---
_id: '12407'
abstract:
- lang: eng
  text: "As the complexity and criticality of software increase every year, so does
    the importance of run-time monitoring. Third-party monitoring, with limited knowledge
    of the monitored software, and best-effort monitoring, which keeps pace with the
    monitored software, are especially valuable, yet underexplored areas of run-time
    monitoring. Most existing monitoring frameworks do not support their combination
    because they either require access to the monitored code for instrumentation purposes
    or the processing of all observed events, or both.\r\n\r\nWe present a middleware
    framework, VAMOS, for the run-time monitoring of software which is explicitly
    designed to support third-party and best-effort scenarios. The design goals of
    VAMOS are (i) efficiency (keeping pace at low overhead), (ii) flexibility (the
    ability to monitor black-box code through a variety of different event channels,
    and the connectability to monitors written in different specification languages),
    and (iii) ease-of-use. To achieve its goals, VAMOS combines aspects of event broker
    and event recognition systems with aspects of stream processing systems.\r\n\r\nWe
    implemented a prototype toolchain for VAMOS and conducted experiments including
    a case study of monitoring for data races. The results indicate that VAMOS enables
    writing useful yet efficient monitors, is compatible with a variety of event sources
    and monitor specifications, and simplifies key aspects of setting up a monitoring
    system from scratch."
acknowledgement: "This work was supported in part by the ERC-2020-AdG 101020093. \r\nThe
  authors would like to thank the anonymous FASE reviewers for their valuable feedback
  and suggestions."
alternative_title:
- IST Austria Technical Report
article_processing_charge: No
author:
- first_name: Marek
  full_name: Chalupa, Marek
  id: 87e34708-d6c6-11ec-9f5b-9391e7be2463
  last_name: Chalupa
- first_name: Fabian
  full_name: Mühlböck, Fabian
  id: 6395C5F6-89DF-11E9-9C97-6BDFE5697425
  last_name: Mühlböck
  orcid: 0000-0003-1548-0177
- first_name: Stefanie
  full_name: Muroya Lei, Stefanie
  id: a376de31-8972-11ed-ae7b-d0251c13c8ff
  last_name: Muroya Lei
- 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: 'Chalupa M, Mühlböck F, Muroya Lei S, Henzinger TA. <i>VAMOS: Middleware for
    Best-Effort Third-Party Monitoring</i>. Institute of Science and Technology Austria;
    2023. doi:<a href="https://doi.org/10.15479/AT:ISTA:12407">10.15479/AT:ISTA:12407</a>'
  apa: 'Chalupa, M., Mühlböck, F., Muroya Lei, S., &#38; Henzinger, T. A. (2023).
    <i>VAMOS: Middleware for Best-Effort Third-Party Monitoring</i>. Institute of
    Science and Technology Austria. <a href="https://doi.org/10.15479/AT:ISTA:12407">https://doi.org/10.15479/AT:ISTA:12407</a>'
  chicago: 'Chalupa, Marek, Fabian Mühlböck, Stefanie Muroya Lei, and Thomas A Henzinger.
    <i>VAMOS: Middleware for Best-Effort Third-Party Monitoring</i>. Institute of
    Science and Technology Austria, 2023. <a href="https://doi.org/10.15479/AT:ISTA:12407">https://doi.org/10.15479/AT:ISTA:12407</a>.'
  ieee: 'M. Chalupa, F. Mühlböck, S. Muroya Lei, and T. A. Henzinger, <i>VAMOS: Middleware
    for Best-Effort Third-Party Monitoring</i>. Institute of Science and Technology
    Austria, 2023.'
  ista: 'Chalupa M, Mühlböck F, Muroya Lei S, Henzinger TA. 2023. VAMOS: Middleware
    for Best-Effort Third-Party Monitoring, Institute of Science and Technology Austria,
    38p.'
  mla: 'Chalupa, Marek, et al. <i>VAMOS: Middleware for Best-Effort Third-Party Monitoring</i>.
    Institute of Science and Technology Austria, 2023, doi:<a href="https://doi.org/10.15479/AT:ISTA:12407">10.15479/AT:ISTA:12407</a>.'
  short: 'M. Chalupa, F. Mühlböck, S. Muroya Lei, T.A. Henzinger, VAMOS: Middleware
    for Best-Effort Third-Party Monitoring, Institute of Science and Technology Austria,
    2023.'
date_created: 2023-01-27T03:18:08Z
date_published: 2023-01-27T00:00:00Z
date_updated: 2023-04-25T07:19:06Z
day: '27'
ddc:
- '005'
department:
- _id: ToHe
doi: 10.15479/AT:ISTA:12407
ec_funded: 1
file:
- access_level: open_access
  checksum: 55426e463fdeafe9777fc3ff635154c7
  content_type: application/pdf
  creator: fmuehlbo
  date_created: 2023-01-27T03:18:34Z
  date_updated: 2023-01-27T03:18:34Z
  file_id: '12408'
  file_name: main.pdf
  file_size: 662409
  relation: main_file
  success: 1
file_date_updated: 2023-01-27T03:18:34Z
has_accepted_license: '1'
keyword:
- runtime monitoring
- best effort
- third party
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: '38'
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication_identifier:
  eissn:
  - 2664-1690
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
  record:
  - id: '12856'
    relation: later_version
    status: public
status: public
title: 'VAMOS: Middleware for Best-Effort Third-Party Monitoring'
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: technical_report
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '12467'
abstract:
- lang: eng
  text: Safety and liveness are elementary concepts of computation, and the foundation
    of many verification paradigms. The safety-liveness classification of boolean
    properties characterizes whether a given property can be falsified by observing
    a finite prefix of an infinite computation trace (always for safety, never for
    liveness). In quantitative specification and verification, properties assign not
    truth values, but quantitative values to infinite traces (e.g., a cost, or the
    distance to a boolean property). We introduce quantitative safety and liveness,
    and we prove that our definitions induce conservative quantitative generalizations
    of both (1)~the safety-progress hierarchy of boolean properties and (2)~the safety-liveness
    decomposition of boolean properties. In particular, we show that every quantitative
    property can be written as the pointwise minimum of a quantitative safety property
    and a quantitative liveness property. Consequently, like boolean properties, also
    quantitative properties can be min-decomposed into safety and liveness parts,
    or alternatively, max-decomposed into co-safety and co-liveness parts. Moreover,
    quantitative properties can be approximated naturally. We prove that every quantitative
    property that has both safe and co-safe approximations can be monitored arbitrarily
    precisely by a monitor that uses only a finite number of states.
acknowledgement: We thank the anonymous reviewers for their helpful comments. This
  work was supported in part by the ERC-2020-AdG 101020093.
alternative_title:
- LNCS
article_processing_charge: No
arxiv: 1
author:
- 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: Nicolas Adrien
  full_name: Mazzocchi, Nicolas Adrien
  id: b26baa86-3308-11ec-87b0-8990f34baa85
  last_name: Mazzocchi
- first_name: Naci E
  full_name: Sarac, Naci E
  id: 8C6B42F8-C8E6-11E9-A03A-F2DCE5697425
  last_name: Sarac
citation:
  ama: 'Henzinger TA, Mazzocchi NA, Sarac NE. Quantitative safety and liveness. In:
    <i>26th International Conference Foundations of Software Science and Computation
    Structures</i>. Vol 13992. Springer Nature; 2023:349-370. doi:<a href="https://doi.org/10.1007/978-3-031-30829-1_17">10.1007/978-3-031-30829-1_17</a>'
  apa: 'Henzinger, T. A., Mazzocchi, N. A., &#38; Sarac, N. E. (2023). Quantitative
    safety and liveness. In <i>26th International Conference Foundations of Software
    Science and Computation Structures</i> (Vol. 13992, pp. 349–370). Paris, France:
    Springer Nature. <a href="https://doi.org/10.1007/978-3-031-30829-1_17">https://doi.org/10.1007/978-3-031-30829-1_17</a>'
  chicago: Henzinger, Thomas A, Nicolas Adrien Mazzocchi, and Naci E Sarac. “Quantitative
    Safety and Liveness.” In <i>26th International Conference Foundations of Software
    Science and Computation Structures</i>, 13992:349–70. Springer Nature, 2023. <a
    href="https://doi.org/10.1007/978-3-031-30829-1_17">https://doi.org/10.1007/978-3-031-30829-1_17</a>.
  ieee: T. A. Henzinger, N. A. Mazzocchi, and N. E. Sarac, “Quantitative safety and
    liveness,” in <i>26th International Conference Foundations of Software Science
    and Computation Structures</i>, Paris, France, 2023, vol. 13992, pp. 349–370.
  ista: 'Henzinger TA, Mazzocchi NA, Sarac NE. 2023. Quantitative safety and liveness.
    26th International Conference Foundations of Software Science and Computation
    Structures. FOSSACS: Foundations of Software Science and Computation Structures,
    LNCS, vol. 13992, 349–370.'
  mla: Henzinger, Thomas A., et al. “Quantitative Safety and Liveness.” <i>26th International
    Conference Foundations of Software Science and Computation Structures</i>, vol.
    13992, Springer Nature, 2023, pp. 349–70, doi:<a href="https://doi.org/10.1007/978-3-031-30829-1_17">10.1007/978-3-031-30829-1_17</a>.
  short: T.A. Henzinger, N.A. Mazzocchi, N.E. Sarac, in:, 26th International Conference
    Foundations of Software Science and Computation Structures, Springer Nature, 2023,
    pp. 349–370.
conference:
  end_date: 2023-04-27
  location: Paris, France
  name: 'FOSSACS: Foundations of Software Science and Computation Structures'
  start_date: 2023-04-22
date_created: 2023-01-31T07:23:56Z
date_published: 2023-04-21T00:00:00Z
date_updated: 2023-07-14T11:20:27Z
day: '21'
ddc:
- '000'
department:
- _id: GradSch
- _id: ToHe
doi: 10.1007/978-3-031-30829-1_17
ec_funded: 1
external_id:
  arxiv:
  - '2301.11175'
file:
- access_level: open_access
  checksum: 981025aed580b6b27c426cb8856cf63e
  content_type: application/pdf
  creator: esarac
  date_created: 2023-01-31T07:22:21Z
  date_updated: 2023-01-31T07:22:21Z
  file_id: '12468'
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  file_size: 449027
  relation: main_file
  success: 1
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  checksum: f16e2af1e0eb243158ab0f0fe74e7d5a
  content_type: application/pdf
  creator: dernst
  date_created: 2023-06-19T10:28:09Z
  date_updated: 2023-06-19T10:28:09Z
  file_id: '13153'
  file_name: 2023_LNCS_HenzingerT.pdf
  file_size: 1048171
  relation: main_file
  success: 1
file_date_updated: 2023-06-19T10:28:09Z
has_accepted_license: '1'
intvolume: '     13992'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: 349-370
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: 26th International Conference Foundations of Software Science and Computation
  Structures
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783031308284'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantitative safety and liveness
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: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 13992
year: '2023'
...
---
_id: '12704'
abstract:
- lang: eng
  text: Adversarial training (i.e., training on adversarially perturbed input data)
    is a well-studied method for making neural networks robust to potential adversarial
    attacks during inference. However, the improved robustness does not come for free
    but rather is accompanied by a decrease in overall model accuracy and performance.
    Recent work has shown that, in practical robot learning applications, the effects
    of adversarial training do not pose a fair trade-off but inflict a net loss when
    measured in holistic robot performance. This work revisits the robustness-accuracy
    trade-off in robot learning by systematically analyzing if recent advances in
    robust training methods and theory in conjunction with adversarial robot learning,
    are capable of making adversarial training suitable for real-world robot applications.
    We evaluate three different robot learning tasks ranging from autonomous driving
    in a high-fidelity environment amenable to sim-to-real deployment to mobile robot
    navigation and gesture recognition. Our results demonstrate that, while these
    techniques make incremental improvements on the trade-off on a relative scale,
    the negative impact on the nominal accuracy caused by adversarial training still
    outweighs the improved robustness by an order of magnitude. We conclude that although
    progress is happening, further advances in robust learning methods are necessary
    before they can benefit robot learning tasks in practice.
acknowledgement: "We thank Christoph Lampert for inspiring this work. The\r\nviews
  and conclusions contained in this document are those of\r\nthe authors and should
  not be interpreted as representing the\r\nofficial policies, either expressed or
  implied, of the United States\r\nAir Force or the U.S. Government. The U.S. Government
  is\r\nauthorized to reproduce and distribute reprints for Government\r\npurposes
  notwithstanding any copyright notation herein."
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: Alexander
  full_name: Amini, Alexander
  last_name: Amini
- first_name: Daniela
  full_name: Rus, Daniela
  last_name: Rus
- 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, Amini A, Rus D, Henzinger TA. Revisiting the adversarial robustness-accuracy
    tradeoff in robot learning. <i>IEEE Robotics and Automation Letters</i>. 2023;8(3):1595-1602.
    doi:<a href="https://doi.org/10.1109/LRA.2023.3240930">10.1109/LRA.2023.3240930</a>
  apa: Lechner, M., Amini, A., Rus, D., &#38; Henzinger, T. A. (2023). Revisiting
    the adversarial robustness-accuracy tradeoff in robot learning. <i>IEEE Robotics
    and Automation Letters</i>. Institute of Electrical and Electronics Engineers.
    <a href="https://doi.org/10.1109/LRA.2023.3240930">https://doi.org/10.1109/LRA.2023.3240930</a>
  chicago: Lechner, Mathias, Alexander Amini, Daniela Rus, and Thomas A Henzinger.
    “Revisiting the Adversarial Robustness-Accuracy Tradeoff in Robot Learning.” <i>IEEE
    Robotics and Automation Letters</i>. Institute of Electrical and Electronics Engineers,
    2023. <a href="https://doi.org/10.1109/LRA.2023.3240930">https://doi.org/10.1109/LRA.2023.3240930</a>.
  ieee: M. Lechner, A. Amini, D. Rus, and T. A. Henzinger, “Revisiting the adversarial
    robustness-accuracy tradeoff in robot learning,” <i>IEEE Robotics and Automation
    Letters</i>, vol. 8, no. 3. Institute of Electrical and Electronics Engineers,
    pp. 1595–1602, 2023.
  ista: Lechner M, Amini A, Rus D, Henzinger TA. 2023. Revisiting the adversarial
    robustness-accuracy tradeoff in robot learning. IEEE Robotics and Automation Letters.
    8(3), 1595–1602.
  mla: Lechner, Mathias, et al. “Revisiting the Adversarial Robustness-Accuracy Tradeoff
    in Robot Learning.” <i>IEEE Robotics and Automation Letters</i>, vol. 8, no. 3,
    Institute of Electrical and Electronics Engineers, 2023, pp. 1595–602, doi:<a
    href="https://doi.org/10.1109/LRA.2023.3240930">10.1109/LRA.2023.3240930</a>.
  short: M. Lechner, A. Amini, D. Rus, T.A. Henzinger, IEEE Robotics and Automation
    Letters 8 (2023) 1595–1602.
date_created: 2023-03-05T23:01:04Z
date_published: 2023-03-01T00:00:00Z
date_updated: 2023-08-01T13:36:50Z
day: '01'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1109/LRA.2023.3240930
external_id:
  arxiv:
  - '2204.07373'
  isi:
  - '000936534100012'
file:
- access_level: open_access
  checksum: 5a75dcd326ea66685de2b1aaec259e85
  content_type: application/pdf
  creator: cchlebak
  date_created: 2023-03-07T12:22:23Z
  date_updated: 2023-03-07T12:22:23Z
  file_id: '12714'
  file_name: 2023_IEEERobAutLetters_Lechner.pdf
  file_size: 944052
  relation: main_file
  success: 1
file_date_updated: 2023-03-07T12:22:23Z
has_accepted_license: '1'
intvolume: '         8'
isi: 1
issue: '3'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 1595-1602
publication: IEEE Robotics and Automation Letters
publication_identifier:
  eissn:
  - 2377-3766
publication_status: published
publisher: Institute of Electrical and Electronics Engineers
quality_controlled: '1'
related_material:
  record:
  - id: '11366'
    relation: earlier_version
    status: public
scopus_import: '1'
status: public
title: Revisiting the adversarial robustness-accuracy tradeoff in robot learning
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 8
year: '2023'
...
---
_id: '12854'
abstract:
- lang: eng
  text: "The main idea behind BUBAAK is to run multiple program analyses in parallel
    and use runtime monitoring and enforcement to observe and control their progress
    in real time. The analyses send information about (un)explored states of the program
    and discovered invariants to a monitor. The monitor processes the received data
    and can force an analysis to stop the search of certain program parts (which have
    already been analyzed by other analyses), or to make it utilize a program invariant
    found by another analysis.\r\nAt SV-COMP  2023, the implementation of data exchange
    between the monitor and the analyses was not yet completed, which is why BUBAAK
    only ran several analyses in parallel, without any coordination. Still, BUBAAK
    won the meta-category FalsificationOverall and placed very well in several other
    (sub)-categories of the competition."
acknowledgement: This work was supported by the ERC-2020-AdG 10102009 grant.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Marek
  full_name: Chalupa, Marek
  id: 87e34708-d6c6-11ec-9f5b-9391e7be2463
  last_name: Chalupa
- 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: 'Chalupa M, Henzinger TA. Bubaak: Runtime monitoring of program verifiers.
    In: <i>Tools and Algorithms for the Construction and Analysis of Systems</i>.
    Vol 13994. Springer Nature; 2023:535-540. doi:<a href="https://doi.org/10.1007/978-3-031-30820-8_32">10.1007/978-3-031-30820-8_32</a>'
  apa: 'Chalupa, M., &#38; Henzinger, T. A. (2023). Bubaak: Runtime monitoring of
    program verifiers. In <i>Tools and Algorithms for the Construction and Analysis
    of Systems</i> (Vol. 13994, pp. 535–540). Paris, France: Springer Nature. <a href="https://doi.org/10.1007/978-3-031-30820-8_32">https://doi.org/10.1007/978-3-031-30820-8_32</a>'
  chicago: 'Chalupa, Marek, and Thomas A Henzinger. “Bubaak: Runtime Monitoring of
    Program Verifiers.” In <i>Tools and Algorithms for the Construction and Analysis
    of Systems</i>, 13994:535–40. Springer Nature, 2023. <a href="https://doi.org/10.1007/978-3-031-30820-8_32">https://doi.org/10.1007/978-3-031-30820-8_32</a>.'
  ieee: 'M. Chalupa and T. A. Henzinger, “Bubaak: Runtime monitoring of program verifiers,”
    in <i>Tools and Algorithms for the Construction and Analysis of Systems</i>, Paris,
    France, 2023, vol. 13994, pp. 535–540.'
  ista: 'Chalupa M, Henzinger TA. 2023. Bubaak: Runtime monitoring of program verifiers.
    Tools and Algorithms for the Construction and Analysis of Systems. TACAS: Tools
    and Algorithms for the Construction and Analysis of Systems, LNCS, vol. 13994,
    535–540.'
  mla: 'Chalupa, Marek, and Thomas A. Henzinger. “Bubaak: Runtime Monitoring of Program
    Verifiers.” <i>Tools and Algorithms for the Construction and Analysis of Systems</i>,
    vol. 13994, Springer Nature, 2023, pp. 535–40, doi:<a href="https://doi.org/10.1007/978-3-031-30820-8_32">10.1007/978-3-031-30820-8_32</a>.'
  short: M. Chalupa, T.A. Henzinger, in:, Tools and Algorithms for the Construction
    and Analysis of Systems, Springer Nature, 2023, pp. 535–540.
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: 2023-04-20T08:22:53Z
date_published: 2023-04-20T00:00:00Z
date_updated: 2023-04-25T07:02:43Z
day: '20'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1007/978-3-031-30820-8_32
ec_funded: 1
file:
- access_level: open_access
  checksum: 120d2c2a38384058ad0630fdf8288312
  content_type: application/pdf
  creator: dernst
  date_created: 2023-04-25T06:58:36Z
  date_updated: 2023-04-25T06:58:36Z
  file_id: '12864'
  file_name: 2023_LNCS_Chalupa.pdf
  file_size: 16096413
  relation: main_file
  success: 1
file_date_updated: 2023-04-25T06:58:36Z
has_accepted_license: '1'
intvolume: '     13994'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: 535-540
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: Tools and Algorithms for the Construction and Analysis of Systems
publication_identifier:
  eisbn:
  - '9783031308208'
  eissn:
  - 1611-3349
  isbn:
  - '9783031308192'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: 'Bubaak: Runtime monitoring of program verifiers'
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: 13994
year: '2023'
...
---
_id: '12856'
abstract:
- lang: eng
  text: "As the complexity and criticality of software increase every year, so does
    the importance of run-time monitoring. Third-party monitoring, with limited knowledge
    of the monitored software, and best-effort monitoring, which keeps pace with the
    monitored software, are especially valuable, yet underexplored areas of run-time
    monitoring. Most existing monitoring frameworks do not support their combination
    because they either require access to the monitored code for instrumentation purposes
    or the processing of all observed events, or both.\r\n\r\nWe present a middleware
    framework, VAMOS, for the run-time monitoring of software which is explicitly
    designed to support third-party and best-effort scenarios. The design goals of
    VAMOS are (i) efficiency (keeping pace at low overhead), (ii) flexibility (the
    ability to monitor black-box code through a variety of different event channels,
    and the connectability to monitors written in different specification languages),
    and (iii) ease-of-use. To achieve its goals, VAMOS combines aspects of event broker
    and event recognition systems with aspects of stream processing systems.\r\nWe
    implemented a prototype toolchain for VAMOS and conducted experiments including
    a case study of monitoring for data races. The results indicate that VAMOS enables
    writing useful yet efficient monitors, is compatible with a variety of event sources
    and monitor specifications, and simplifies key aspects of setting up a monitoring
    system from scratch."
acknowledgement: This work was supported in part by the ERC-2020-AdG 101020093. The
  authors would like to thank the anonymous FASE reviewers for their valuable feedback
  and suggestions.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Marek
  full_name: Chalupa, Marek
  id: 87e34708-d6c6-11ec-9f5b-9391e7be2463
  last_name: Chalupa
- first_name: Fabian
  full_name: Mühlböck, Fabian
  id: 6395C5F6-89DF-11E9-9C97-6BDFE5697425
  last_name: Mühlböck
  orcid: 0000-0003-1548-0177
- first_name: Stefanie
  full_name: Muroya Lei, Stefanie
  id: a376de31-8972-11ed-ae7b-d0251c13c8ff
  last_name: Muroya Lei
- 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: 'Chalupa M, Mühlböck F, Muroya Lei S, Henzinger TA. Vamos: Middleware for best-effort
    third-party monitoring. In: <i>Fundamental Approaches to Software Engineering</i>.
    Vol 13991. Springer Nature; 2023:260-281. doi:<a href="https://doi.org/10.1007/978-3-031-30826-0_15">10.1007/978-3-031-30826-0_15</a>'
  apa: 'Chalupa, M., Mühlböck, F., Muroya Lei, S., &#38; Henzinger, T. A. (2023).
    Vamos: Middleware for best-effort third-party monitoring. In <i>Fundamental Approaches
    to Software Engineering</i> (Vol. 13991, pp. 260–281). Paris, France: Springer
    Nature. <a href="https://doi.org/10.1007/978-3-031-30826-0_15">https://doi.org/10.1007/978-3-031-30826-0_15</a>'
  chicago: 'Chalupa, Marek, Fabian Mühlböck, Stefanie Muroya Lei, and Thomas A Henzinger.
    “Vamos: Middleware for Best-Effort Third-Party Monitoring.” In <i>Fundamental
    Approaches to Software Engineering</i>, 13991:260–81. Springer Nature, 2023. <a
    href="https://doi.org/10.1007/978-3-031-30826-0_15">https://doi.org/10.1007/978-3-031-30826-0_15</a>.'
  ieee: 'M. Chalupa, F. Mühlböck, S. Muroya Lei, and T. A. Henzinger, “Vamos: Middleware
    for best-effort third-party monitoring,” in <i>Fundamental Approaches to Software
    Engineering</i>, Paris, France, 2023, vol. 13991, pp. 260–281.'
  ista: 'Chalupa M, Mühlböck F, Muroya Lei S, Henzinger TA. 2023. Vamos: Middleware
    for best-effort third-party monitoring. Fundamental Approaches to Software Engineering.
    FASE: Fundamental Approaches to Software Engineering, LNCS, vol. 13991, 260–281.'
  mla: 'Chalupa, Marek, et al. “Vamos: Middleware for Best-Effort Third-Party Monitoring.”
    <i>Fundamental Approaches to Software Engineering</i>, vol. 13991, Springer Nature,
    2023, pp. 260–81, doi:<a href="https://doi.org/10.1007/978-3-031-30826-0_15">10.1007/978-3-031-30826-0_15</a>.'
  short: M. Chalupa, F. Mühlböck, S. Muroya Lei, T.A. Henzinger, in:, Fundamental
    Approaches to Software Engineering, Springer Nature, 2023, pp. 260–281.
conference:
  end_date: 2023-04-27
  location: Paris, France
  name: 'FASE: Fundamental Approaches to Software Engineering'
  start_date: 2023-04-22
date_created: 2023-04-20T08:29:42Z
date_published: 2023-04-20T00:00:00Z
date_updated: 2023-04-25T07:19:07Z
day: '20'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1007/978-3-031-30826-0_15
ec_funded: 1
file:
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  checksum: 17a7c8e08be609cf2408d37ea55e322c
  content_type: application/pdf
  creator: dernst
  date_created: 2023-04-25T07:16:36Z
  date_updated: 2023-04-25T07:16:36Z
  file_id: '12865'
  file_name: 2023_LNCS_ChalupaM.pdf
  file_size: 580828
  relation: main_file
  success: 1
file_date_updated: 2023-04-25T07:16:36Z
has_accepted_license: '1'
intvolume: '     13991'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: 260-281
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: Fundamental Approaches to Software Engineering
publication_identifier:
  eisbn:
  - '9783031308260'
  eissn:
  - 1611-3349
  isbn:
  - '9783031308253'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '12407'
    relation: earlier_version
    status: public
status: public
title: 'Vamos: Middleware for best-effort third-party monitoring'
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: 13991
year: '2023'
...
---
_id: '12876'
abstract:
- lang: eng
  text: "Motivation: The problem of model inference is of fundamental importance to
    systems biology. Logical models (e.g. Boolean networks; BNs) represent a computationally
    attractive approach capable of handling large biological networks. The models
    are typically inferred from experimental data. However, even with a substantial
    amount of experimental data supported by some prior knowledge, existing inference
    methods often focus on a small sample of admissible candidate models only.\r\n\r\nResults:
    We propose Boolean network sketches as a new formal instrument for the inference
    of Boolean networks. A sketch integrates (typically partial) knowledge about the
    network’s topology and the update logic (obtained through, e.g. a biological knowledge
    base or a literature search), as well as further assumptions about the properties
    of the network’s transitions (e.g. the form of its attractor landscape), and additional
    restrictions on the model dynamics given by the measured experimental data. Our
    new BNs inference algorithm starts with an ‘initial’ sketch, which is extended
    by adding restrictions representing experimental data to a ‘data-informed’ sketch
    and subsequently computes all BNs consistent with the data-informed sketch. Our
    algorithm is based on a symbolic representation and coloured model-checking. Our
    approach is unique in its ability to cover a broad spectrum of knowledge and efficiently
    produce a compact representation of all inferred BNs. We evaluate the method on
    a non-trivial collection of real-world and simulated data."
acknowledgement: This work was partially supported by GACR [grant No. GA22-10845S];
  and Grant Agency of Masaryk University [grant No. MUNI/G/1771/2020]. This work was
  partially supported by European Union’s Horizon 2020 research and innovation programme
  under the Marie Skłodowska-Curie [Grant Agreement No. 101034413 to S.P.].
article_number: btad158
article_processing_charge: No
article_type: original
author:
- first_name: Nikola
  full_name: Beneš, Nikola
  last_name: Beneš
- first_name: Luboš
  full_name: Brim, Luboš
  last_name: Brim
- first_name: Ondřej
  full_name: Huvar, Ondřej
  last_name: Huvar
- first_name: Samuel
  full_name: Pastva, Samuel
  id: 07c5ea74-f61c-11ec-a664-aa7c5d957b2b
  last_name: Pastva
- first_name: David
  full_name: Šafránek, David
  last_name: Šafránek
citation:
  ama: 'Beneš N, Brim L, Huvar O, Pastva S, Šafránek D. Boolean network sketches:
    A unifying framework for logical model inference. <i>Bioinformatics</i>. 2023;39(4).
    doi:<a href="https://doi.org/10.1093/bioinformatics/btad158">10.1093/bioinformatics/btad158</a>'
  apa: 'Beneš, N., Brim, L., Huvar, O., Pastva, S., &#38; Šafránek, D. (2023). Boolean
    network sketches: A unifying framework for logical model inference. <i>Bioinformatics</i>.
    Oxford Academic. <a href="https://doi.org/10.1093/bioinformatics/btad158">https://doi.org/10.1093/bioinformatics/btad158</a>'
  chicago: 'Beneš, Nikola, Luboš Brim, Ondřej Huvar, Samuel Pastva, and David Šafránek.
    “Boolean Network Sketches: A Unifying Framework for Logical Model Inference.”
    <i>Bioinformatics</i>. Oxford Academic, 2023. <a href="https://doi.org/10.1093/bioinformatics/btad158">https://doi.org/10.1093/bioinformatics/btad158</a>.'
  ieee: 'N. Beneš, L. Brim, O. Huvar, S. Pastva, and D. Šafránek, “Boolean network
    sketches: A unifying framework for logical model inference,” <i>Bioinformatics</i>,
    vol. 39, no. 4. Oxford Academic, 2023.'
  ista: 'Beneš N, Brim L, Huvar O, Pastva S, Šafránek D. 2023. Boolean network sketches:
    A unifying framework for logical model inference. Bioinformatics. 39(4), btad158.'
  mla: 'Beneš, Nikola, et al. “Boolean Network Sketches: A Unifying Framework for
    Logical Model Inference.” <i>Bioinformatics</i>, vol. 39, no. 4, btad158, Oxford
    Academic, 2023, doi:<a href="https://doi.org/10.1093/bioinformatics/btad158">10.1093/bioinformatics/btad158</a>.'
  short: N. Beneš, L. Brim, O. Huvar, S. Pastva, D. Šafránek, Bioinformatics 39 (2023).
date_created: 2023-04-30T22:01:05Z
date_published: 2023-04-03T00:00:00Z
date_updated: 2023-08-01T14:27:28Z
day: '03'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1093/bioinformatics/btad158
ec_funded: 1
external_id:
  isi:
  - '000976610800001'
  pmid:
  - '37004199'
file:
- access_level: open_access
  checksum: 2cb90ddf781baefddf47eac4b54e2a03
  content_type: application/pdf
  creator: dernst
  date_created: 2023-05-02T07:39:04Z
  date_updated: 2023-05-02T07:39:04Z
  file_id: '12886'
  file_name: 2023_Bioinformatics_Benes.pdf
  file_size: 478740
  relation: main_file
  success: 1
file_date_updated: 2023-05-02T07:39:04Z
has_accepted_license: '1'
intvolume: '        39'
isi: 1
issue: '4'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c
  call_identifier: H2020
  grant_number: '101034413'
  name: 'IST-BRIDGE: International postdoctoral program'
publication: Bioinformatics
publication_identifier:
  eissn:
  - 1367-4811
publication_status: published
publisher: Oxford Academic
quality_controlled: '1'
related_material:
  link:
  - relation: software
    url: https://doi.org/10.5281/zenodo.7688740
scopus_import: '1'
status: public
title: 'Boolean network sketches: A unifying framework for logical model inference'
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: 39
year: '2023'
...
---
_id: '13141'
abstract:
- lang: eng
  text: "We automatically compute a new class of environment assumptions in two-player
    turn-based finite graph games which characterize an “adequate cooperation” needed
    from the environment to allow the system player to win. Given an ω-regular winning
    condition Φ for the system player, we compute an ω-regular assumption Ψ for the
    environment player, such that (i) every environment strategy compliant with Ψ
    allows the system to fulfill Φ (sufficiency), (ii) Ψ\r\n can be fulfilled by the
    environment for every strategy of the system (implementability), and (iii) Ψ does
    not prevent any cooperative strategy choice (permissiveness).\r\nFor parity games,
    which are canonical representations of ω-regular games, we present a polynomial-time
    algorithm for the symbolic computation of adequately permissive assumptions and
    show that our algorithm runs faster and produces better assumptions than existing
    approaches—both theoretically and empirically. To the best of our knowledge, for
    ω\r\n-regular games, we provide the first algorithm to compute sufficient and
    implementable environment assumptions that are also permissive."
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Ashwani
  full_name: Anand, Ashwani
  last_name: Anand
- first_name: Kaushik
  full_name: Mallik, Kaushik
  id: 0834ff3c-6d72-11ec-94e0-b5b0a4fb8598
  last_name: Mallik
  orcid: 0000-0001-9864-7475
- first_name: Satya Prakash
  full_name: Nayak, Satya Prakash
  last_name: Nayak
- first_name: Anne Kathrin
  full_name: Schmuck, Anne Kathrin
  last_name: Schmuck
citation:
  ama: 'Anand A, Mallik K, Nayak SP, Schmuck AK. Computing adequately permissive assumptions
    for synthesis. In: <i>TACAS 2023: Tools and Algorithms for the Construction and
    Analysis of Systems</i>. Vol 13994. Springer Nature; 2023:211-228. doi:<a href="https://doi.org/10.1007/978-3-031-30820-8_15">10.1007/978-3-031-30820-8_15</a>'
  apa: 'Anand, A., Mallik, K., Nayak, S. P., &#38; Schmuck, A. K. (2023). Computing
    adequately permissive assumptions for synthesis. In <i>TACAS 2023: Tools and Algorithms
    for the Construction and Analysis of Systems</i> (Vol. 13994, pp. 211–228). Paris,
    France: Springer Nature. <a href="https://doi.org/10.1007/978-3-031-30820-8_15">https://doi.org/10.1007/978-3-031-30820-8_15</a>'
  chicago: 'Anand, Ashwani, Kaushik Mallik, Satya Prakash Nayak, and Anne Kathrin
    Schmuck. “Computing Adequately Permissive Assumptions for Synthesis.” In <i>TACAS
    2023: Tools and Algorithms for the Construction and Analysis of Systems</i>, 13994:211–28.
    Springer Nature, 2023. <a href="https://doi.org/10.1007/978-3-031-30820-8_15">https://doi.org/10.1007/978-3-031-30820-8_15</a>.'
  ieee: 'A. Anand, K. Mallik, S. P. Nayak, and A. K. Schmuck, “Computing adequately
    permissive assumptions for synthesis,” in <i>TACAS 2023: Tools and Algorithms
    for the Construction and Analysis of Systems</i>, Paris, France, 2023, vol. 13994,
    pp. 211–228.'
  ista: 'Anand A, Mallik K, Nayak SP, Schmuck AK. 2023. Computing adequately permissive
    assumptions for synthesis. 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. 13994, 211–228.'
  mla: 'Anand, Ashwani, et al. “Computing Adequately Permissive Assumptions for Synthesis.”
    <i>TACAS 2023: Tools and Algorithms for the Construction and Analysis of Systems</i>,
    vol. 13994, Springer Nature, 2023, pp. 211–28, doi:<a href="https://doi.org/10.1007/978-3-031-30820-8_15">10.1007/978-3-031-30820-8_15</a>.'
  short: 'A. Anand, K. Mallik, S.P. Nayak, A.K. Schmuck, in:, TACAS 2023: Tools and
    Algorithms for the Construction and Analysis of Systems, Springer Nature, 2023,
    pp. 211–228.'
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: 2023-04-20T00:00:00Z
date_updated: 2023-06-19T08:49:46Z
day: '20'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1007/978-3-031-30820-8_15
file:
- access_level: open_access
  checksum: 60dcafc1b4f6f070be43bad3fe877974
  content_type: application/pdf
  creator: dernst
  date_created: 2023-06-19T08:43:21Z
  date_updated: 2023-06-19T08:43:21Z
  file_id: '13151'
  file_name: 2023_LNCS_Anand.pdf
  file_size: 521425
  relation: main_file
  success: 1
file_date_updated: 2023-06-19T08:43:21Z
has_accepted_license: '1'
intvolume: '     13994'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: 211-228
publication: 'TACAS 2023: Tools and Algorithms for the Construction and Analysis of
  Systems'
publication_identifier:
  eissn:
  - 1611-3349
  isbn:
  - '9783031308192'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Computing adequately permissive assumptions for synthesis
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: 13994
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'
...
---
_id: '13221'
abstract:
- lang: eng
  text: The safety-liveness dichotomy is a fundamental concept in formal languages
    which plays a key role in verification. Recently, this dichotomy has been lifted
    to quantitative properties, which are arbitrary functions from infinite words
    to partially-ordered domains. We look into harnessing the dichotomy for the specific
    classes of quantitative properties expressed by quantitative automata. These automata
    contain finitely many states and rational-valued transition weights, and their
    common value functions Inf, Sup, LimInf, LimSup, LimInfAvg, LimSupAvg, and DSum
    map infinite words into the totallyordered domain of real numbers. In this automata-theoretic
    setting, we establish a connection between quantitative safety and topological
    continuity and provide an alternative characterization of quantitative safety
    and liveness in terms of their boolean counterparts. For all common value functions,
    we show how the safety closure of a quantitative automaton can be constructed
    in PTime, and we provide PSpace-complete checks of whether a given quantitative
    automaton is safe or live, with the exception of LimInfAvg and LimSupAvg automata,
    for which the safety check is in ExpSpace. Moreover, for deterministic Sup, LimInf,
    and LimSup automata, we give PTime decompositions into safe and live automata.
    These decompositions enable the separation of techniques for safety and liveness
    verification for quantitative specifications.
acknowledgement: We thank Christof Löding for pointing us to some results on PSpace-hardess
  of universality problems and the anonymous reviewers for their helpful comments.
  This work was supported in part by the ERC-2020-AdG 101020093 and the Israel Science
  Foundation grant 2410/22.
alternative_title:
- LIPIcs
article_number: '17'
article_processing_charge: No
arxiv: 1
author:
- first_name: Udi
  full_name: Boker, Udi
  id: 31E297B6-F248-11E8-B48F-1D18A9856A87
  last_name: Boker
- 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: Nicolas Adrien
  full_name: Mazzocchi, Nicolas Adrien
  id: b26baa86-3308-11ec-87b0-8990f34baa85
  last_name: Mazzocchi
- first_name: Naci E
  full_name: Sarac, Naci E
  id: 8C6B42F8-C8E6-11E9-A03A-F2DCE5697425
  last_name: Sarac
citation:
  ama: 'Boker U, Henzinger TA, Mazzocchi NA, Sarac NE. Safety and liveness of quantitative
    automata. In: <i>34th International Conference on Concurrency Theory</i>. Vol
    279. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2023. doi:<a href="https://doi.org/10.4230/LIPIcs.CONCUR.2023.17">10.4230/LIPIcs.CONCUR.2023.17</a>'
  apa: 'Boker, U., Henzinger, T. A., Mazzocchi, N. A., &#38; Sarac, N. E. (2023).
    Safety and liveness of quantitative automata. In <i>34th International Conference
    on Concurrency Theory</i> (Vol. 279). Antwerp, Belgium: Schloss Dagstuhl - Leibniz-Zentrum
    für Informatik. <a href="https://doi.org/10.4230/LIPIcs.CONCUR.2023.17">https://doi.org/10.4230/LIPIcs.CONCUR.2023.17</a>'
  chicago: Boker, Udi, Thomas A Henzinger, Nicolas Adrien Mazzocchi, and Naci E Sarac.
    “Safety and Liveness of Quantitative Automata.” In <i>34th International Conference
    on Concurrency Theory</i>, Vol. 279. Schloss Dagstuhl - Leibniz-Zentrum für Informatik,
    2023. <a href="https://doi.org/10.4230/LIPIcs.CONCUR.2023.17">https://doi.org/10.4230/LIPIcs.CONCUR.2023.17</a>.
  ieee: U. Boker, T. A. Henzinger, N. A. Mazzocchi, and N. E. Sarac, “Safety and liveness
    of quantitative automata,” in <i>34th International Conference on Concurrency
    Theory</i>, Antwerp, Belgium, 2023, vol. 279.
  ista: 'Boker U, Henzinger TA, Mazzocchi NA, Sarac NE. 2023. Safety and liveness
    of quantitative automata. 34th International Conference on Concurrency Theory.
    CONCUR: Conference on Concurrency Theory, LIPIcs, vol. 279, 17.'
  mla: Boker, Udi, et al. “Safety and Liveness of Quantitative Automata.” <i>34th
    International Conference on Concurrency Theory</i>, vol. 279, 17, Schloss Dagstuhl
    - Leibniz-Zentrum für Informatik, 2023, doi:<a href="https://doi.org/10.4230/LIPIcs.CONCUR.2023.17">10.4230/LIPIcs.CONCUR.2023.17</a>.
  short: U. Boker, T.A. Henzinger, N.A. Mazzocchi, N.E. Sarac, in:, 34th International
    Conference on Concurrency Theory, Schloss Dagstuhl - Leibniz-Zentrum für Informatik,
    2023.
conference:
  end_date: 2023-09-23
  location: Antwerp, Belgium
  name: 'CONCUR: Conference on Concurrency Theory'
  start_date: 2023-09-18
date_created: 2023-07-14T10:00:15Z
date_published: 2023-09-01T00:00:00Z
date_updated: 2023-10-09T07:14:03Z
day: '01'
ddc:
- '000'
department:
- _id: GradSch
- _id: ToHe
doi: 10.4230/LIPIcs.CONCUR.2023.17
ec_funded: 1
external_id:
  arxiv:
  - '2307.06016'
file:
- access_level: open_access
  checksum: d40e57a04448ea5c77d7e1cfb9590a81
  content_type: application/pdf
  creator: esarac
  date_created: 2023-07-14T12:03:48Z
  date_updated: 2023-07-14T12:03:48Z
  file_id: '13224'
  file_name: CONCUR23.pdf
  file_size: 755529
  relation: main_file
  success: 1
file_date_updated: 2023-07-14T12:03:48Z
has_accepted_license: '1'
intvolume: '       279'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: 34th International Conference on Concurrency Theory
publication_identifier:
  eissn:
  - 1868-8969
  isbn:
  - '9783959772990'
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
status: public
title: Safety and liveness of quantitative automata
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: 279
year: '2023'
...
---
_id: '13228'
abstract:
- lang: eng
  text: A machine-learned system that is fair in static decision-making tasks may
    have biased societal impacts in the long-run. This may happen when the system
    interacts with humans and feedback patterns emerge, reinforcing old biases in
    the system and creating new biases. While existing works try to identify and mitigate
    long-run biases through smart system design, we introduce techniques for monitoring
    fairness in real time. Our goal is to build and deploy a monitor that will continuously
    observe a long sequence of events generated by the system in the wild, and will
    output, with each event, a verdict on how fair the system is at the current point
    in time. The advantages of monitoring are two-fold. Firstly, fairness is evaluated
    at run-time, which is important because unfair behaviors may not be eliminated
    a priori, at design-time, due to partial knowledge about the system and the environment,
    as well as uncertainties and dynamic changes in the system and the environment,
    such as the unpredictability of human behavior. Secondly, monitors are by design
    oblivious to how the monitored system is constructed, which makes them suitable
    to be used as trusted third-party fairness watchdogs. They function as computationally
    lightweight statistical estimators, and their correctness proofs rely on the rigorous
    analysis of the stochastic process that models the assumptions about the underlying
    dynamics of the system. We show, both in theory and experiments, how monitors
    can warn us (1) if a bank’s credit policy over time has created an unfair distribution
    of credit scores among the population, and (2) if a resource allocator’s allocation
    policy over time has made unfair allocations. Our experiments demonstrate that
    the monitors introduce very low overhead. We believe that runtime monitoring is
    an important and mathematically rigorous new addition to the fairness toolbox.
acknowledgement: 'The authors would like to thank the anonymous reviewers for their
  valuable comments and helpful suggestions. This work is supported by the European
  Research Council under Grant No.: ERC-2020-AdG 101020093.'
article_processing_charge: No
arxiv: 1
author:
- 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: Mahyar
  full_name: Karimi, Mahyar
  last_name: Karimi
- first_name: Konstantin
  full_name: Kueffner, Konstantin
  id: 8121a2d0-dc85-11ea-9058-af578f3b4515
  last_name: Kueffner
  orcid: 0000-0001-8974-2542
- first_name: Kaushik
  full_name: Mallik, Kaushik
  id: 0834ff3c-6d72-11ec-94e0-b5b0a4fb8598
  last_name: Mallik
  orcid: 0000-0001-9864-7475
citation:
  ama: 'Henzinger TA, Karimi M, Kueffner K, Mallik K. Runtime monitoring of dynamic
    fairness properties. In: <i>FAccT ’23: Proceedings of the 2023 ACM Conference
    on Fairness, Accountability, and Transparency</i>. Association for Computing Machinery;
    2023:604-614. doi:<a href="https://doi.org/10.1145/3593013.3594028">10.1145/3593013.3594028</a>'
  apa: 'Henzinger, T. A., Karimi, M., Kueffner, K., &#38; Mallik, K. (2023). Runtime
    monitoring of dynamic fairness properties. In <i>FAccT ’23: Proceedings of the
    2023 ACM Conference on Fairness, Accountability, and Transparency</i> (pp. 604–614).
    Chicago, IL, United States: Association for Computing Machinery. <a href="https://doi.org/10.1145/3593013.3594028">https://doi.org/10.1145/3593013.3594028</a>'
  chicago: 'Henzinger, Thomas A, Mahyar Karimi, Konstantin Kueffner, and Kaushik Mallik.
    “Runtime Monitoring of Dynamic Fairness Properties.” In <i>FAccT ’23: Proceedings
    of the 2023 ACM Conference on Fairness, Accountability, and Transparency</i>,
    604–14. Association for Computing Machinery, 2023. <a href="https://doi.org/10.1145/3593013.3594028">https://doi.org/10.1145/3593013.3594028</a>.'
  ieee: 'T. A. Henzinger, M. Karimi, K. Kueffner, and K. Mallik, “Runtime monitoring
    of dynamic fairness properties,” in <i>FAccT ’23: Proceedings of the 2023 ACM
    Conference on Fairness, Accountability, and Transparency</i>, Chicago, IL, United
    States, 2023, pp. 604–614.'
  ista: 'Henzinger TA, Karimi M, Kueffner K, Mallik K. 2023. Runtime monitoring of
    dynamic fairness properties. FAccT ’23: Proceedings of the 2023 ACM Conference
    on Fairness, Accountability, and Transparency. FAccT: Conference on Fairness,
    Accountability and Transparency, 604–614.'
  mla: 'Henzinger, Thomas A., et al. “Runtime Monitoring of Dynamic Fairness Properties.”
    <i>FAccT ’23: Proceedings of the 2023 ACM Conference on Fairness, Accountability,
    and Transparency</i>, Association for Computing Machinery, 2023, pp. 604–14, doi:<a
    href="https://doi.org/10.1145/3593013.3594028">10.1145/3593013.3594028</a>.'
  short: 'T.A. Henzinger, M. Karimi, K. Kueffner, K. Mallik, in:, FAccT ’23: Proceedings
    of the 2023 ACM Conference on Fairness, Accountability, and Transparency, Association
    for Computing Machinery, 2023, pp. 604–614.'
conference:
  end_date: 2023-06-15
  location: Chicago, IL, United States
  name: 'FAccT: Conference on Fairness, Accountability and Transparency'
  start_date: 2023-06-12
date_created: 2023-07-16T22:01:09Z
date_published: 2023-06-12T00:00:00Z
date_updated: 2023-12-13T11:30:31Z
day: '12'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1145/3593013.3594028
ec_funded: 1
external_id:
  arxiv:
  - '2305.04699'
  isi:
  - '001062819300057'
file:
- access_level: open_access
  checksum: 96c759db9cdf94b81e37871a66a6ff48
  content_type: application/pdf
  creator: dernst
  date_created: 2023-07-18T07:43:10Z
  date_updated: 2023-07-18T07:43:10Z
  file_id: '13245'
  file_name: 2023_ACM_HenzingerT.pdf
  file_size: 4100596
  relation: main_file
  success: 1
file_date_updated: 2023-07-18T07:43:10Z
has_accepted_license: '1'
isi: 1
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 604-614
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: 'FAccT ''23: Proceedings of the 2023 ACM Conference on Fairness, Accountability,
  and Transparency'
publication_identifier:
  isbn:
  - '9781450372527'
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: Runtime monitoring of dynamic fairness properties
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
year: '2023'
...
---
_id: '13234'
abstract:
- lang: eng
  text: Neural-network classifiers achieve high accuracy when predicting the class
    of an input that they were trained to identify. Maintaining this accuracy in dynamic
    environments, where inputs frequently fall outside the fixed set of initially
    known classes, remains a challenge. We consider the problem of monitoring the
    classification decisions of neural networks in the presence of novel classes.
    For this purpose, we generalize our recently proposed abstraction-based monitor
    from binary output to real-valued quantitative output. This quantitative output
    enables new applications, two of which we investigate in the paper. As our first
    application, we introduce an algorithmic framework for active monitoring of a
    neural network, which allows us to learn new classes dynamically and yet maintain
    high monitoring performance. As our second application, we present an offline
    procedure to retrain the neural network to improve the monitor’s detection performance
    without deteriorating the network’s classification accuracy. Our experimental
    evaluation demonstrates both the benefits of our active monitoring framework in
    dynamic scenarios and the effectiveness of the retraining procedure.
acknowledgement: This work was supported in part by the ERC-2020-AdG 101020093, by
  DIREC - Digital Research Centre Denmark, and by the Villum Investigator Grant S4OS.
article_processing_charge: Yes (in subscription journal)
article_type: original
arxiv: 1
author:
- first_name: Konstantin
  full_name: Kueffner, Konstantin
  id: 8121a2d0-dc85-11ea-9058-af578f3b4515
  last_name: Kueffner
  orcid: 0000-0001-8974-2542
- first_name: Anna
  full_name: Lukina, Anna
  id: CBA4D1A8-0FE8-11E9-BDE6-07BFE5697425
  last_name: Lukina
- first_name: Christian
  full_name: Schilling, Christian
  id: 3A2F4DCE-F248-11E8-B48F-1D18A9856A87
  last_name: Schilling
  orcid: 0000-0003-3658-1065
- 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: 'Kueffner K, Lukina A, Schilling C, Henzinger TA. Into the unknown: Active
    monitoring of neural networks (extended version). <i>International Journal on
    Software Tools for Technology Transfer</i>. 2023;25:575-592. doi:<a href="https://doi.org/10.1007/s10009-023-00711-4">10.1007/s10009-023-00711-4</a>'
  apa: 'Kueffner, K., Lukina, A., Schilling, C., &#38; Henzinger, T. A. (2023). Into
    the unknown: Active monitoring of neural networks (extended version). <i>International
    Journal on Software Tools for Technology Transfer</i>. Springer Nature. <a href="https://doi.org/10.1007/s10009-023-00711-4">https://doi.org/10.1007/s10009-023-00711-4</a>'
  chicago: 'Kueffner, Konstantin, Anna Lukina, Christian Schilling, and Thomas A Henzinger.
    “Into the Unknown: Active Monitoring of Neural Networks (Extended Version).” <i>International
    Journal on Software Tools for Technology Transfer</i>. Springer Nature, 2023.
    <a href="https://doi.org/10.1007/s10009-023-00711-4">https://doi.org/10.1007/s10009-023-00711-4</a>.'
  ieee: 'K. Kueffner, A. Lukina, C. Schilling, and T. A. Henzinger, “Into the unknown:
    Active monitoring of neural networks (extended version),” <i>International Journal
    on Software Tools for Technology Transfer</i>, vol. 25. Springer Nature, pp. 575–592,
    2023.'
  ista: 'Kueffner K, Lukina A, Schilling C, Henzinger TA. 2023. Into the unknown:
    Active monitoring of neural networks (extended version). International Journal
    on Software Tools for Technology Transfer. 25, 575–592.'
  mla: 'Kueffner, Konstantin, et al. “Into the Unknown: Active Monitoring of Neural
    Networks (Extended Version).” <i>International Journal on Software Tools for Technology
    Transfer</i>, vol. 25, Springer Nature, 2023, pp. 575–92, doi:<a href="https://doi.org/10.1007/s10009-023-00711-4">10.1007/s10009-023-00711-4</a>.'
  short: K. Kueffner, A. Lukina, C. Schilling, T.A. Henzinger, International Journal
    on Software Tools for Technology Transfer 25 (2023) 575–592.
date_created: 2023-07-16T22:01:11Z
date_published: 2023-08-01T00:00:00Z
date_updated: 2024-01-30T12:06:57Z
day: '01'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1007/s10009-023-00711-4
ec_funded: 1
external_id:
  arxiv:
  - '2009.06429'
  isi:
  - '001020160000001'
file:
- access_level: open_access
  checksum: 3c4b347f39412a76872f9a6f30101f94
  content_type: application/pdf
  creator: dernst
  date_created: 2024-01-30T12:06:07Z
  date_updated: 2024-01-30T12:06:07Z
  file_id: '14903'
  file_name: 2023_JourSoftwareTools_Kueffner.pdf
  file_size: 13387667
  relation: main_file
  success: 1
file_date_updated: 2024-01-30T12:06:07Z
has_accepted_license: '1'
intvolume: '        25'
isi: 1
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: 575-592
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: International Journal on Software Tools for Technology Transfer
publication_identifier:
  eissn:
  - 1433-2787
  issn:
  - 1433-2779
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '10206'
    relation: shorter_version
    status: public
scopus_import: '1'
status: public
title: 'Into the unknown: Active monitoring of neural networks (extended version)'
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: 25
year: '2023'
...
---
_id: '13263'
abstract:
- lang: eng
  text: "Motivation: Boolean networks are simple but efficient mathematical formalism
    for modelling complex biological systems. However, having only two levels of activation
    is sometimes not enough to fully capture the dynamics of real-world biological
    systems. Hence, the need for multi-valued networks (MVNs), a generalization of
    Boolean networks. Despite the importance of MVNs for modelling biological systems,
    only limited progress has been made on developing theories, analysis methods,
    and tools that can support them. In particular, the recent use of trap spaces
    in Boolean networks made a great impact on the field of systems biology, but there
    has been no similar concept defined and studied for MVNs to date.\r\n\r\nResults:
    In this work, we generalize the concept of trap spaces in Boolean networks to
    that in MVNs. We then develop the theory and the analysis methods for trap spaces
    in MVNs. In particular, we implement all proposed methods in a Python package
    called trapmvn. Not only showing the applicability of our approach via a realistic
    case study, we also evaluate the time efficiency of the method on a large collection
    of real-world models. The experimental results confirm the time efficiency, which
    we believe enables more accurate analysis on larger and more complex multi-valued
    models."
acknowledgement: This work was supported by L’Institut Carnot STAR, Marseille, France,
  and by the European Union’s Horizon 2020 research and innovation programme under
  the Marie Skłodowska-Curie Grant Agreement No. [101034413].
article_processing_charge: Yes
article_type: original
author:
- first_name: Van Giang
  full_name: Trinh, Van Giang
  last_name: Trinh
- first_name: Belaid
  full_name: Benhamou, Belaid
  last_name: Benhamou
- 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: Samuel
  full_name: Pastva, Samuel
  id: 07c5ea74-f61c-11ec-a664-aa7c5d957b2b
  last_name: Pastva
  orcid: 0000-0003-1993-0331
citation:
  ama: 'Trinh VG, Benhamou B, Henzinger TA, Pastva S. Trap spaces of multi-valued
    networks: Definition, computation, and applications. <i>Bioinformatics</i>. 2023;39(Supplement_1):i513-i522.
    doi:<a href="https://doi.org/10.1093/bioinformatics/btad262">10.1093/bioinformatics/btad262</a>'
  apa: 'Trinh, V. G., Benhamou, B., Henzinger, T. A., &#38; Pastva, S. (2023). Trap
    spaces of multi-valued networks: Definition, computation, and applications. <i>Bioinformatics</i>.
    Oxford Academic. <a href="https://doi.org/10.1093/bioinformatics/btad262">https://doi.org/10.1093/bioinformatics/btad262</a>'
  chicago: 'Trinh, Van Giang, Belaid Benhamou, Thomas A Henzinger, and Samuel Pastva.
    “Trap Spaces of Multi-Valued Networks: Definition, Computation, and Applications.”
    <i>Bioinformatics</i>. Oxford Academic, 2023. <a href="https://doi.org/10.1093/bioinformatics/btad262">https://doi.org/10.1093/bioinformatics/btad262</a>.'
  ieee: 'V. G. Trinh, B. Benhamou, T. A. Henzinger, and S. Pastva, “Trap spaces of
    multi-valued networks: Definition, computation, and applications,” <i>Bioinformatics</i>,
    vol. 39, no. Supplement_1. Oxford Academic, pp. i513–i522, 2023.'
  ista: 'Trinh VG, Benhamou B, Henzinger TA, Pastva S. 2023. Trap spaces of multi-valued
    networks: Definition, computation, and applications. Bioinformatics. 39(Supplement_1),
    i513–i522.'
  mla: 'Trinh, Van Giang, et al. “Trap Spaces of Multi-Valued Networks: Definition,
    Computation, and Applications.” <i>Bioinformatics</i>, vol. 39, no. Supplement_1,
    Oxford Academic, 2023, pp. i513–22, doi:<a href="https://doi.org/10.1093/bioinformatics/btad262">10.1093/bioinformatics/btad262</a>.'
  short: V.G. Trinh, B. Benhamou, T.A. Henzinger, S. Pastva, Bioinformatics 39 (2023)
    i513–i522.
date_created: 2023-07-23T22:01:12Z
date_published: 2023-06-30T00:00:00Z
date_updated: 2023-12-13T11:41:52Z
day: '30'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1093/bioinformatics/btad262
ec_funded: 1
external_id:
  isi:
  - '001027457000060'
  pmid:
  - '37387165'
file:
- access_level: open_access
  checksum: ba3abe1171df1958413b7c7f957f5486
  content_type: application/pdf
  creator: dernst
  date_created: 2023-07-31T11:09:05Z
  date_updated: 2023-07-31T11:09:05Z
  file_id: '13335'
  file_name: 2023_Bioinformatics_Trinh.pdf
  file_size: 641736
  relation: main_file
  success: 1
file_date_updated: 2023-07-31T11:09:05Z
has_accepted_license: '1'
intvolume: '        39'
isi: 1
issue: Supplement_1
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: i513-i522
pmid: 1
project:
- _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c
  call_identifier: H2020
  grant_number: '101034413'
  name: 'IST-BRIDGE: International postdoctoral program'
publication: Bioinformatics
publication_identifier:
  eissn:
  - 1367-4811
  issn:
  - 1367-4803
publication_status: published
publisher: Oxford Academic
quality_controlled: '1'
related_material:
  link:
  - relation: software
    url: https://github.com/giang-trinh/trap-mvn
scopus_import: '1'
status: public
title: 'Trap spaces of multi-valued networks: Definition, computation, and applications'
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: 39
year: '2023'
...
---
_id: '13292'
abstract:
- lang: eng
  text: The operator precedence languages (OPLs) represent the largest known subclass
    of the context-free languages which enjoys all desirable closure and decidability
    properties. This includes the decidability of language inclusion, which is the
    ultimate verification problem. Operator precedence grammars, automata, and logics
    have been investigated and used, for example, to verify programs with arithmetic
    expressions and exceptions (both of which are deterministic pushdown but lie outside
    the scope of the visibly pushdown languages). In this paper, we complete the picture
    and give, for the first time, an algebraic characterization of the class of OPLs
    in the form of a syntactic congruence that has finitely many equivalence classes
    exactly for the operator precedence languages. This is a generalization of the
    celebrated Myhill-Nerode theorem for the regular languages to OPLs. As one of
    the consequences, we show that universality and language inclusion for nondeterministic
    operator precedence automata can be solved by an antichain algorithm. Antichain
    algorithms avoid determinization and complementation through an explicit subset
    construction, by leveraging a quasi-order on words, which allows the pruning of
    the search space for counterexample words without sacrificing completeness. Antichain
    algorithms can be implemented symbolically, and these implementations are today
    the best-performing algorithms in practice for the inclusion of finite automata.
    We give a generic construction of the quasi-order needed for antichain algorithms
    from a finite syntactic congruence. This yields the first antichain algorithm
    for OPLs, an algorithm that solves the ExpTime-hard language inclusion problem
    for OPLs in exponential time.
acknowledgement: "This work was supported in part by the ERC-2020-AdG 101020093.\r\nWe
  thank Pierre Ganty for early discussions and the anonymous reviewers for their helpful
  comments.\r\n"
alternative_title:
- LIPIcs
article_processing_charge: Yes
arxiv: 1
author:
- 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: Pavol
  full_name: Kebis, Pavol
  last_name: Kebis
- first_name: Nicolas Adrien
  full_name: Mazzocchi, Nicolas Adrien
  id: b26baa86-3308-11ec-87b0-8990f34baa85
  last_name: Mazzocchi
- first_name: Naci E
  full_name: Sarac, Naci E
  id: 8C6B42F8-C8E6-11E9-A03A-F2DCE5697425
  last_name: Sarac
citation:
  ama: 'Henzinger TA, Kebis P, Mazzocchi NA, Sarac NE. Regular methods for operator
    precedence languages. In: <i>50th International Colloquium on Automata, Languages,
    and Programming</i>. Vol 261. Schloss Dagstuhl - Leibniz-Zentrum für Informatik;
    2023:129:1--129:20. doi:<a href="https://doi.org/10.4230/LIPIcs.ICALP.2023.129">10.4230/LIPIcs.ICALP.2023.129</a>'
  apa: 'Henzinger, T. A., Kebis, P., Mazzocchi, N. A., &#38; Sarac, N. E. (2023).
    Regular methods for operator precedence languages. In <i>50th International Colloquium
    on Automata, Languages, and Programming</i> (Vol. 261, p. 129:1--129:20). Paderborn,
    Germany: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. <a href="https://doi.org/10.4230/LIPIcs.ICALP.2023.129">https://doi.org/10.4230/LIPIcs.ICALP.2023.129</a>'
  chicago: Henzinger, Thomas A, Pavol Kebis, Nicolas Adrien Mazzocchi, and Naci E
    Sarac. “Regular Methods for Operator Precedence Languages.” In <i>50th International
    Colloquium on Automata, Languages, and Programming</i>, 261:129:1--129:20. Schloss
    Dagstuhl - Leibniz-Zentrum für Informatik, 2023. <a href="https://doi.org/10.4230/LIPIcs.ICALP.2023.129">https://doi.org/10.4230/LIPIcs.ICALP.2023.129</a>.
  ieee: T. A. Henzinger, P. Kebis, N. A. Mazzocchi, and N. E. Sarac, “Regular methods
    for operator precedence languages,” in <i>50th International Colloquium on Automata,
    Languages, and Programming</i>, Paderborn, Germany, 2023, vol. 261, p. 129:1--129:20.
  ista: 'Henzinger TA, Kebis P, Mazzocchi NA, Sarac NE. 2023. Regular methods for
    operator precedence languages. 50th International Colloquium on Automata, Languages,
    and Programming. ICALP: International Colloquium on Automata, Languages, and Programming,
    LIPIcs, vol. 261, 129:1--129:20.'
  mla: Henzinger, Thomas A., et al. “Regular Methods for Operator Precedence Languages.”
    <i>50th International Colloquium on Automata, Languages, and Programming</i>,
    vol. 261, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2023, p. 129:1--129:20,
    doi:<a href="https://doi.org/10.4230/LIPIcs.ICALP.2023.129">10.4230/LIPIcs.ICALP.2023.129</a>.
  short: T.A. Henzinger, P. Kebis, N.A. Mazzocchi, N.E. Sarac, in:, 50th International
    Colloquium on Automata, Languages, and Programming, Schloss Dagstuhl - Leibniz-Zentrum
    für Informatik, 2023, p. 129:1--129:20.
conference:
  end_date: 2023-07-14
  location: Paderborn, Germany
  name: 'ICALP: International Colloquium on Automata, Languages, and Programming'
  start_date: 2023-07-10
date_created: 2023-07-24T15:11:41Z
date_published: 2023-07-05T00:00:00Z
date_updated: 2023-07-31T08:38:38Z
day: '05'
ddc:
- '000'
department:
- _id: GradSch
- _id: ToHe
doi: 10.4230/LIPIcs.ICALP.2023.129
ec_funded: 1
external_id:
  arxiv:
  - '2305.03447'
file:
- access_level: open_access
  checksum: 5d4c8932ef3450615a53b9bb15d92eb2
  content_type: application/pdf
  creator: esarac
  date_created: 2023-07-24T15:11:05Z
  date_updated: 2023-07-24T15:11:05Z
  file_id: '13293'
  file_name: icalp23.pdf
  file_size: 859379
  relation: main_file
  success: 1
file_date_updated: 2023-07-24T15:11:05Z
has_accepted_license: '1'
intvolume: '       261'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 129:1--129:20
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: 50th International Colloquium on Automata, Languages, and Programming
publication_identifier:
  eissn:
  - 1868-8969
  isbn:
  - '9783959772785'
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
status: public
title: Regular methods for operator precedence languages
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: 261
year: '2023'
...
---
_id: '13310'
abstract:
- lang: eng
  text: Machine-learned systems are in widespread use for making decisions about humans,
    and it is important that they are fair, i.e., not biased against individuals based
    on sensitive attributes. We present runtime verification of algorithmic fairness
    for systems whose models are unknown, but are assumed to have a Markov chain structure.
    We introduce a specification language that can model many common algorithmic fairness
    properties, such as demographic parity, equal opportunity, and social burden.
    We build monitors that observe a long sequence of events as generated by a given
    system, and output, after each observation, a quantitative estimate of how fair
    or biased the system was on that run until that point in time. The estimate is
    proven to be correct modulo a variable error bound and a given confidence level,
    where the error bound gets tighter as the observed sequence gets longer. Our monitors
    are of two types, and use, respectively, frequentist and Bayesian statistical
    inference techniques. While the frequentist monitors compute estimates that are
    objectively correct with respect to the ground truth, the Bayesian monitors compute
    estimates that are correct subject to a given prior belief about the system’s
    model. Using a prototype implementation, we show how we can monitor if a bank
    is fair in giving loans to applicants from different social backgrounds, and if
    a college is fair in admitting students while maintaining a reasonable financial
    burden on the society. Although they exhibit different theoretical complexities
    in certain cases, in our experiments, both frequentist and Bayesian monitors took
    less than a millisecond to update their verdicts after each observation.
acknowledgement: 'This work is supported by the European Research Council under Grant
  No.: ERC-2020-AdG101020093.'
alternative_title:
- LNCS
article_processing_charge: Yes (in subscription journal)
arxiv: 1
author:
- 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: Mahyar
  full_name: Karimi, Mahyar
  id: f1dedef5-2f78-11ee-989a-c4c97bccf506
  last_name: Karimi
  orcid: 0009-0005-0820-1696
- first_name: Konstantin
  full_name: Kueffner, Konstantin
  id: 8121a2d0-dc85-11ea-9058-af578f3b4515
  last_name: Kueffner
  orcid: 0000-0001-8974-2542
- first_name: Kaushik
  full_name: Mallik, Kaushik
  id: 0834ff3c-6d72-11ec-94e0-b5b0a4fb8598
  last_name: Mallik
  orcid: 0000-0001-9864-7475
citation:
  ama: 'Henzinger TA, Karimi M, Kueffner K, Mallik K. Monitoring algorithmic fairness.
    In: <i>Computer Aided Verification</i>. Vol 13965. Springer Nature; 2023:358–382.
    doi:<a href="https://doi.org/10.1007/978-3-031-37703-7_17">10.1007/978-3-031-37703-7_17</a>'
  apa: 'Henzinger, T. A., Karimi, M., Kueffner, K., &#38; Mallik, K. (2023). Monitoring
    algorithmic fairness. In <i>Computer Aided Verification</i> (Vol. 13965, pp. 358–382).
    Paris, France: Springer Nature. <a href="https://doi.org/10.1007/978-3-031-37703-7_17">https://doi.org/10.1007/978-3-031-37703-7_17</a>'
  chicago: Henzinger, Thomas A, Mahyar Karimi, Konstantin Kueffner, and Kaushik Mallik.
    “Monitoring Algorithmic Fairness.” In <i>Computer Aided Verification</i>, 13965:358–382.
    Springer Nature, 2023. <a href="https://doi.org/10.1007/978-3-031-37703-7_17">https://doi.org/10.1007/978-3-031-37703-7_17</a>.
  ieee: T. A. Henzinger, M. Karimi, K. Kueffner, and K. Mallik, “Monitoring algorithmic
    fairness,” in <i>Computer Aided Verification</i>, Paris, France, 2023, vol. 13965,
    pp. 358–382.
  ista: 'Henzinger TA, Karimi M, Kueffner K, Mallik K. 2023. Monitoring algorithmic
    fairness. Computer Aided Verification. CAV: Computer Aided Verification, LNCS,
    vol. 13965, 358–382.'
  mla: Henzinger, Thomas A., et al. “Monitoring Algorithmic Fairness.” <i>Computer
    Aided Verification</i>, vol. 13965, Springer Nature, 2023, pp. 358–382, doi:<a
    href="https://doi.org/10.1007/978-3-031-37703-7_17">10.1007/978-3-031-37703-7_17</a>.
  short: T.A. Henzinger, M. Karimi, K. Kueffner, K. Mallik, in:, Computer Aided Verification,
    Springer Nature, 2023, pp. 358–382.
conference:
  end_date: 2023-07-22
  location: Paris, France
  name: 'CAV: Computer Aided Verification'
  start_date: 2023-07-17
date_created: 2023-07-25T18:32:40Z
date_published: 2023-07-18T00:00:00Z
date_updated: 2023-09-05T15:14:00Z
day: '18'
ddc:
- '000'
department:
- _id: GradSch
- _id: ToHe
doi: 10.1007/978-3-031-37703-7_17
ec_funded: 1
external_id:
  arxiv:
  - '2305.15979'
file:
- access_level: open_access
  checksum: ccaf94bf7d658ba012c016e11869b54c
  content_type: application/pdf
  creator: dernst
  date_created: 2023-07-31T08:11:20Z
  date_updated: 2023-07-31T08:11:20Z
  file_id: '13327'
  file_name: 2023_LNCS_CAV_HenzingerT.pdf
  file_size: 647760
  relation: main_file
  success: 1
file_date_updated: 2023-07-31T08:11:20Z
has_accepted_license: '1'
intvolume: '     13965'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 358–382
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: Computer Aided Verification
publication_identifier:
  eisbn:
  - '9783031377037'
  eissn:
  - 1611-3349
  isbn:
  - '9783031377020'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Monitoring algorithmic fairness
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: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 13965
year: '2023'
...
---
_id: '14830'
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.
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.
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. In: <i>Proceedings of the
    37th AAAI Conference on Artificial Intelligence</i>. Vol 37. Association for the
    Advancement of Artificial Intelligence; 2023:11926-11935. doi:<a href="https://doi.org/10.1609/aaai.v37i10.26407">10.1609/aaai.v37i10.26407</a>'
  apa: 'Zikelic, D., Lechner, M., Henzinger, T. A., &#38; Chatterjee, K. (2023). Learning
    control policies for stochastic systems with reach-avoid guarantees. In <i>Proceedings
    of the 37th AAAI Conference on Artificial Intelligence</i> (Vol. 37, pp. 11926–11935).
    Washington, DC, United States: Association for the Advancement of Artificial Intelligence.
    <a href="https://doi.org/10.1609/aaai.v37i10.26407">https://doi.org/10.1609/aaai.v37i10.26407</a>'
  chicago: Zikelic, Dorde, Mathias Lechner, Thomas A Henzinger, and Krishnendu Chatterjee.
    “Learning Control Policies for Stochastic Systems with Reach-Avoid Guarantees.”
    In <i>Proceedings of the 37th AAAI Conference on Artificial Intelligence</i>,
    37:11926–35. Association for the Advancement of Artificial Intelligence, 2023.
    <a href="https://doi.org/10.1609/aaai.v37i10.26407">https://doi.org/10.1609/aaai.v37i10.26407</a>.
  ieee: D. Zikelic, M. Lechner, T. A. Henzinger, and K. Chatterjee, “Learning control
    policies for stochastic systems with reach-avoid guarantees,” in <i>Proceedings
    of the 37th AAAI Conference on Artificial Intelligence</i>, Washington, DC, United
    States, 2023, vol. 37, no. 10, pp. 11926–11935.
  ista: 'Zikelic D, Lechner M, Henzinger TA, Chatterjee K. 2023. Learning control
    policies for stochastic systems with reach-avoid guarantees. Proceedings of the
    37th AAAI Conference on Artificial Intelligence. AAAI: Conference on Artificial
    Intelligence vol. 37, 11926–11935.'
  mla: Zikelic, Dorde, et al. “Learning Control Policies for Stochastic Systems with
    Reach-Avoid Guarantees.” <i>Proceedings of the 37th AAAI Conference on Artificial
    Intelligence</i>, vol. 37, no. 10, Association for the Advancement of Artificial
    Intelligence, 2023, pp. 11926–35, doi:<a href="https://doi.org/10.1609/aaai.v37i10.26407">10.1609/aaai.v37i10.26407</a>.
  short: D. Zikelic, M. Lechner, T.A. Henzinger, K. Chatterjee, in:, Proceedings of
    the 37th AAAI Conference on Artificial Intelligence, Association for the Advancement
    of Artificial Intelligence, 2023, pp. 11926–11935.
conference:
  end_date: 2023-02-14
  location: Washington, DC, United States
  name: 'AAAI: Conference on Artificial Intelligence'
  start_date: 2023-02-07
date_created: 2024-01-18T07:44:31Z
date_published: 2023-06-26T00:00:00Z
date_updated: 2025-07-14T09:10:02Z
day: '26'
department:
- _id: ToHe
- _id: KrCh
doi: 10.1609/aaai.v37i10.26407
ec_funded: 1
external_id:
  arxiv:
  - '2210.05308'
intvolume: '        37'
issue: '10'
keyword:
- General Medicine
language:
- iso: eng
month: '06'
oa_version: Preprint
page: 11926-11935
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: Proceedings of the 37th AAAI Conference on Artificial Intelligence
publication_identifier:
  eissn:
  - 2374-3468
  issn:
  - 2159-5399
publication_status: published
publisher: Association for the Advancement of Artificial Intelligence
quality_controlled: '1'
related_material:
  record:
  - id: '14600'
    relation: earlier_version
    status: public
status: public
title: Learning control policies for stochastic systems with reach-avoid guarantees
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 37
year: '2023'
...
---
_id: '14920'
abstract:
- lang: eng
  text: "We consider fixpoint algorithms for two-player games on graphs with $\\omega$-regular
    winning conditions, where the environment is constrained by a strong transition
    fairness assumption. Strong transition fairness is a widely occurring special
    case of strong fairness, which requires that any execution is strongly fair with
    respect to a specified set of live edges: whenever the\r\nsource vertex of a live
    edge is visited infinitely often along a play, the edge itself is traversed infinitely
    often along the play as well. We show that, surprisingly, strong transition fairness
    retains the algorithmic characteristics of the fixpoint algorithms for $\\omega$-regular
    games -- the new algorithms have the same alternation depth as the classical algorithms
    but invoke a new type of predecessor operator. For Rabin games with $k$ pairs,
    the complexity of the new algorithm is $O(n^{k+2}k!)$ symbolic steps, which is
    independent of the number of live edges in the strong transition fairness assumption.
    Further, we show that GR(1) specifications with strong transition fairness assumptions
    can be solved with a 3-nested fixpoint algorithm, same as the usual algorithm.
    In contrast, strong fairness necessarily requires increasing the alternation depth
    depending on the number of fairness assumptions. We get symbolic algorithms for
    (generalized) Rabin, parity and GR(1) objectives under strong transition fairness
    assumptions as well as a direct symbolic algorithm for qualitative winning in
    stochastic\r\n$\\omega$-regular games that runs in $O(n^{k+2}k!)$ symbolic steps,
    improving the state of the art. Finally, we have implemented a BDD-based synthesis
    engine based on our algorithm. We show on a set of synthetic and real benchmarks
    that our algorithm is scalable, parallelizable, and outperforms previous algorithms
    by orders of magnitude."
acknowledgement: A previous version of this paper has appeared in TACAS 2022. Authors
  ordered alphabetically. T. Banerjee was interning with MPI-SWS when this research
  was conducted. R. Majumdar and A.-K. Schmuck are partially supported by DFG project
  389792660 TRR 248–CPEC. A.-K. Schmuck is additionally funded through DFG project
  (SCHM 3541/1-1). K. Mallik is supported by the ERC project ERC-2020-AdG 101020093.
article_number: '4'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Tamajit
  full_name: Banerjee, Tamajit
  last_name: Banerjee
- first_name: Rupak
  full_name: Majumdar, Rupak
  last_name: Majumdar
- first_name: Kaushik
  full_name: Mallik, Kaushik
  id: 0834ff3c-6d72-11ec-94e0-b5b0a4fb8598
  last_name: Mallik
  orcid: 0000-0001-9864-7475
- first_name: Anne-Kathrin
  full_name: Schmuck, Anne-Kathrin
  last_name: Schmuck
- first_name: Sadegh
  full_name: Soudjani, Sadegh
  last_name: Soudjani
citation:
  ama: Banerjee T, Majumdar R, Mallik K, Schmuck A-K, Soudjani S. Fast symbolic algorithms
    for mega-regular games under strong transition fairness. <i>TheoretiCS</i>. 2023;2.
    doi:<a href="https://doi.org/10.46298/theoretics.23.4">10.46298/theoretics.23.4</a>
  apa: Banerjee, T., Majumdar, R., Mallik, K., Schmuck, A.-K., &#38; Soudjani, S.
    (2023). Fast symbolic algorithms for mega-regular games under strong transition
    fairness. <i>TheoretiCS</i>. EPI Sciences. <a href="https://doi.org/10.46298/theoretics.23.4">https://doi.org/10.46298/theoretics.23.4</a>
  chicago: Banerjee, Tamajit, Rupak Majumdar, Kaushik Mallik, Anne-Kathrin Schmuck,
    and Sadegh Soudjani. “Fast Symbolic Algorithms for Mega-Regular Games under Strong
    Transition Fairness.” <i>TheoretiCS</i>. EPI Sciences, 2023. <a href="https://doi.org/10.46298/theoretics.23.4">https://doi.org/10.46298/theoretics.23.4</a>.
  ieee: T. Banerjee, R. Majumdar, K. Mallik, A.-K. Schmuck, and S. Soudjani, “Fast
    symbolic algorithms for mega-regular games under strong transition fairness,”
    <i>TheoretiCS</i>, vol. 2. EPI Sciences, 2023.
  ista: Banerjee T, Majumdar R, Mallik K, Schmuck A-K, Soudjani S. 2023. Fast symbolic
    algorithms for mega-regular games under strong transition fairness. TheoretiCS.
    2, 4.
  mla: Banerjee, Tamajit, et al. “Fast Symbolic Algorithms for Mega-Regular Games
    under Strong Transition Fairness.” <i>TheoretiCS</i>, vol. 2, 4, EPI Sciences,
    2023, doi:<a href="https://doi.org/10.46298/theoretics.23.4">10.46298/theoretics.23.4</a>.
  short: T. Banerjee, R. Majumdar, K. Mallik, A.-K. Schmuck, S. Soudjani, TheoretiCS
    2 (2023).
date_created: 2024-01-31T13:40:49Z
date_published: 2023-02-24T00:00:00Z
date_updated: 2024-02-05T10:21:51Z
day: '24'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.46298/theoretics.23.4
ec_funded: 1
external_id:
  arxiv:
  - '2202.07480'
file:
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file_date_updated: 2024-02-05T10:19:35Z
has_accepted_license: '1'
intvolume: '         2'
language:
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month: '02'
oa: 1
oa_version: Published Version
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: TheoretiCS
publication_identifier:
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publication_status: published
publisher: EPI Sciences
quality_controlled: '1'
status: public
title: Fast symbolic algorithms for mega-regular games under strong transition fairness
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: 2
year: '2023'
...
---
_id: '14994'
abstract:
- lang: eng
  text: This resource contains the artifacts for reproducing the experimental results
    presented in the paper titled "A Flexible Toolchain for Symbolic Rabin Games under
    Fair and Stochastic Uncertainties" that has been submitted in CAV 2023.
article_processing_charge: No
author:
- first_name: Rupak
  full_name: Majumdar, Rupak
  last_name: Majumdar
- first_name: Kaushik
  full_name: Mallik, Kaushik
  id: 0834ff3c-6d72-11ec-94e0-b5b0a4fb8598
  last_name: Mallik
  orcid: 0000-0001-9864-7475
- first_name: Mateusz
  full_name: Rychlicki, Mateusz
  last_name: Rychlicki
- first_name: Anne-Kathrin
  full_name: Schmuck, Anne-Kathrin
  last_name: Schmuck
- first_name: Sadegh
  full_name: Soudjani, Sadegh
  last_name: Soudjani
citation:
  ama: Majumdar R, Mallik K, Rychlicki M, Schmuck A-K, Soudjani S. A flexible toolchain
    for symbolic rabin games under fair and stochastic uncertainties. 2023. doi:<a
    href="https://doi.org/10.5281/ZENODO.7877790">10.5281/ZENODO.7877790</a>
  apa: Majumdar, R., Mallik, K., Rychlicki, M., Schmuck, A.-K., &#38; Soudjani, S.
    (2023). A flexible toolchain for symbolic rabin games under fair and stochastic
    uncertainties. Zenodo. <a href="https://doi.org/10.5281/ZENODO.7877790">https://doi.org/10.5281/ZENODO.7877790</a>
  chicago: Majumdar, Rupak, Kaushik Mallik, Mateusz Rychlicki, Anne-Kathrin Schmuck,
    and Sadegh Soudjani. “A Flexible Toolchain for Symbolic Rabin Games under Fair
    and Stochastic Uncertainties.” Zenodo, 2023. <a href="https://doi.org/10.5281/ZENODO.7877790">https://doi.org/10.5281/ZENODO.7877790</a>.
  ieee: R. Majumdar, K. Mallik, M. Rychlicki, A.-K. Schmuck, and S. Soudjani, “A flexible
    toolchain for symbolic rabin games under fair and stochastic uncertainties.” Zenodo,
    2023.
  ista: Majumdar R, Mallik K, Rychlicki M, Schmuck A-K, Soudjani S. 2023. A flexible
    toolchain for symbolic rabin games under fair and stochastic uncertainties, Zenodo,
    <a href="https://doi.org/10.5281/ZENODO.7877790">10.5281/ZENODO.7877790</a>.
  mla: Majumdar, Rupak, et al. <i>A Flexible Toolchain for Symbolic Rabin Games under
    Fair and Stochastic Uncertainties</i>. Zenodo, 2023, doi:<a href="https://doi.org/10.5281/ZENODO.7877790">10.5281/ZENODO.7877790</a>.
  short: R. Majumdar, K. Mallik, M. Rychlicki, A.-K. Schmuck, S. Soudjani, (2023).
date_created: 2024-02-14T15:13:00Z
date_published: 2023-04-28T00:00:00Z
date_updated: 2024-02-27T07:39:51Z
day: '28'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.5281/ZENODO.7877790
has_accepted_license: '1'
main_file_link:
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month: '04'
oa: 1
oa_version: Published Version
publisher: Zenodo
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status: public
title: A flexible toolchain for symbolic rabin games under fair and stochastic uncertainties
tmp:
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type: research_data_reference
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year: '2023'
...
---
_id: '15023'
abstract:
- lang: eng
  text: Reinforcement learning has shown promising results in learning neural network
    policies for complicated control tasks. However, the lack of formal guarantees
    about the behavior of such policies remains an impediment to their deployment.
    We propose a novel method for learning a composition of neural network policies
    in stochastic environments, along with a formal certificate which guarantees that
    a specification over the policy's behavior is satisfied with the desired probability.
    Unlike prior work on verifiable RL, our approach leverages the compositional nature
    of logical specifications provided in SpectRL, to learn over graphs of probabilistic
    reach-avoid specifications. The formal guarantees are provided by learning neural
    network policies together with reach-avoid supermartingales (RASM) for the graph’s
    sub-tasks and then composing them into a global policy. We also derive a tighter
    lower bound compared to previous work on the probability of reach-avoidance implied
    by a RASM, which is required to find a compositional policy with an acceptable
    probabilistic threshold for complex tasks with multiple edge policies. We implement
    a prototype of our approach and evaluate it on a Stochastic Nine Rooms environment.
acknowledgement: "This work was supported in part by the ERC-2020-AdG 101020093 (VAMOS)
  and the ERC-2020-\r\nCoG 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: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
- first_name: Abhinav
  full_name: Verma, Abhinav
  id: a235593c-d7fa-11eb-a0c5-b22ca3c66ee6
  last_name: Verma
- 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, Verma A, Chatterjee K, Henzinger TA. Compositional policy
    learning in stochastic control systems with formal guarantees. In: <i>37th Conference
    on Neural Information Processing Systems</i>. ; 2023.'
  apa: Zikelic, D., Lechner, M., Verma, A., Chatterjee, K., &#38; Henzinger, T. A.
    (2023). Compositional policy learning in stochastic control systems with formal
    guarantees. In <i>37th Conference on Neural Information Processing Systems</i>.
    New Orleans, LO, United States.
  chicago: Zikelic, Dorde, Mathias Lechner, Abhinav Verma, Krishnendu Chatterjee,
    and Thomas A Henzinger. “Compositional Policy Learning in Stochastic Control Systems
    with Formal Guarantees.” In <i>37th Conference on Neural Information Processing
    Systems</i>, 2023.
  ieee: D. Zikelic, M. Lechner, A. Verma, K. Chatterjee, and T. A. Henzinger, “Compositional
    policy learning in stochastic control systems with formal guarantees,” in <i>37th
    Conference on Neural Information Processing Systems</i>, New Orleans, LO, United
    States, 2023.
  ista: 'Zikelic D, Lechner M, Verma A, Chatterjee K, Henzinger TA. 2023. Compositional
    policy learning in stochastic control systems with formal guarantees. 37th Conference
    on Neural Information Processing Systems. NeurIPS: Neural Information Processing
    Systems.'
  mla: Zikelic, Dorde, et al. “Compositional Policy Learning in Stochastic Control
    Systems with Formal Guarantees.” <i>37th Conference on Neural Information Processing
    Systems</i>, 2023.
  short: D. Zikelic, M. Lechner, A. Verma, K. Chatterjee, T.A. Henzinger, in:, 37th
    Conference on Neural Information Processing Systems, 2023.
conference:
  end_date: 2023-12-16
  location: New Orleans, LO, United States
  name: 'NeurIPS: Neural Information Processing Systems'
  start_date: 2023-12-10
date_created: 2024-02-25T09:23:24Z
date_published: 2023-12-15T00:00:00Z
date_updated: 2025-07-14T09:10:04Z
day: '15'
department:
- _id: ToHe
- _id: KrCh
ec_funded: 1
external_id:
  arxiv:
  - '2312.01456'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2312.01456
month: '12'
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
publication: 37th Conference on Neural Information Processing Systems
publication_status: epub_ahead
quality_controlled: '1'
status: public
title: Compositional policy learning in stochastic control systems with formal guarantees
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '15035'
abstract:
- lang: eng
  text: "This artifact aims to reproduce experiments from the paper Monitoring Hyperproperties
    With Prefix Transducers accepted at RV'23, and give further pointers to implementation
    of prefix transducers.\r\nIt has two parts: a pre-compiled docker image and sources
    that one can use to compile (locally or in docker) the software and run the experiments."
article_processing_charge: No
author:
- first_name: Marek
  full_name: Chalupa, Marek
  id: 87e34708-d6c6-11ec-9f5b-9391e7be2463
  last_name: Chalupa
- 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: Chalupa M, Henzinger TA. Monitoring hyperproperties with prefix transducers.
    2023. doi:<a href="https://doi.org/10.5281/ZENODO.8191723">10.5281/ZENODO.8191723</a>
  apa: Chalupa, M., &#38; Henzinger, T. A. (2023). Monitoring hyperproperties with
    prefix transducers. Zenodo. <a href="https://doi.org/10.5281/ZENODO.8191723">https://doi.org/10.5281/ZENODO.8191723</a>
  chicago: Chalupa, Marek, and Thomas A Henzinger. “Monitoring Hyperproperties with
    Prefix Transducers.” Zenodo, 2023. <a href="https://doi.org/10.5281/ZENODO.8191723">https://doi.org/10.5281/ZENODO.8191723</a>.
  ieee: M. Chalupa and T. A. Henzinger, “Monitoring hyperproperties with prefix transducers.”
    Zenodo, 2023.
  ista: Chalupa M, Henzinger TA. 2023. Monitoring hyperproperties with prefix transducers,
    Zenodo, <a href="https://doi.org/10.5281/ZENODO.8191723">10.5281/ZENODO.8191723</a>.
  mla: Chalupa, Marek, and Thomas A. Henzinger. <i>Monitoring Hyperproperties with
    Prefix Transducers</i>. Zenodo, 2023, doi:<a href="https://doi.org/10.5281/ZENODO.8191723">10.5281/ZENODO.8191723</a>.
  short: M. Chalupa, T.A. Henzinger, (2023).
date_created: 2024-02-28T07:34:34Z
date_published: 2023-07-28T00:00:00Z
date_updated: 2024-02-28T12:33:09Z
day: '28'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.5281/ZENODO.8191723
ec_funded: 1
has_accepted_license: '1'
main_file_link:
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  url: https://doi.org/10.5281/zenodo.8191722
month: '07'
oa: 1
oa_version: Published Version
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publisher: Zenodo
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title: Monitoring hyperproperties with prefix transducers
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type: research_data_reference
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---
_id: '14076'
abstract:
- lang: eng
  text: Hyperproperties are properties that relate multiple execution traces. Previous
    work on monitoring hyperproperties focused on synchronous hyperproperties, usually
    specified in HyperLTL. When monitoring synchronous hyperproperties, all traces
    are assumed to proceed at the same speed. We introduce (multi-trace) prefix transducers
    and show how to use them for monitoring synchronous as well as, for the first
    time, asynchronous hyperproperties. Prefix transducers map multiple input traces
    into one or more output traces by incrementally matching prefixes of the input
    traces against expressions similar to regular expressions. The prefixes of different
    traces which are consumed by a single matching step of the monitor may have different
    lengths. The deterministic and executable nature of prefix transducers makes them
    more suitable as an intermediate formalism for runtime verification than logical
    specifications, which tend to be highly non-deterministic, especially in the case
    of asynchronous hyperproperties. We report on a set of experiments about monitoring
    asynchronous version of observational determinism.
acknowledgement: This work was supported in part by the ERC-2020-AdG 101020093. The
  authors would like to thank Ana Oliveira da Costa for commenting on a draft of the
  paper.
alternative_title:
- LNCS
article_processing_charge: Yes (in subscription journal)
author:
- first_name: Marek
  full_name: Chalupa, Marek
  id: 87e34708-d6c6-11ec-9f5b-9391e7be2463
  last_name: Chalupa
- 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: 'Chalupa M, Henzinger TA. Monitoring hyperproperties with prefix transducers.
    In: <i>23nd International Conference on Runtime Verification</i>. Vol 14245. Springer
    Nature; 2023:168-190. doi:<a href="https://doi.org/10.1007/978-3-031-44267-4_9">10.1007/978-3-031-44267-4_9</a>'
  apa: 'Chalupa, M., &#38; Henzinger, T. A. (2023). Monitoring hyperproperties with
    prefix transducers. In <i>23nd International Conference on Runtime Verification</i>
    (Vol. 14245, pp. 168–190). Thessaloniki, Greek: Springer Nature. <a href="https://doi.org/10.1007/978-3-031-44267-4_9">https://doi.org/10.1007/978-3-031-44267-4_9</a>'
  chicago: Chalupa, Marek, and Thomas A Henzinger. “Monitoring Hyperproperties with
    Prefix Transducers.” In <i>23nd International Conference on Runtime Verification</i>,
    14245:168–90. Springer Nature, 2023. <a href="https://doi.org/10.1007/978-3-031-44267-4_9">https://doi.org/10.1007/978-3-031-44267-4_9</a>.
  ieee: M. Chalupa and T. A. Henzinger, “Monitoring hyperproperties with prefix transducers,”
    in <i>23nd International Conference on Runtime Verification</i>, Thessaloniki,
    Greek, 2023, vol. 14245, pp. 168–190.
  ista: 'Chalupa M, Henzinger TA. 2023. Monitoring hyperproperties with prefix transducers.
    23nd International Conference on Runtime Verification. RV: Conference on Runtime
    Verification, LNCS, vol. 14245, 168–190.'
  mla: Chalupa, Marek, and Thomas A. Henzinger. “Monitoring Hyperproperties with Prefix
    Transducers.” <i>23nd International Conference on Runtime Verification</i>, vol.
    14245, Springer Nature, 2023, pp. 168–90, doi:<a href="https://doi.org/10.1007/978-3-031-44267-4_9">10.1007/978-3-031-44267-4_9</a>.
  short: M. Chalupa, T.A. Henzinger, in:, 23nd International Conference on Runtime
    Verification, Springer Nature, 2023, pp. 168–190.
conference:
  end_date: 2023-10-07
  location: Thessaloniki, Greek
  name: 'RV: Conference on Runtime Verification'
  start_date: 2023-10-04
date_created: 2023-08-16T20:46:08Z
date_published: 2023-10-01T00:00:00Z
date_updated: 2024-02-28T12:33:08Z
day: '01'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1007/978-3-031-44267-4_9
ec_funded: 1
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  date_updated: 2023-10-16T07:15:11Z
  file_id: '14430'
  file_name: 2023_LNCS_RV_Chalupa.pdf
  file_size: 867256
  relation: main_file
  success: 1
file_date_updated: 2023-10-16T07:15:11Z
has_accepted_license: '1'
intvolume: '     14245'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 168-190
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: 23nd International Conference on Runtime Verification
publication_identifier:
  eisbn:
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  isbn:
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publisher: Springer Nature
quality_controlled: '1'
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  short: CC BY (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 14245
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...
