probabilistic verification.
    In: <i>20th International Symposium on Automated Technology for Verification and
    Analysis</i>. Vol 13505. Springer Nature; 2022:320-326. doi:<a href="https://doi.org/10.1007/978-3-031-19992-9_20">10.1007/978-3-031-19992-9_20</a>'
  apa: 'Meggendorfer, T. (2022). PET – A partial exploration tool for probabilistic
    verification. In <i>20th International Symposium on Automated Technology for Verification
    and Analysis</i> (Vol. 13505, pp. 320–326). Virtual: Springer Nature. <a href="https://doi.org/10.1007/978-3-031-19992-9_20">https://doi.org/10.1007/978-3-031-19992-9_20</a>'
  chicago: Meggendorfer, Tobias. “PET – A Partial Exploration Tool for Probabilistic
    Verification.” In <i>20th International Symposium on Automated Technology for
    Verification and Analysis</i>, 13505:320–26. Springer Nature, 2022. <a href="https://doi.org/10.1007/978-3-031-19992-9_20">https://doi.org/10.1007/978-3-031-19992-9_20</a>.
  ieee: T. Meggendorfer, “PET – A partial exploration tool for probabilistic verification,”
    in <i>20th International Symposium on Automated Technology for Verification and
    Analysis</i>, Virtual, 2022, vol. 13505, pp. 320–326.
  ista: 'Meggendorfer T. 2022. PET – A partial exploration tool for probabilistic
    verification. 20th International Symposium on Automated Technology for Verification
    and Analysis. ATVA: Automated Technology for Verification and Analysis, LNCS,
    vol. 13505, 320–326.'
  mla: Meggendorfer, Tobias. “PET – A Partial Exploration Tool for Probabilistic Verification.”
    <i>20th International Symposium on Automated Technology for Verification and Analysis</i>,
    vol. 13505, Springer Nature, 2022, pp. 320–26, doi:<a href="https://doi.org/10.1007/978-3-031-19992-9_20">10.1007/978-3-031-19992-9_20</a>.
  short: T. Meggendorfer, in:, 20th International Symposium on Automated Technology
    for Verification and Analysis, Springer Nature, 2022, pp. 320–326.
conference:
  end_date: 2022-10-28
  location: Virtual
  name: 'ATVA: Automated Technology for Verification and Analysis'
  start_date: 2022-10-25
corr_author: '1'
date_created: 2023-01-12T12:11:07Z
date_published: 2022-10-21T00:00:00Z
date_updated: 2025-09-10T09:49:29Z
day: '21'
department:
- _id: KrCh
doi: 10.1007/978-3-031-19992-9_20
external_id:
  isi:
  - '001456146500020'
intvolume: '     13505'
isi: 1
language:
- iso: eng
month: '10'
oa_version: None
page: 320-326
publication: 20th International Symposium on Automated Technology for Verification
  and Analysis
publication_identifier:
  eisbn:
  - '9783031199929'
  eissn:
  - 1611-3349
  isbn:
  - '9783031199912'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: PET – A partial exploration tool for probabilistic verification
type: conference
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 13505
year: '2022'
...
---
_id: '12257'
abstract:
- lang: eng
  text: Structural balance theory is an established framework for studying social
    relationships of friendship and enmity. These relationships are modeled by a signed
    network whose energy potential measures the level of imbalance, while stochastic
    dynamics drives the network toward a state of minimum energy that captures social
    balance. It is known that this energy landscape has local minima that can trap
    socially aware dynamics, preventing it from reaching balance. Here we first study
    the robustness and attractor properties of these local minima. We show that a
    stochastic process can reach them from an abundance of initial states and that
    some local minima cannot be escaped by mild perturbations of the network. Motivated
    by these anomalies, we introduce best-edge dynamics (BED), a new plausible stochastic
    process. We prove that BED always reaches balance and that it does so fast in
    various interesting settings.
acknowledgement: "K.C. acknowledges support from ERC Start Grant No. (279307: Graph
  Games), ERC Consolidator Grant No. (863818: ForM-SMart), and Austrian Science Fund
  (FWF)\r\nGrants No. P23499-N23 and No. S11407-N23 (RiSE). This project has received
  funding from the European Union’s Horizon 2020 research and innovation programme
  under the Marie\r\nSkłodowska-Curie Grant Agreement No. 665385."
article_number: '034321'
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: Jakub
  full_name: Svoboda, Jakub
  id: 130759D2-D7DD-11E9-87D2-DE0DE6697425
  last_name: Svoboda
  orcid: 0000-0002-1419-3267
- first_name: Dorde
  full_name: Zikelic, Dorde
  id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
  last_name: Zikelic
  orcid: 0000-0002-4681-1699
- first_name: Andreas
  full_name: Pavlogiannis, Andreas
  id: 49704004-F248-11E8-B48F-1D18A9856A87
  last_name: Pavlogiannis
  orcid: 0000-0002-8943-0722
- first_name: Josef
  full_name: Tkadlec, Josef
  id: 3F24CCC8-F248-11E8-B48F-1D18A9856A87
  last_name: Tkadlec
  orcid: 0000-0002-1097-9684
citation:
  ama: 'Chatterjee K, Svoboda J, Zikelic D, Pavlogiannis A, Tkadlec J. Social balance
    on networks: Local minima and best-edge dynamics. <i>Physical Review E</i>. 2022;106(3).
    doi:<a href="https://doi.org/10.1103/physreve.106.034321">10.1103/physreve.106.034321</a>'
  apa: 'Chatterjee, K., Svoboda, J., Zikelic, D., Pavlogiannis, A., &#38; Tkadlec,
    J. (2022). Social balance on networks: Local minima and best-edge dynamics. <i>Physical
    Review E</i>. American Physical Society. <a href="https://doi.org/10.1103/physreve.106.034321">https://doi.org/10.1103/physreve.106.034321</a>'
  chicago: 'Chatterjee, Krishnendu, Jakub Svoboda, Dorde Zikelic, Andreas Pavlogiannis,
    and Josef Tkadlec. “Social Balance on Networks: Local Minima and Best-Edge Dynamics.”
    <i>Physical Review E</i>. American Physical Society, 2022. <a href="https://doi.org/10.1103/physreve.106.034321">https://doi.org/10.1103/physreve.106.034321</a>.'
  ieee: 'K. Chatterjee, J. Svoboda, D. Zikelic, A. Pavlogiannis, and J. Tkadlec, “Social
    balance on networks: Local minima and best-edge dynamics,” <i>Physical Review
    E</i>, vol. 106, no. 3. American Physical Society, 2022.'
  ista: 'Chatterjee K, Svoboda J, Zikelic D, Pavlogiannis A, Tkadlec J. 2022. Social
    balance on networks: Local minima and best-edge dynamics. Physical Review E. 106(3),
    034321.'
  mla: 'Chatterjee, Krishnendu, et al. “Social Balance on Networks: Local Minima and
    Best-Edge Dynamics.” <i>Physical Review E</i>, vol. 106, no. 3, 034321, American
    Physical Society, 2022, doi:<a href="https://doi.org/10.1103/physreve.106.034321">10.1103/physreve.106.034321</a>.'
  short: K. Chatterjee, J. Svoboda, D. Zikelic, A. Pavlogiannis, J. Tkadlec, Physical
    Review E 106 (2022).
date_created: 2023-01-16T09:57:57Z
date_published: 2022-09-29T00:00:00Z
date_updated: 2026-04-07T11:49:11Z
day: '29'
department:
- _id: KrCh
doi: 10.1103/physreve.106.034321
ec_funded: 1
external_id:
  arxiv:
  - '2210.02394'
  isi:
  - '000870243100001'
intvolume: '       106'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2210.02394
month: '09'
oa: 1
oa_version: Preprint
project:
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
  call_identifier: FP7
  grant_number: '279307'
  name: 'Quantitative Graph Games: Theory and Applications'
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms 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
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: Physical Review E
publication_identifier:
  eissn:
  - 2470-0053
  issn:
  - 2470-0045
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
  record:
  - id: '20138'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: 'Social balance on networks: Local minima and best-edge dynamics'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 106
year: '2022'
...
---
_id: '12280'
abstract:
- lang: eng
  text: 'In repeated interactions, players can use strategies that respond to the
    outcome of previous rounds. Much of the existing literature on direct reciprocity
    assumes that all competing individuals use the same strategy space. Here, we study
    both learning and evolutionary dynamics of players that differ in the strategy
    space they explore. We focus on the infinitely repeated donation game and compare
    three natural strategy spaces: memory-1 strategies, which consider the last moves
    of both players, reactive strategies, which respond to the last move of the co-player,
    and unconditional strategies. These three strategy spaces differ in the memory
    capacity that is needed. We compute the long term average payoff that is achieved
    in a pairwise learning process. We find that smaller strategy spaces can dominate
    larger ones. For weak selection, unconditional players dominate both reactive
    and memory-1 players. For intermediate selection, reactive players dominate memory-1
    players. Only for strong selection and low cost-to-benefit ratio, memory-1 players
    dominate the others. We observe that the supergame between strategy spaces can
    be a social dilemma: maximum payoff is achieved if both players explore a larger
    strategy space, but smaller strategy spaces dominate.'
acknowledgement: "This work was supported by the European Research Council (https://erc.europa.eu/)\r\nCoG
  863818 (ForM-SMArt) (to K.C.), and the European Research Council Starting Grant
  850529: E-DIRECT (to C.H.). The funders had no role in study design, data collection
  and analysis, decision to publish, or preparation of the manuscript."
article_number: e1010149
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: 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
- first_name: Martin
  full_name: Nowak, Martin
  last_name: Nowak
citation:
  ama: Schmid L, Hilbe C, Chatterjee K, Nowak M. Direct reciprocity between individuals
    that use different strategy spaces. <i>PLOS Computational Biology</i>. 2022;18(6).
    doi:<a href="https://doi.org/10.1371/journal.pcbi.1010149">10.1371/journal.pcbi.1010149</a>
  apa: Schmid, L., Hilbe, C., Chatterjee, K., &#38; Nowak, M. (2022). Direct reciprocity
    between individuals that use different strategy spaces. <i>PLOS Computational
    Biology</i>. Public Library of Science. <a href="https://doi.org/10.1371/journal.pcbi.1010149">https://doi.org/10.1371/journal.pcbi.1010149</a>
  chicago: Schmid, Laura, Christian Hilbe, Krishnendu Chatterjee, and Martin Nowak.
    “Direct Reciprocity between Individuals That Use Different Strategy Spaces.” <i>PLOS
    Computational Biology</i>. Public Library of Science, 2022. <a href="https://doi.org/10.1371/journal.pcbi.1010149">https://doi.org/10.1371/journal.pcbi.1010149</a>.
  ieee: L. Schmid, C. Hilbe, K. Chatterjee, and M. Nowak, “Direct reciprocity between
    individuals that use different strategy spaces,” <i>PLOS Computational Biology</i>,
    vol. 18, no. 6. Public Library of Science, 2022.
  ista: Schmid L, Hilbe C, Chatterjee K, Nowak M. 2022. Direct reciprocity between
    individuals that use different strategy spaces. PLOS Computational Biology. 18(6),
    e1010149.
  mla: Schmid, Laura, et al. “Direct Reciprocity between Individuals That Use Different
    Strategy Spaces.” <i>PLOS Computational Biology</i>, vol. 18, no. 6, e1010149,
    Public Library of Science, 2022, doi:<a href="https://doi.org/10.1371/journal.pcbi.1010149">10.1371/journal.pcbi.1010149</a>.
  short: L. Schmid, C. Hilbe, K. Chatterjee, M. Nowak, PLOS Computational Biology
    18 (2022).
corr_author: '1'
date_created: 2023-01-16T10:02:51Z
date_published: 2022-06-14T00:00:00Z
date_updated: 2025-04-14T07:52:47Z
day: '14'
ddc:
- '000'
- '570'
department:
- _id: KrCh
doi: 10.1371/journal.pcbi.1010149
ec_funded: 1
external_id:
  isi:
  - '000843626800031'
  pmid:
  - '35700167'
file:
- access_level: open_access
  checksum: 31b6b311b6731f1658277a9dfff6632c
  content_type: application/pdf
  creator: dernst
  date_created: 2023-01-30T11:28:13Z
  date_updated: 2023-01-30T11:28:13Z
  file_id: '12460'
  file_name: 2022_PlosCompBio_Schmid.pdf
  file_size: 3143222
  relation: main_file
  success: 1
file_date_updated: 2023-01-30T11:28:13Z
has_accepted_license: '1'
intvolume: '        18'
isi: 1
issue: '6'
keyword:
- Computational Theory and Mathematics
- Cellular and Molecular Neuroscience
- Genetics
- Molecular Biology
- Ecology
- Modeling and Simulation
- Ecology
- Evolution
- Behavior and Systematics
language:
- iso: eng
month: '06'
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'
publication: PLOS Computational Biology
publication_identifier:
  eissn:
  - 1553-7358
publication_status: published
publisher: Public Library of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: Direct reciprocity between individuals that use different strategy spaces
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: 18
year: '2022'
...
---
_id: '12511'
abstract:
- lang: eng
  text: "We consider the problem of formally verifying almost-sure (a.s.) asymptotic
    stability in discrete-time nonlinear stochastic control systems. While verifying
    stability in deterministic control systems is extensively studied in the literature,
    verifying stability in stochastic control systems is an open problem. The few
    existing works on this topic either consider only specialized forms of stochasticity
    or make restrictive assumptions on the system, rendering them inapplicable to
    learning algorithms with neural network policies. \r\n In this work, we present
    an approach for general nonlinear stochastic control problems with two novel aspects:
    (a) instead of classical stochastic extensions of Lyapunov functions, we use ranking
    supermartingales (RSMs) to certify a.s. asymptotic stability, and (b) we present
    a method for learning neural network RSMs. \r\n We prove that our approach guarantees
    a.s. asymptotic stability of the system and\r\n provides the first method to obtain
    bounds on the stabilization time, which stochastic Lyapunov functions do not.\r\n
    Finally, we validate our approach experimentally on a set of nonlinear stochastic
    reinforcement learning environments with neural network policies."
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\r\nunder the Marie Skłodowska-Curie Grant Agreement No. 665385."
article_processing_charge: No
article_type: original
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
citation:
  ama: Lechner M, Zikelic D, Chatterjee K, Henzinger TA. Stability verification in
    stochastic control systems via neural network supermartingales. <i>Proceedings
    of the AAAI Conference on Artificial Intelligence</i>. 2022;36(7):7326-7336. doi:<a
    href="https://doi.org/10.1609/aaai.v36i7.20695">10.1609/aaai.v36i7.20695</a>
  apa: Lechner, M., Zikelic, D., Chatterjee, K., &#38; Henzinger, T. A. (2022). Stability
    verification in stochastic control systems via neural network supermartingales.
    <i>Proceedings of the AAAI Conference on Artificial Intelligence</i>. Association
    for the Advancement of Artificial Intelligence. <a href="https://doi.org/10.1609/aaai.v36i7.20695">https://doi.org/10.1609/aaai.v36i7.20695</a>
  chicago: Lechner, Mathias, Dorde Zikelic, Krishnendu Chatterjee, and Thomas A Henzinger.
    “Stability Verification in Stochastic Control Systems via Neural Network Supermartingales.”
    <i>Proceedings of the AAAI Conference on Artificial Intelligence</i>. Association
    for the Advancement of Artificial Intelligence, 2022. <a href="https://doi.org/10.1609/aaai.v36i7.20695">https://doi.org/10.1609/aaai.v36i7.20695</a>.
  ieee: M. Lechner, D. Zikelic, K. Chatterjee, and T. A. Henzinger, “Stability verification
    in stochastic control systems via neural network supermartingales,” <i>Proceedings
    of the AAAI Conference on Artificial Intelligence</i>, vol. 36, no. 7. Association
    for the Advancement of Artificial Intelligence, pp. 7326–7336, 2022.
  ista: Lechner M, Zikelic D, Chatterjee K, Henzinger TA. 2022. Stability verification
    in stochastic control systems via neural network supermartingales. Proceedings
    of the AAAI Conference on Artificial Intelligence. 36(7), 7326–7336.
  mla: Lechner, Mathias, et al. “Stability Verification in Stochastic Control Systems
    via Neural Network Supermartingales.” <i>Proceedings of the AAAI Conference on
    Artificial Intelligence</i>, vol. 36, no. 7, Association for the Advancement of
    Artificial Intelligence, 2022, pp. 7326–36, doi:<a href="https://doi.org/10.1609/aaai.v36i7.20695">10.1609/aaai.v36i7.20695</a>.
  short: M. Lechner, D. Zikelic, K. Chatterjee, T.A. Henzinger, Proceedings of the
    AAAI Conference on Artificial Intelligence 36 (2022) 7326–7336.
corr_author: '1'
date_created: 2023-02-05T17:29:50Z
date_published: 2022-06-28T00:00:00Z
date_updated: 2026-04-07T13:27:55Z
day: '28'
department:
- _id: ToHe
- _id: KrCh
doi: 10.1609/aaai.v36i7.20695
ec_funded: 1
external_id:
  arxiv:
  - '2112.09495'
intvolume: '        36'
issue: '7'
keyword:
- General Medicine
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2112.09495
month: '06'
oa: 1
oa_version: Preprint
page: 7326-7336
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 AAAI Conference on Artificial Intelligence
publication_identifier:
  eissn:
  - 2374-3468
  isbn:
  - '9781577358350'
  issn:
  - 2159-5399
publication_status: published
publisher: Association for the Advancement of Artificial Intelligence
quality_controlled: '1'
related_material:
  record:
  - id: '14539'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Stability verification in stochastic control systems via neural network supermartingales
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 36
year: '2022'
...
---
_id: '12568'
abstract:
- lang: eng
  text: We treat the problem of risk-aware control for stochastic shortest path (SSP)
    on Markov decision processes (MDP). Typically, expectation is considered for SSP,
    which however is oblivious to the incurred risk. We present an alternative view,
    instead optimizing conditional value-at-risk (CVaR), an established risk measure.
    We treat both Markov chains as well as MDP and introduce, through novel insights,
    two algorithms, based on linear programming and value iteration, respectively.
    Both algorithms offer precise and provably correct solutions. Evaluation of our
    prototype implementation shows that risk-aware control is feasible on several
    moderately sized models.
article_processing_charge: No
arxiv: 1
author:
- first_name: Tobias
  full_name: Meggendorfer, Tobias
  id: b21b0c15-30a2-11eb-80dc-f13ca25802e1
  last_name: Meggendorfer
  orcid: 0000-0002-1712-2165
citation:
  ama: 'Meggendorfer T. Risk-aware stochastic shortest path. In: <i>Proceedings of
    the 36th AAAI Conference on Artificial Intelligence, AAAI 2022</i>. Vol 36. Association
    for the Advancement of Artificial Intelligence; 2022:9858-9867. doi:<a href="https://doi.org/10.1609/aaai.v36i9.21222">10.1609/aaai.v36i9.21222</a>'
  apa: 'Meggendorfer, T. (2022). Risk-aware stochastic shortest path. In <i>Proceedings
    of the 36th AAAI Conference on Artificial Intelligence, AAAI 2022</i> (Vol. 36,
    pp. 9858–9867). Virtual: Association for the Advancement of Artificial Intelligence.
    <a href="https://doi.org/10.1609/aaai.v36i9.21222">https://doi.org/10.1609/aaai.v36i9.21222</a>'
  chicago: Meggendorfer, Tobias. “Risk-Aware Stochastic Shortest Path.” In <i>Proceedings
    of the 36th AAAI Conference on Artificial Intelligence, AAAI 2022</i>, 36:9858–67.
    Association for the Advancement of Artificial Intelligence, 2022. <a href="https://doi.org/10.1609/aaai.v36i9.21222">https://doi.org/10.1609/aaai.v36i9.21222</a>.
  ieee: T. Meggendorfer, “Risk-aware stochastic shortest path,” in <i>Proceedings
    of the 36th AAAI Conference on Artificial Intelligence, AAAI 2022</i>, Virtual,
    2022, vol. 36, no. 9, pp. 9858–9867.
  ista: Meggendorfer T. 2022. Risk-aware stochastic shortest path. Proceedings of
    the 36th AAAI Conference on Artificial Intelligence, AAAI 2022. Conference on
    Artificial Intelligence vol. 36, 9858–9867.
  mla: Meggendorfer, Tobias. “Risk-Aware Stochastic Shortest Path.” <i>Proceedings
    of the 36th AAAI Conference on Artificial Intelligence, AAAI 2022</i>, vol. 36,
    no. 9, Association for the Advancement of Artificial Intelligence, 2022, pp. 9858–67,
    doi:<a href="https://doi.org/10.1609/aaai.v36i9.21222">10.1609/aaai.v36i9.21222</a>.
  short: T. Meggendorfer, in:, Proceedings of the 36th AAAI Conference on Artificial
    Intelligence, AAAI 2022, Association for the Advancement of Artificial Intelligence,
    2022, pp. 9858–9867.
conference:
  end_date: 2022-03-01
  location: Virtual
  name: Conference on Artificial Intelligence
  start_date: 2022-02-22
corr_author: '1'
date_created: 2023-02-19T23:00:56Z
date_published: 2022-06-28T00:00:00Z
date_updated: 2024-10-09T21:04:32Z
day: '28'
department:
- _id: KrCh
doi: 10.1609/aaai.v36i9.21222
external_id:
  arxiv:
  - '2203.01640'
intvolume: '        36'
issue: '9'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: ' https://doi.org/10.48550/arXiv.2203.01640'
month: '06'
oa: 1
oa_version: Preprint
page: 9858-9867
publication: Proceedings of the 36th AAAI Conference on Artificial Intelligence, AAAI
  2022
publication_identifier:
  eissn:
  - 2374-3468
  isbn:
  - '1577358767'
publication_status: published
publisher: Association for the Advancement of Artificial Intelligence
quality_controlled: '1'
scopus_import: '1'
status: public
title: Risk-aware stochastic shortest path
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 36
year: '2022'
...
---
_id: '12677'
abstract:
- lang: eng
  text: "In modern sample-driven Prophet Inequality, an adversary chooses a sequence
    of n items with values v1,v2,…,vn to be presented to a decision maker (DM). The
    process follows in two phases. In the first phase (sampling phase), some items,
    possibly selected at random, are revealed to the DM, but she can never accept
    them. In the second phase, the DM is presented with the other items in a random
    order and online fashion. For each item, she must make an irrevocable decision
    to either accept the item and stop the process or reject the item forever and
    proceed to the next item. The goal of the DM is to maximize the expected value
    as compared to a Prophet (or offline algorithm) that has access to all information.
    In this setting, the sampling phase has no cost and is not part of the optimization
    process. However, in many scenarios, the samples are obtained as part of the decision-making
    process.\r\nWe model this aspect as a two-phase Prophet Inequality where an adversary
    chooses a sequence of 2n items with values v1,v2,…,v2n and the items are randomly
    ordered. Finally, there are two phases of the Prophet Inequality problem with
    the first n-items and the rest of the items, respectively. We show that some basic
    algorithms achieve a ratio of at most 0.450. We present an algorithm that achieves
    a ratio of at least 0.495. Finally, we show that for every algorithm the ratio
    it can achieve is at most 0.502. Hence our algorithm is near-optimal."
acknowledgement: This research was partially supported by the ERC CoG 863818 (ForM-SMArt)
  grant.
article_number: '2209.14368'
article_processing_charge: No
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: Mona
  full_name: Mohammadi, Mona
  id: 4363614d-b686-11ed-a7d5-ac9e4a24bc2e
  last_name: Mohammadi
- 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
citation:
  ama: Chatterjee K, Mohammadi M, Saona Urmeneta RJ. Repeated prophet inequality with
    near-optimal bounds. <i>arXiv</i>. doi:<a href="https://doi.org/10.48550/ARXIV.2209.14368">10.48550/ARXIV.2209.14368</a>
  apa: Chatterjee, K., Mohammadi, M., &#38; Saona Urmeneta, R. J. (n.d.). Repeated
    prophet inequality with near-optimal bounds. <i>arXiv</i>. <a href="https://doi.org/10.48550/ARXIV.2209.14368">https://doi.org/10.48550/ARXIV.2209.14368</a>
  chicago: Chatterjee, Krishnendu, Mona Mohammadi, and Raimundo J Saona Urmeneta.
    “Repeated Prophet Inequality with Near-Optimal Bounds.” <i>ArXiv</i>, n.d. <a
    href="https://doi.org/10.48550/ARXIV.2209.14368">https://doi.org/10.48550/ARXIV.2209.14368</a>.
  ieee: K. Chatterjee, M. Mohammadi, and R. J. Saona Urmeneta, “Repeated prophet inequality
    with near-optimal bounds,” <i>arXiv</i>. .
  ista: Chatterjee K, Mohammadi M, Saona Urmeneta RJ. Repeated prophet inequality
    with near-optimal bounds. arXiv, 2209.14368.
  mla: Chatterjee, Krishnendu, et al. “Repeated Prophet Inequality with Near-Optimal
    Bounds.” <i>ArXiv</i>, 2209.14368, doi:<a href="https://doi.org/10.48550/ARXIV.2209.14368">10.48550/ARXIV.2209.14368</a>.
  short: K. Chatterjee, M. Mohammadi, R.J. Saona Urmeneta, ArXiv (n.d.).
corr_author: '1'
date_created: 2023-02-24T12:21:40Z
date_published: 2022-09-28T00:00:00Z
date_updated: 2025-04-14T07:52:48Z
day: '28'
department:
- _id: GradSch
- _id: KrCh
doi: 10.48550/ARXIV.2209.14368
ec_funded: 1
external_id:
  arxiv:
  - '2209.14368'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: ' https://doi.org/10.48550/arXiv.2209.14368'
month: '09'
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'
publication: arXiv
publication_status: submitted
status: public
title: Repeated prophet inequality with near-optimal bounds
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
OA_place: repository
_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_number: '2210.05308'
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, 2210.05308.
  mla: Zikelic, Dorde, et al. “Learning Control Policies for Stochastic Systems with
    Reach-Avoid Guarantees.” <i>ArXiv</i>, 2210.05308, 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.).
corr_author: '1'
date_created: 2023-11-24T13:10:09Z
date_published: 2022-11-29T00:00:00Z
date_updated: 2026-04-07T13:27:56Z
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: draft
related_material:
  record:
  - id: '14830'
    relation: later_version
    status: public
  - id: '14539'
    relation: dissertation_contains
    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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
OA_place: repository
_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_number: '2205.11991'
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, 2205.11991.
  mla: Zikelic, Dorde, et al. “Learning Stabilizing Policies in Stochastic Control
    Systems.” <i>ArXiv</i>, 2205.11991, 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.).
corr_author: '1'
date_created: 2023-11-24T13:22:30Z
date_published: 2022-05-24T00:00:00Z
date_updated: 2026-04-07T13:27:56Z
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: draft
related_material:
  record:
  - id: '14539'
    relation: dissertation_contains
    status: public
status: public
title: Learning stabilizing policies in stochastic control systems
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
_id: '17061'
abstract:
- lang: eng
  text: Across many domains of interaction, both natural and artificial, individuals
    use past experience to shape future behaviors. The results of such learning processes
    depend on what individuals wish to maximize. A natural objective is one’s own
    success. However, when two such “selfish” learners interact with each other, the
    outcome can be detrimental to both, especially when there are conflicts of interest.
    Here, we explore how a learner can align incentives with a selfish opponent. Moreover,
    we consider the dynamics that arise when learning rules themselves are subject
    to evolutionary pressure. By combining extensive simulations and analytical techniques,
    we demonstrate that selfish learning is unstable in most classical two-player
    repeated games. If evolution operates on the level of long-run payoffs, selection
    instead favors learning rules that incorporate social (other-regarding) preferences.
    To further corroborate these results, we analyze data from a repeated prisoner’s
    dilemma experiment. We find that selfish learning is insufficient to explain human
    behavior when there is a trade-off between payoff maximization and fairness.
acknowledgement: The authors are grateful to Jörg Oechssler for many helpful comments.
  A.M. was supported by a Simons Postdoctoral Fellowship (Math+X) at the University
  of Pennsylvania; K.C. was supported by the European Research Council Consolidator
  Grant 863818 (ForM-SMArt); and C.H. was supported by the European Research Council
  Starting Grant 850529 (E-DIRECT).
article_number: pgac141
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Alex
  full_name: McAvoy, Alex
  last_name: McAvoy
- first_name: Julian
  full_name: Kates-Harbeck, Julian
  last_name: Kates-Harbeck
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Christian
  full_name: Hilbe, Christian
  id: 2FDF8F3C-F248-11E8-B48F-1D18A9856A87
  last_name: Hilbe
  orcid: 0000-0001-5116-955X
citation:
  ama: McAvoy A, Kates-Harbeck J, Chatterjee K, Hilbe C. Evolutionary instability
    of selfish learning in repeated games. <i>PNAS Nexus</i>. 2022;1(4). doi:<a href="https://doi.org/10.1093/pnasnexus/pgac141">10.1093/pnasnexus/pgac141</a>
  apa: McAvoy, A., Kates-Harbeck, J., Chatterjee, K., &#38; Hilbe, C. (2022). Evolutionary
    instability of selfish learning in repeated games. <i>PNAS Nexus</i>. Oxford University
    Press. <a href="https://doi.org/10.1093/pnasnexus/pgac141">https://doi.org/10.1093/pnasnexus/pgac141</a>
  chicago: McAvoy, Alex, Julian Kates-Harbeck, Krishnendu Chatterjee, and Christian
    Hilbe. “Evolutionary Instability of Selfish Learning in Repeated Games.” <i>PNAS
    Nexus</i>. Oxford University Press, 2022. <a href="https://doi.org/10.1093/pnasnexus/pgac141">https://doi.org/10.1093/pnasnexus/pgac141</a>.
  ieee: A. McAvoy, J. Kates-Harbeck, K. Chatterjee, and C. Hilbe, “Evolutionary instability
    of selfish learning in repeated games,” <i>PNAS Nexus</i>, vol. 1, no. 4. Oxford
    University Press, 2022.
  ista: McAvoy A, Kates-Harbeck J, Chatterjee K, Hilbe C. 2022. Evolutionary instability
    of selfish learning in repeated games. PNAS Nexus. 1(4), pgac141.
  mla: McAvoy, Alex, et al. “Evolutionary Instability of Selfish Learning in Repeated
    Games.” <i>PNAS Nexus</i>, vol. 1, no. 4, pgac141, Oxford University Press, 2022,
    doi:<a href="https://doi.org/10.1093/pnasnexus/pgac141">10.1093/pnasnexus/pgac141</a>.
  short: A. McAvoy, J. Kates-Harbeck, K. Chatterjee, C. Hilbe, PNAS Nexus 1 (2022).
date_created: 2024-05-28T14:23:12Z
date_published: 2022-09-01T00:00:00Z
date_updated: 2025-06-11T13:54:20Z
day: '01'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1093/pnasnexus/pgac141
ec_funded: 1
external_id:
  arxiv:
  - '2105.06199'
  pmid:
  - '36714856'
file:
- access_level: open_access
  checksum: 79a8e3e4be7e8a2b407b4efddd65f3f3
  content_type: application/pdf
  creator: dernst
  date_created: 2024-08-06T07:33:30Z
  date_updated: 2024-08-06T07:33:30Z
  file_id: '17400'
  file_name: 2022_PNASNexus_McAvoy.pdf
  file_size: 2410962
  relation: main_file
  success: 1
file_date_updated: 2024-08-06T07:33:30Z
has_accepted_license: '1'
intvolume: '         1'
issue: '4'
language:
- iso: eng
month: '09'
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'
publication: PNAS Nexus
publication_identifier:
  issn:
  - 2752-6542
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
related_material:
  link:
  - relation: software
    url: https://github.com/alexmcavoy/fmtl/
scopus_import: '1'
status: public
title: Evolutionary instability of selfish learning in repeated 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: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1
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.
corr_author: '1'
date_created: 2022-01-06T12:37:27Z
date_published: 2022-10-01T00:00:00Z
date_updated: 2025-04-15T06:53:08Z
day: '01'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1007/s00236-021-00412-y
external_id:
  isi:
  - '000735765500001'
file:
- access_level: open_access
  checksum: bf1c195b6aaf59e8530cf9e3a9d731f7
  content_type: application/pdf
  creator: cchlebak
  date_created: 2022-01-07T07:50:31Z
  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: '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: 2025-04-14T07:52:45Z
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: '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: 2026-04-07T12:31:21Z
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'
related_material:
  record:
  - id: '20234'
    relation: dissertation_contains
    status: public
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: '12775'
abstract:
- lang: eng
  text: "We consider the problem of approximating the reachability probabilities in
    Markov decision processes (MDP) with uncountable (continuous) state and action
    spaces. While there are algorithms that, for special classes of such MDP, provide
    a sequence of approximations converging to the true value in the limit, our aim
    is to obtain an algorithm with guarantees on the precision of the approximation.\r\nAs
    this problem is undecidable in general, assumptions on the MDP are necessary.
    Our main contribution is to identify sufficient assumptions that are as weak as
    possible, thus approaching the \"boundary\" of which systems can be correctly
    and reliably analyzed. To this end, we also argue why each of our assumptions
    is necessary for algorithms based on processing finitely many observations.\r\nWe
    present two solution variants. The first one provides converging lower bounds
    under weaker assumptions than typical ones from previous works concerned with
    guarantees. The second one then utilizes stronger assumptions to additionally
    provide converging upper bounds. Altogether, we obtain an anytime algorithm, i.e.
    yielding a sequence of approximants with known and iteratively improving precision,
    converging to the true value in the limit. Besides, due to the generality of our
    assumptions, our algorithms are very general templates, readily allowing for various
    heuristics from literature in contrast to, e.g., a specific discretization algorithm.
    Our theoretical contribution thus paves the way for future practical improvements
    without sacrificing correctness guarantees."
acknowledgement: "Kush Grover: The author has been supported by the DFG research training
  group GRK\r\n2428 ConVeY.\r\nMaximilian Weininger: The author has been partially
  supported by DFG projects 383882557\r\nStatistical Unbounded Verification (SUV)
  and 427755713 Group-By Objectives in Probabilistic\r\nVerification (GOPro)"
alternative_title:
- LIPIcs
article_number: '11'
article_processing_charge: No
arxiv: 1
author:
- first_name: Kush
  full_name: Grover, Kush
  last_name: Grover
- 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: Maimilian
  full_name: Weininger, Maimilian
  last_name: Weininger
citation:
  ama: 'Grover K, Kretinsky J, Meggendorfer T, Weininger M. Anytime guarantees for
    reachability in uncountable Markov decision processes. In: <i>33rd International
    Conference on Concurrency Theory</i>. Vol 243. Schloss Dagstuhl - Leibniz-Zentrum
    für Informatik; 2022. doi:<a href="https://doi.org/10.4230/LIPIcs.CONCUR.2022.11">10.4230/LIPIcs.CONCUR.2022.11</a>'
  apa: 'Grover, K., Kretinsky, J., Meggendorfer, T., &#38; Weininger, M. (2022). Anytime
    guarantees for reachability in uncountable Markov decision processes. In <i>33rd
    International Conference on Concurrency Theory</i> (Vol. 243). Warsaw, Poland:
    Schloss Dagstuhl - Leibniz-Zentrum für Informatik. <a href="https://doi.org/10.4230/LIPIcs.CONCUR.2022.11">https://doi.org/10.4230/LIPIcs.CONCUR.2022.11</a>'
  chicago: Grover, Kush, Jan Kretinsky, Tobias Meggendorfer, and Maimilian Weininger.
    “Anytime Guarantees for Reachability in Uncountable Markov Decision Processes.”
    In <i>33rd International Conference on Concurrency Theory</i>, Vol. 243. Schloss
    Dagstuhl - Leibniz-Zentrum für Informatik, 2022. <a href="https://doi.org/10.4230/LIPIcs.CONCUR.2022.11">https://doi.org/10.4230/LIPIcs.CONCUR.2022.11</a>.
  ieee: K. Grover, J. Kretinsky, T. Meggendorfer, and M. Weininger, “Anytime guarantees
    for reachability in uncountable Markov decision processes,” in <i>33rd International
    Conference on Concurrency Theory</i>, Warsaw, Poland, 2022, vol. 243.
  ista: 'Grover K, Kretinsky J, Meggendorfer T, Weininger M. 2022. Anytime guarantees
    for reachability in uncountable Markov decision processes. 33rd International
    Conference on Concurrency Theory. CONCUR: Conference on Concurrency Theory, LIPIcs,
    vol. 243, 11.'
  mla: Grover, Kush, et al. “Anytime Guarantees for Reachability in Uncountable Markov
    Decision Processes.” <i>33rd International Conference on Concurrency Theory</i>,
    vol. 243, 11, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2022, doi:<a
    href="https://doi.org/10.4230/LIPIcs.CONCUR.2022.11">10.4230/LIPIcs.CONCUR.2022.11</a>.
  short: K. Grover, J. Kretinsky, T. Meggendorfer, M. Weininger, in:, 33rd International
    Conference on Concurrency Theory, Schloss Dagstuhl - Leibniz-Zentrum für Informatik,
    2022.
conference:
  end_date: 2022-09-16
  location: Warsaw, Poland
  name: 'CONCUR: Conference on Concurrency Theory'
  start_date: 2022-09-13
corr_author: '1'
das_tickbox: '1'
date_created: 2023-03-28T08:09:32Z
date_published: 2022-09-15T00:00:00Z
date_updated: 2026-07-07T13:37:58Z
day: '15'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.4230/LIPIcs.CONCUR.2022.11
external_id:
  arxiv:
  - '2008.04824'
file:
- access_level: open_access
  checksum: e282e43d3ae0ba6e067b72f4583e13c0
  content_type: application/pdf
  creator: dernst
  date_created: 2023-09-26T10:43:15Z
  date_updated: 2023-09-26T10:43:15Z
  file_id: '14372'
  file_name: 2022_LIPIcS_Grover.pdf
  file_size: 960036
  relation: main_file
  success: 1
file_date_updated: 2023-09-26T10:43:15Z
has_accepted_license: '1'
intvolume: '       243'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
publication: 33rd International Conference on Concurrency Theory
publication_identifier:
  issn:
  - 1868-8969
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
scopus_import: '1'
status: public
title: Anytime guarantees for reachability in uncountable Markov decision processes
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: 243
year: '2022'
...
---
_id: '10847'
abstract:
- lang: eng
  text: 'We study the two-player zero-sum extension of the partially observable stochastic
    shortest-path problem where one agent has only partial information about the environment.
    We formulate this problem as a partially observable stochastic game (POSG): given
    a set of target states and negative rewards for each transition, the player with
    imperfect information maximizes the expected undiscounted total reward until a
    target state is reached. The second player with the perfect information aims for
    the opposite. We base our formalism on POSGs with one-sided observability (OS-POSGs)
    and give the following contributions: (1) we introduce a novel heuristic search
    value iteration algorithm that iteratively solves depth-limited variants of the
    game, (2) we derive the bound on the depth guaranteeing an arbitrary precision,
    (3) we propose a novel upper-bound estimation that allows early terminations,
    and (4) we experimentally evaluate the algorithm on a pursuit-evasion game.'
acknowledgement: "This research was supported by the Czech Science Foundation (no.
  19-24384Y), by the OP VVV MEYS funded project CZ.02.1.01/0.0/0.0/16 019/0000765
  “Research Center for Informatics”, by the ERC CoG 863818 (ForM-SMArt), and by the
  Combat Capabilities Development Command Army Research Laboratory and was accomplished
  under Cooperative\r\nAgreement Number W911NF-13-2-0045 (ARL Cyber Security CRA).
  The views and conclusions contained in this document are those of the authors and
  should not be interpreted as\r\nrepresenting the official policies, either expressed
  or implied, of the Combat Capabilities Development Command Army Research Laboratory
  or the U.S. Government. The U.S. Government is authorized to reproduce and distribute
  reprints for Government purposes not withstanding any copyright notation here on. "
article_processing_charge: No
author:
- first_name: Petr
  full_name: Tomášek, Petr
  last_name: Tomášek
- first_name: Karel
  full_name: Horák, Karel
  last_name: Horák
- first_name: Aditya
  full_name: Aradhye, Aditya
  last_name: Aradhye
- first_name: Branislav
  full_name: Bošanský, Branislav
  last_name: Bošanský
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
citation:
  ama: 'Tomášek P, Horák K, Aradhye A, Bošanský B, Chatterjee K. Solving partially
    observable stochastic shortest-path games. In: <i>30th International Joint Conference
    on Artificial Intelligence</i>. International Joint Conferences on Artificial
    Intelligence; 2021:4182-4189. doi:<a href="https://doi.org/10.24963/ijcai.2021/575">10.24963/ijcai.2021/575</a>'
  apa: 'Tomášek, P., Horák, K., Aradhye, A., Bošanský, B., &#38; Chatterjee, K. (2021).
    Solving partially observable stochastic shortest-path games. In <i>30th International
    Joint Conference on Artificial Intelligence</i> (pp. 4182–4189). Virtual, Online:
    International Joint Conferences on Artificial Intelligence. <a href="https://doi.org/10.24963/ijcai.2021/575">https://doi.org/10.24963/ijcai.2021/575</a>'
  chicago: Tomášek, Petr, Karel Horák, Aditya Aradhye, Branislav Bošanský, and Krishnendu
    Chatterjee. “Solving Partially Observable Stochastic Shortest-Path Games.” In
    <i>30th International Joint Conference on Artificial Intelligence</i>, 4182–89.
    International Joint Conferences on Artificial Intelligence, 2021. <a href="https://doi.org/10.24963/ijcai.2021/575">https://doi.org/10.24963/ijcai.2021/575</a>.
  ieee: P. Tomášek, K. Horák, A. Aradhye, B. Bošanský, and K. Chatterjee, “Solving
    partially observable stochastic shortest-path games,” in <i>30th International
    Joint Conference on Artificial Intelligence</i>, Virtual, Online, 2021, pp. 4182–4189.
  ista: 'Tomášek P, Horák K, Aradhye A, Bošanský B, Chatterjee K. 2021. Solving partially
    observable stochastic shortest-path games. 30th International Joint Conference
    on Artificial Intelligence. IJCAI: International Joint Conferences on Artificial
    Intelligence, 4182–4189.'
  mla: Tomášek, Petr, et al. “Solving Partially Observable Stochastic Shortest-Path
    Games.” <i>30th International Joint Conference on Artificial Intelligence</i>,
    International Joint Conferences on Artificial Intelligence, 2021, pp. 4182–89,
    doi:<a href="https://doi.org/10.24963/ijcai.2021/575">10.24963/ijcai.2021/575</a>.
  short: P. Tomášek, K. Horák, A. Aradhye, B. Bošanský, K. Chatterjee, in:, 30th International
    Joint Conference on Artificial Intelligence, International Joint Conferences on
    Artificial Intelligence, 2021, pp. 4182–4189.
conference:
  end_date: 2021-08-27
  location: Virtual, Online
  name: 'IJCAI: International Joint Conferences on Artificial Intelligence'
  start_date: 2021-08-19
date_created: 2022-03-13T23:01:47Z
date_published: 2021-09-01T00:00:00Z
date_updated: 2026-06-18T10:41:02Z
day: '01'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.24963/ijcai.2021/575
ec_funded: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.24963/ijcai.2021/575
month: '09'
oa: 1
oa_version: Published Version
page: 4182-4189
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication: 30th International Joint Conference on Artificial Intelligence
publication_identifier:
  isbn:
  - '9780999241196'
  issn:
  - 1045-0823
publication_status: published
publisher: International Joint Conferences on Artificial Intelligence
quality_controlled: '1'
scopus_import: '1'
status: public
title: Solving partially observable stochastic shortest-path games
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '12767'
abstract:
- lang: eng
  text: "Several problems in planning and reactive synthesis can be reduced to the
    analysis of two-player quantitative graph games. Optimization is one form of analysis.
    We argue that in many cases it may be better to replace the optimization problem
    with the satisficing problem, where instead of searching for optimal solutions,
    the goal is to search for solutions that adhere to a given threshold bound.\r\nThis
    work defines and investigates the satisficing problem on a two-player graph game
    with the discounted-sum cost model. We show that while the satisficing problem
    can be solved using numerical methods just like the optimization problem, this
    approach does not render compelling benefits over optimization. When the discount
    factor is, however, an integer, we present another approach to satisficing, which
    is purely based on automata methods. We show that this approach is algorithmically
    more performant – both theoretically and empirically – and demonstrates the broader
    applicability of satisficing over optimization."
acknowledgement: We thank anonymous reviewers for valuable inputs. This work is supported
  in part by NSF grant 2030859 to the CRA for the CIFellows Project, NSF grants IIS-1527668,
  CCF-1704883, IIS-1830549, the ERC CoG 863818 (ForM-SMArt), and an award from the
  Maryland Procurement Office.
alternative_title:
- LNCS
article_processing_charge: No
arxiv: 1
author:
- first_name: Suguman
  full_name: Bansal, Suguman
  last_name: Bansal
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Moshe Y.
  full_name: Vardi, Moshe Y.
  last_name: Vardi
citation:
  ama: 'Bansal S, Chatterjee K, Vardi MY. On satisficing in quantitative games. In:
    <i>27th International Conference on Tools and Algorithms for the Construction
    and Analysis of Systems</i>. Vol 12651. Springer Nature; 2021:20-37. doi:<a href="https://doi.org/10.1007/978-3-030-72016-2_2">10.1007/978-3-030-72016-2_2</a>'
  apa: 'Bansal, S., Chatterjee, K., &#38; Vardi, M. Y. (2021). On satisficing in quantitative
    games. In <i>27th International Conference on Tools and Algorithms for the Construction
    and Analysis of Systems</i> (Vol. 12651, pp. 20–37). Luxembourg City, Luxembourg:
    Springer Nature. <a href="https://doi.org/10.1007/978-3-030-72016-2_2">https://doi.org/10.1007/978-3-030-72016-2_2</a>'
  chicago: Bansal, Suguman, Krishnendu Chatterjee, and Moshe Y. Vardi. “On Satisficing
    in Quantitative Games.” In <i>27th International Conference on Tools and Algorithms
    for the Construction and Analysis of Systems</i>, 12651:20–37. Springer Nature,
    2021. <a href="https://doi.org/10.1007/978-3-030-72016-2_2">https://doi.org/10.1007/978-3-030-72016-2_2</a>.
  ieee: S. Bansal, K. Chatterjee, and M. Y. Vardi, “On satisficing in quantitative
    games,” in <i>27th International Conference on Tools and Algorithms for the Construction
    and Analysis of Systems</i>, Luxembourg City, Luxembourg, 2021, vol. 12651, pp.
    20–37.
  ista: 'Bansal S, Chatterjee K, Vardi MY. 2021. On satisficing in quantitative games.
    27th International Conference on Tools and Algorithms for the Construction and
    Analysis of Systems. TACAS: Tools and Algorithms for the Construction and Analysis
    of Systems, LNCS, vol. 12651, 20–37.'
  mla: Bansal, Suguman, et al. “On Satisficing in Quantitative Games.” <i>27th International
    Conference on Tools and Algorithms for the Construction and Analysis of Systems</i>,
    vol. 12651, Springer Nature, 2021, pp. 20–37, doi:<a href="https://doi.org/10.1007/978-3-030-72016-2_2">10.1007/978-3-030-72016-2_2</a>.
  short: S. Bansal, K. Chatterjee, M.Y. Vardi, in:, 27th International Conference
    on Tools and Algorithms for the Construction and Analysis of Systems, Springer
    Nature, 2021, pp. 20–37.
conference:
  end_date: 2021-04-01
  location: Luxembourg City, Luxembourg
  name: 'TACAS: Tools and Algorithms for the Construction and Analysis of Systems'
  start_date: 2021-03-27
date_created: 2023-03-26T22:01:09Z
date_published: 2021-03-21T00:00:00Z
date_updated: 2025-07-10T13:18:02Z
day: '21'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1007/978-3-030-72016-2_2
ec_funded: 1
external_id:
  arxiv:
  - '2101.02594'
file:
- access_level: open_access
  checksum: b020b78b23587ce7610b1aafb4e63438
  content_type: application/pdf
  creator: dernst
  date_created: 2023-03-28T11:00:33Z
  date_updated: 2023-03-28T11:00:33Z
  file_id: '12777'
  file_name: 2021_LNCS_Bansal.pdf
  file_size: 747418
  relation: main_file
  success: 1
file_date_updated: 2023-03-28T11:00:33Z
has_accepted_license: '1'
intvolume: '     12651'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 20-37
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
publication: 27th International Conference on Tools and Algorithms for the Construction
  and Analysis of Systems
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783030720155'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: On satisficing in quantitative 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: 12651
year: '2021'
...
