---
_id: '13139'
abstract:
- lang: eng
  text: A classical problem for Markov chains is determining their stationary (or
    steady-state) distribution. This problem has an equally classical solution based
    on eigenvectors and linear equation systems. However, this approach does not scale
    to large instances, and iterative solutions are desirable. It turns out that a
    naive approach, as used by current model checkers, may yield completely wrong
    results. We present a new approach, which utilizes recent advances in partial
    exploration and mean payoff computation to obtain a correct, converging approximation.
alternative_title:
- LNCS
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. Correct approximation of stationary distributions. In: <i>TACAS
    2023: Tools and Algorithms for the Construction and Analysis of Systems</i>. Vol
    13993. Springer Nature; 2023:489-507. doi:<a href="https://doi.org/10.1007/978-3-031-30823-9_25">10.1007/978-3-031-30823-9_25</a>'
  apa: 'Meggendorfer, T. (2023). Correct approximation of stationary distributions.
    In <i>TACAS 2023: Tools and Algorithms for the Construction and Analysis of Systems</i>
    (Vol. 13993, pp. 489–507). Paris, France: Springer Nature. <a href="https://doi.org/10.1007/978-3-031-30823-9_25">https://doi.org/10.1007/978-3-031-30823-9_25</a>'
  chicago: 'Meggendorfer, Tobias. “Correct Approximation of Stationary Distributions.”
    In <i>TACAS 2023: Tools and Algorithms for the Construction and Analysis of Systems</i>,
    13993:489–507. Springer Nature, 2023. <a href="https://doi.org/10.1007/978-3-031-30823-9_25">https://doi.org/10.1007/978-3-031-30823-9_25</a>.'
  ieee: 'T. Meggendorfer, “Correct approximation of stationary distributions,” in
    <i>TACAS 2023: Tools and Algorithms for the Construction and Analysis of Systems</i>,
    Paris, France, 2023, vol. 13993, pp. 489–507.'
  ista: 'Meggendorfer T. 2023. Correct approximation of stationary distributions.
    TACAS 2023: Tools and Algorithms for the Construction and Analysis of Systems.
    TACAS: Tools and Algorithms for the Construction and Analysis of Systems, LNCS,
    vol. 13993, 489–507.'
  mla: 'Meggendorfer, Tobias. “Correct Approximation of Stationary Distributions.”
    <i>TACAS 2023: Tools and Algorithms for the Construction and Analysis of Systems</i>,
    vol. 13993, Springer Nature, 2023, pp. 489–507, doi:<a href="https://doi.org/10.1007/978-3-031-30823-9_25">10.1007/978-3-031-30823-9_25</a>.'
  short: 'T. Meggendorfer, in:, TACAS 2023: Tools and Algorithms for the Construction
    and Analysis of Systems, Springer Nature, 2023, pp. 489–507.'
conference:
  end_date: 2023-04-27
  location: Paris, France
  name: 'TACAS: Tools and Algorithms for the Construction and Analysis of Systems'
  start_date: 2023-04-22
date_created: 2023-06-18T22:00:46Z
date_published: 2023-04-22T00:00:00Z
date_updated: 2024-02-27T07:19:33Z
day: '22'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1007/978-3-031-30823-9_25
external_id:
  arxiv:
  - '2301.08137'
file:
- access_level: open_access
  checksum: 59f707a3949c03793251b0d04c62542a
  content_type: application/pdf
  creator: dernst
  date_created: 2023-06-19T07:18:40Z
  date_updated: 2023-06-19T07:18:40Z
  file_id: '13148'
  file_name: 2023_LNCS_Meggendorfer.pdf
  file_size: 521951
  relation: main_file
  success: 1
file_date_updated: 2023-06-19T07:18:40Z
has_accepted_license: '1'
intvolume: '     13993'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '04'
oa: 1
oa_version: Published Version
page: 489-507
publication: 'TACAS 2023: Tools and Algorithms for the Construction and Analysis of
  Systems'
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783031308222'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '14990'
    relation: research_data
    status: public
scopus_import: '1'
status: public
title: Correct approximation of stationary distributions
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: 13993
year: '2023'
...
---
_id: '13142'
abstract:
- lang: eng
  text: Reinforcement learning has received much attention for learning controllers
    of deterministic systems. We consider a learner-verifier framework for stochastic
    control systems and survey recent methods that formally guarantee a conjunction
    of reachability and safety properties. Given a property and a lower bound on the
    probability of the property being satisfied, our framework jointly learns a control
    policy and a formal certificate to ensure the satisfaction of the property with
    a desired probability threshold. Both the control policy and the formal certificate
    are continuous functions from states to reals, which are learned as parameterized
    neural networks. While in the deterministic case, the certificates are invariant
    and barrier functions for safety, or Lyapunov and ranking functions for liveness,
    in the stochastic case the certificates are supermartingales. For certificate
    verification, we use interval arithmetic abstract interpretation to bound the
    expected values of neural network functions.
acknowledgement: This work was supported in part by the ERC-2020-AdG 101020093, ERC
  CoG 863818 (FoRM-SMArt) and the European Union’s Horizon 2020 research and innovation
  programme under the Marie Skłodowska-Curie Grant Agreement No. 665385.
alternative_title:
- LNCS
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: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
- 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
citation:
  ama: 'Chatterjee K, Henzinger TA, Lechner M, Zikelic D. A learner-verifier framework
    for neural network controllers and certificates of stochastic systems. In: <i>Tools
    and Algorithms for the Construction and Analysis of Systems </i>. Vol 13993. Springer
    Nature; 2023:3-25. doi:<a href="https://doi.org/10.1007/978-3-031-30823-9_1">10.1007/978-3-031-30823-9_1</a>'
  apa: 'Chatterjee, K., Henzinger, T. A., Lechner, M., &#38; Zikelic, D. (2023). A
    learner-verifier framework for neural network controllers and certificates of
    stochastic systems. In <i>Tools and Algorithms for the Construction and Analysis
    of Systems </i> (Vol. 13993, pp. 3–25). Paris, France: Springer Nature. <a href="https://doi.org/10.1007/978-3-031-30823-9_1">https://doi.org/10.1007/978-3-031-30823-9_1</a>'
  chicago: Chatterjee, Krishnendu, Thomas A Henzinger, Mathias Lechner, and Dorde
    Zikelic. “A Learner-Verifier Framework for Neural Network Controllers and Certificates
    of Stochastic Systems.” In <i>Tools and Algorithms for the Construction and Analysis
    of Systems </i>, 13993:3–25. Springer Nature, 2023. <a href="https://doi.org/10.1007/978-3-031-30823-9_1">https://doi.org/10.1007/978-3-031-30823-9_1</a>.
  ieee: K. Chatterjee, T. A. Henzinger, M. Lechner, and D. Zikelic, “A learner-verifier
    framework for neural network controllers and certificates of stochastic systems,”
    in <i>Tools and Algorithms for the Construction and Analysis of Systems </i>,
    Paris, France, 2023, vol. 13993, pp. 3–25.
  ista: 'Chatterjee K, Henzinger TA, Lechner M, Zikelic D. 2023. A learner-verifier
    framework for neural network controllers and certificates of stochastic systems.
    Tools and Algorithms for the Construction and Analysis of Systems . TACAS: Tools
    and Algorithms for the Construction and Analysis of Systems, LNCS, vol. 13993,
    3–25.'
  mla: Chatterjee, Krishnendu, et al. “A Learner-Verifier Framework for Neural Network
    Controllers and Certificates of Stochastic Systems.” <i>Tools and Algorithms for
    the Construction and Analysis of Systems </i>, vol. 13993, Springer Nature, 2023,
    pp. 3–25, doi:<a href="https://doi.org/10.1007/978-3-031-30823-9_1">10.1007/978-3-031-30823-9_1</a>.
  short: K. Chatterjee, T.A. Henzinger, M. Lechner, D. Zikelic, in:, Tools and Algorithms
    for the Construction and Analysis of Systems , Springer Nature, 2023, pp. 3–25.
conference:
  end_date: 2023-04-27
  location: Paris, France
  name: 'TACAS: Tools and Algorithms for the Construction and Analysis of Systems'
  start_date: 2023-04-22
date_created: 2023-06-18T22:00:47Z
date_published: 2023-04-22T00:00:00Z
date_updated: 2025-07-14T09:09:52Z
day: '22'
ddc:
- '000'
department:
- _id: KrCh
- _id: ToHe
doi: 10.1007/978-3-031-30823-9_1
ec_funded: 1
file:
- access_level: open_access
  checksum: 3d8a8bb24d211bc83360dfc2fd744307
  content_type: application/pdf
  creator: dernst
  date_created: 2023-06-19T08:29:30Z
  date_updated: 2023-06-19T08:29:30Z
  file_id: '13150'
  file_name: 2023_LNCS_Chatterjee.pdf
  file_size: 528455
  relation: main_file
  success: 1
file_date_updated: 2023-06-19T08:29:30Z
has_accepted_license: '1'
intvolume: '     13993'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: 3-25
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: 'Tools and Algorithms for the Construction and Analysis of Systems '
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783031308222'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: A learner-verifier framework for neural network controllers and certificates
  of stochastic systems
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: 13993
year: '2023'
...
