---
_id: '12511'
abstract:
- lang: eng
  text: "We consider the problem of formally verifying almost-sure (a.s.) asymptotic
    stability in discrete-time nonlinear stochastic control systems. While verifying
    stability in deterministic control systems is extensively studied in the literature,
    verifying stability in stochastic control systems is an open problem. The few
    existing works on this topic either consider only specialized forms of stochasticity
    or make restrictive assumptions on the system, rendering them inapplicable to
    learning algorithms with neural network policies. \r\n In this work, we present
    an approach for general nonlinear stochastic control problems with two novel aspects:
    (a) instead of classical stochastic extensions of Lyapunov functions, we use ranking
    supermartingales (RSMs) to certify a.s. asymptotic stability, and (b) we present
    a method for learning neural network RSMs. \r\n We prove that our approach guarantees
    a.s. asymptotic stability of the system and\r\n provides the first method to obtain
    bounds on the stabilization time, which stochastic Lyapunov functions do not.\r\n
    Finally, we validate our approach experimentally on a set of nonlinear stochastic
    reinforcement learning environments with neural network policies."
acknowledgement: "This work was supported in part by the ERC-2020-AdG 101020093, ERC
  CoG 863818 (FoRM-SMArt) and the European Union’s Horizon 2020 research and innovation
  programme\r\nunder the Marie Skłodowska-Curie Grant Agreement No. 665385."
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
- first_name: Dorde
  full_name: Zikelic, Dorde
  id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
  last_name: Zikelic
  orcid: 0000-0002-4681-1699
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
citation:
  ama: Lechner M, Zikelic D, Chatterjee K, Henzinger TA. Stability verification in
    stochastic control systems via neural network supermartingales. <i>Proceedings
    of the AAAI Conference on Artificial Intelligence</i>. 2022;36(7):7326-7336. doi:<a
    href="https://doi.org/10.1609/aaai.v36i7.20695">10.1609/aaai.v36i7.20695</a>
  apa: Lechner, M., Zikelic, D., Chatterjee, K., &#38; Henzinger, T. A. (2022). Stability
    verification in stochastic control systems via neural network supermartingales.
    <i>Proceedings of the AAAI Conference on Artificial Intelligence</i>. Association
    for the Advancement of Artificial Intelligence. <a href="https://doi.org/10.1609/aaai.v36i7.20695">https://doi.org/10.1609/aaai.v36i7.20695</a>
  chicago: Lechner, Mathias, Dorde Zikelic, Krishnendu Chatterjee, and Thomas A Henzinger.
    “Stability Verification in Stochastic Control Systems via Neural Network Supermartingales.”
    <i>Proceedings of the AAAI Conference on Artificial Intelligence</i>. Association
    for the Advancement of Artificial Intelligence, 2022. <a href="https://doi.org/10.1609/aaai.v36i7.20695">https://doi.org/10.1609/aaai.v36i7.20695</a>.
  ieee: M. Lechner, D. Zikelic, K. Chatterjee, and T. A. Henzinger, “Stability verification
    in stochastic control systems via neural network supermartingales,” <i>Proceedings
    of the AAAI Conference on Artificial Intelligence</i>, vol. 36, no. 7. Association
    for the Advancement of Artificial Intelligence, pp. 7326–7336, 2022.
  ista: Lechner M, Zikelic D, Chatterjee K, Henzinger TA. 2022. Stability verification
    in stochastic control systems via neural network supermartingales. Proceedings
    of the AAAI Conference on Artificial Intelligence. 36(7), 7326–7336.
  mla: Lechner, Mathias, et al. “Stability Verification in Stochastic Control Systems
    via Neural Network Supermartingales.” <i>Proceedings of the AAAI Conference on
    Artificial Intelligence</i>, vol. 36, no. 7, Association for the Advancement of
    Artificial Intelligence, 2022, pp. 7326–36, doi:<a href="https://doi.org/10.1609/aaai.v36i7.20695">10.1609/aaai.v36i7.20695</a>.
  short: M. Lechner, D. Zikelic, K. Chatterjee, T.A. Henzinger, Proceedings of the
    AAAI Conference on Artificial Intelligence 36 (2022) 7326–7336.
corr_author: '1'
date_created: 2023-02-05T17:29:50Z
date_published: 2022-06-28T00:00:00Z
date_updated: 2026-04-07T13:27:55Z
day: '28'
department:
- _id: ToHe
- _id: KrCh
doi: 10.1609/aaai.v36i7.20695
ec_funded: 1
external_id:
  arxiv:
  - '2112.09495'
intvolume: '        36'
issue: '7'
keyword:
- General Medicine
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2112.09495
month: '06'
oa: 1
oa_version: Preprint
page: 7326-7336
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: Proceedings of the AAAI Conference on Artificial Intelligence
publication_identifier:
  eissn:
  - 2374-3468
  isbn:
  - '9781577358350'
  issn:
  - 2159-5399
publication_status: published
publisher: Association for the Advancement of Artificial Intelligence
quality_controlled: '1'
related_material:
  record:
  - id: '14539'
    relation: dissertation_contains
    status: public
scopus_import: '1'
status: public
title: Stability verification in stochastic control systems via neural network supermartingales
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 36
year: '2022'
...
---
OA_place: repository
_id: '14600'
abstract:
- lang: eng
  text: We study the problem of learning controllers for discrete-time non-linear
    stochastic dynamical systems with formal reach-avoid guarantees. This work presents
    the first method for providing formal reach-avoid guarantees, which combine and
    generalize stability and safety guarantees, with a tolerable probability threshold
    $p\in[0,1]$ over the infinite time horizon. Our method leverages advances in machine
    learning literature and it represents formal certificates as neural networks.
    In particular, we learn a certificate in the form of a reach-avoid supermartingale
    (RASM), a novel notion that we introduce in this work. Our RASMs provide reachability
    and avoidance guarantees by imposing constraints on what can be viewed as a stochastic
    extension of level sets of Lyapunov functions for deterministic systems. Our approach
    solves several important problems -- it can be used to learn a control policy
    from scratch, to verify a reach-avoid specification for a fixed control policy,
    or to fine-tune a pre-trained policy if it does not satisfy the reach-avoid specification.
    We validate our approach on $3$ stochastic non-linear reinforcement learning tasks.
article_number: '2210.05308'
article_processing_charge: No
arxiv: 1
author:
- first_name: Dorde
  full_name: Zikelic, Dorde
  id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
  last_name: Zikelic
  orcid: 0000-0002-4681-1699
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
citation:
  ama: Zikelic D, Lechner M, Henzinger TA, Chatterjee K. Learning control policies
    for stochastic systems with reach-avoid guarantees. <i>arXiv</i>. doi:<a href="https://doi.org/10.48550/ARXIV.2210.05308">10.48550/ARXIV.2210.05308</a>
  apa: Zikelic, D., Lechner, M., Henzinger, T. A., &#38; Chatterjee, K. (n.d.). Learning
    control policies for stochastic systems with reach-avoid guarantees. <i>arXiv</i>.
    <a href="https://doi.org/10.48550/ARXIV.2210.05308">https://doi.org/10.48550/ARXIV.2210.05308</a>
  chicago: Zikelic, Dorde, Mathias Lechner, Thomas A Henzinger, and Krishnendu Chatterjee.
    “Learning Control Policies for Stochastic Systems with Reach-Avoid Guarantees.”
    <i>ArXiv</i>, n.d. <a href="https://doi.org/10.48550/ARXIV.2210.05308">https://doi.org/10.48550/ARXIV.2210.05308</a>.
  ieee: D. Zikelic, M. Lechner, T. A. Henzinger, and K. Chatterjee, “Learning control
    policies for stochastic systems with reach-avoid guarantees,” <i>arXiv</i>. .
  ista: Zikelic D, Lechner M, Henzinger TA, Chatterjee K. Learning control policies
    for stochastic systems with reach-avoid guarantees. arXiv, 2210.05308.
  mla: Zikelic, Dorde, et al. “Learning Control Policies for Stochastic Systems with
    Reach-Avoid Guarantees.” <i>ArXiv</i>, 2210.05308, doi:<a href="https://doi.org/10.48550/ARXIV.2210.05308">10.48550/ARXIV.2210.05308</a>.
  short: D. Zikelic, M. Lechner, T.A. Henzinger, K. Chatterjee, ArXiv (n.d.).
corr_author: '1'
date_created: 2023-11-24T13:10:09Z
date_published: 2022-11-29T00:00:00Z
date_updated: 2026-04-07T13:27:56Z
day: '29'
department:
- _id: KrCh
- _id: ToHe
doi: 10.48550/ARXIV.2210.05308
ec_funded: 1
external_id:
  arxiv:
  - '2210.05308'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-sa/4.0/
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2210.05308
month: '11'
oa: 1
oa_version: Preprint
project:
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: arXiv
publication_status: draft
related_material:
  record:
  - id: '14830'
    relation: later_version
    status: public
  - id: '14539'
    relation: dissertation_contains
    status: public
status: public
title: Learning control policies for stochastic systems with reach-avoid guarantees
tmp:
  image: /images/cc_by_sa.png
  legal_code_url: https://creativecommons.org/licenses/by-sa/4.0/legalcode
  name: Creative Commons Attribution-ShareAlike 4.0 International Public License (CC
    BY-SA 4.0)
  short: CC BY-SA (4.0)
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
OA_place: repository
_id: '14601'
abstract:
- lang: eng
  text: "In this work, we address the problem of learning provably stable neural\r\nnetwork
    policies for stochastic control systems. While recent work has\r\ndemonstrated
    the feasibility of certifying given policies using martingale\r\ntheory, the problem
    of how to learn such policies is little explored. Here, we\r\nstudy the effectiveness
    of jointly learning a policy together with a martingale\r\ncertificate that proves
    its stability using a single learning algorithm. We\r\nobserve that the joint
    optimization problem becomes easily stuck in local\r\nminima when starting from
    a randomly initialized policy. Our results suggest\r\nthat some form of pre-training
    of the policy is required for the joint\r\noptimization to repair and verify the
    policy successfully."
article_number: '2205.11991'
article_processing_charge: No
arxiv: 1
author:
- first_name: Dorde
  full_name: Zikelic, Dorde
  id: 294AA7A6-F248-11E8-B48F-1D18A9856A87
  last_name: Zikelic
  orcid: 0000-0002-4681-1699
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
- first_name: Krishnendu
  full_name: Chatterjee, Krishnendu
  id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
  last_name: Chatterjee
  orcid: 0000-0002-4561-241X
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
citation:
  ama: Zikelic D, Lechner M, Chatterjee K, Henzinger TA. Learning stabilizing policies
    in stochastic control systems. <i>arXiv</i>. doi:<a href="https://doi.org/10.48550/arXiv.2205.11991">10.48550/arXiv.2205.11991</a>
  apa: Zikelic, D., Lechner, M., Chatterjee, K., &#38; Henzinger, T. A. (n.d.). Learning
    stabilizing policies in stochastic control systems. <i>arXiv</i>. <a href="https://doi.org/10.48550/arXiv.2205.11991">https://doi.org/10.48550/arXiv.2205.11991</a>
  chicago: Zikelic, Dorde, Mathias Lechner, Krishnendu Chatterjee, and Thomas A Henzinger.
    “Learning Stabilizing Policies in Stochastic Control Systems.” <i>ArXiv</i>, n.d.
    <a href="https://doi.org/10.48550/arXiv.2205.11991">https://doi.org/10.48550/arXiv.2205.11991</a>.
  ieee: D. Zikelic, M. Lechner, K. Chatterjee, and T. A. Henzinger, “Learning stabilizing
    policies in stochastic control systems,” <i>arXiv</i>. .
  ista: Zikelic D, Lechner M, Chatterjee K, Henzinger TA. Learning stabilizing policies
    in stochastic control systems. arXiv, 2205.11991.
  mla: Zikelic, Dorde, et al. “Learning Stabilizing Policies in Stochastic Control
    Systems.” <i>ArXiv</i>, 2205.11991, doi:<a href="https://doi.org/10.48550/arXiv.2205.11991">10.48550/arXiv.2205.11991</a>.
  short: D. Zikelic, M. Lechner, K. Chatterjee, T.A. Henzinger, ArXiv (n.d.).
corr_author: '1'
date_created: 2023-11-24T13:22:30Z
date_published: 2022-05-24T00:00:00Z
date_updated: 2026-04-07T13:27:56Z
day: '24'
department:
- _id: KrCh
- _id: ToHe
doi: 10.48550/arXiv.2205.11991
ec_funded: 1
external_id:
  arxiv:
  - '2205.11991'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2205.11991
month: '05'
oa: 1
oa_version: Preprint
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
- _id: 0599E47C-7A3F-11EA-A408-12923DDC885E
  call_identifier: H2020
  grant_number: '863818'
  name: 'Formal Methods for Stochastic Models: Algorithms and Applications'
- _id: 2564DBCA-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '665385'
  name: International IST Doctoral Program
publication: arXiv
publication_status: draft
related_material:
  record:
  - id: '14539'
    relation: dissertation_contains
    status: public
status: public
title: Learning stabilizing policies in stochastic control systems
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
_id: '10774'
abstract:
- lang: eng
  text: We study the problem of specifying sequential information-flow properties
    of systems. Information-flow properties are hyperproperties, as they compare different
    traces of a system. Sequential information-flow properties can express changes,
    over time, in the information-flow constraints. For example, information-flow
    constraints during an initialization phase of a system may be different from information-flow
    constraints that are required during the operation phase. We formalize several
    variants of interpreting sequential information-flow constraints, which arise
    from different assumptions about what can be observed of the system. For this
    purpose, we introduce a first-order logic, called Hypertrace Logic, with both
    trace and time quantifiers for specifying linear-time hyperproperties. We prove
    that HyperLTL, which corresponds to a fragment of Hypertrace Logic with restricted
    quantifier prefixes, cannot specify the majority of the studied variants of sequential
    information flow, including all variants in which the transition between sequential
    phases (such as initialization and operation) happens asynchronously. Our results
    rely on new equivalences between sets of traces that cannot be distinguished by
    certain classes of formulas from Hypertrace Logic. This presents a new approach
    to proving inexpressiveness results for HyperLTL.
acknowledgement: This work was funded in part by the Wittgenstein Award Z211-N23 of
  the Austrian Science Fund (FWF) and by the FWF project W1255-N23.
alternative_title:
- LNCS
article_processing_charge: No
arxiv: 1
author:
- first_name: Ezio
  full_name: Bartocci, Ezio
  last_name: Bartocci
- first_name: Thomas
  full_name: Ferrere, Thomas
  id: 40960E6E-F248-11E8-B48F-1D18A9856A87
  last_name: Ferrere
  orcid: 0000-0001-5199-3143
- 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: Dejan
  full_name: Nickovic, Dejan
  id: 41BCEE5C-F248-11E8-B48F-1D18A9856A87
  last_name: Nickovic
- first_name: Ana Oliveira
  full_name: Da Costa, Ana Oliveira
  last_name: Da Costa
citation:
  ama: 'Bartocci E, Ferrere T, Henzinger TA, Nickovic D, Da Costa AO. Flavors of sequential
    information flow. In: <i>Lecture Notes in Computer Science (Including Subseries
    Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)</i>.
    Vol 13182. Springer Nature; 2022:1-19. doi:<a href="https://doi.org/10.1007/978-3-030-94583-1_1">10.1007/978-3-030-94583-1_1</a>'
  apa: 'Bartocci, E., Ferrere, T., Henzinger, T. A., Nickovic, D., &#38; Da Costa,
    A. O. (2022). Flavors of sequential information flow. In <i>Lecture Notes in Computer
    Science (including subseries Lecture Notes in Artificial Intelligence and Lecture
    Notes in Bioinformatics)</i> (Vol. 13182, pp. 1–19). Philadelphia, PA, United
    States: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-94583-1_1">https://doi.org/10.1007/978-3-030-94583-1_1</a>'
  chicago: Bartocci, Ezio, Thomas Ferrere, Thomas A Henzinger, Dejan Nickovic, and
    Ana Oliveira Da Costa. “Flavors of Sequential Information Flow.” In <i>Lecture
    Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence
    and Lecture Notes in Bioinformatics)</i>, 13182:1–19. Springer Nature, 2022. <a
    href="https://doi.org/10.1007/978-3-030-94583-1_1">https://doi.org/10.1007/978-3-030-94583-1_1</a>.
  ieee: E. Bartocci, T. Ferrere, T. A. Henzinger, D. Nickovic, and A. O. Da Costa,
    “Flavors of sequential information flow,” in <i>Lecture Notes in Computer Science
    (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes
    in Bioinformatics)</i>, Philadelphia, PA, United States, 2022, vol. 13182, pp.
    1–19.
  ista: 'Bartocci E, Ferrere T, Henzinger TA, Nickovic D, Da Costa AO. 2022. Flavors
    of sequential information flow. Lecture Notes in Computer Science (including subseries
    Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics).
    VMCAI: Verifcation, Model Checking, and Abstract Interpretation, LNCS, vol. 13182,
    1–19.'
  mla: Bartocci, Ezio, et al. “Flavors of Sequential Information Flow.” <i>Lecture
    Notes in Computer Science (Including Subseries Lecture Notes in Artificial Intelligence
    and Lecture Notes in Bioinformatics)</i>, vol. 13182, Springer Nature, 2022, pp.
    1–19, doi:<a href="https://doi.org/10.1007/978-3-030-94583-1_1">10.1007/978-3-030-94583-1_1</a>.
  short: E. Bartocci, T. Ferrere, T.A. Henzinger, D. Nickovic, A.O. Da Costa, in:,
    Lecture Notes in Computer Science (Including Subseries Lecture Notes in Artificial
    Intelligence and Lecture Notes in Bioinformatics), Springer Nature, 2022, pp.
    1–19.
conference:
  end_date: 2022-01-18
  location: Philadelphia, PA, United States
  name: 'VMCAI: Verifcation, Model Checking, and Abstract Interpretation'
  start_date: 2022-01-16
date_created: 2022-02-20T23:01:34Z
date_published: 2022-01-14T00:00:00Z
date_updated: 2026-04-16T09:13:43Z
day: '14'
department:
- _id: ToHe
doi: 10.1007/978-3-030-94583-1_1
external_id:
  arxiv:
  - '2105.02013'
  isi:
  - '001059208500001'
intvolume: '     13182'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: ' https://doi.org/10.48550/arXiv.2105.02013'
month: '01'
oa: 1
oa_version: Preprint
page: 1-19
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: Lecture Notes in Computer Science (including subseries Lecture Notes
  in Artificial Intelligence and Lecture Notes in Bioinformatics)
publication_identifier:
  eisbn:
  - '9783030945831'
  eissn:
  - 1611-3349
  isbn:
  - '9783030945824'
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Flavors of sequential information flow
type: conference
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 13182
year: '2022'
...
---
_id: '12508'
abstract:
- lang: eng
  text: "We explore the notion of history-determinism in the context of timed automata
    (TA). History-deterministic automata are those in which nondeterminism can be
    resolved on the fly, based on the run constructed thus far. History-determinism
    is a robust property that admits different game-based characterisations, and history-deterministic
    specifications allow for game-based verification without an expensive determinization
    step.\r\nWe show yet another characterisation of history-determinism in terms
    of fair simulation, at the general level of labelled transition systems: a system
    is history-deterministic precisely if and only if it fairly simulates all language
    smaller systems.\r\nFor timed automata over infinite timed words it is known that
    universality is undecidable for Büchi TA. We show that for history-deterministic
    TA with arbitrary parity acceptance, timed universality, inclusion, and synthesis
    all remain decidable and are ExpTime-complete.\r\nFor the subclass of TA with
    safety or reachability acceptance, we show that checking whether such an automaton
    is history-deterministic is decidable (in ExpTime), and history-deterministic
    TA with safety acceptance are effectively determinizable without introducing new
    automata states."
acknowledgement: "Thomas A. Henzinger: This work was supported in part by the ERC-2020-AdG
  101020093.\r\nPatrick Totzke: acknowledges support from the EPSRC, project no. EP/V025848/1.\r\n"
alternative_title:
- LIPIcs
article_processing_charge: No
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: Karoliina
  full_name: Lehtinen, Karoliina
  last_name: Lehtinen
- first_name: Patrick
  full_name: Totzke, Patrick
  last_name: Totzke
citation:
  ama: 'Henzinger TA, Lehtinen K, Totzke P. History-deterministic timed automata.
    In: <i>33rd International Conference on Concurrency Theory</i>. Vol 243. Schloss
    Dagstuhl - Leibniz-Zentrum für Informatik; 2022:14:1-14:21. doi:<a href="https://doi.org/10.4230/LIPIcs.CONCUR.2022.14">10.4230/LIPIcs.CONCUR.2022.14</a>'
  apa: 'Henzinger, T. A., Lehtinen, K., &#38; Totzke, P. (2022). History-deterministic
    timed automata. In <i>33rd International Conference on Concurrency Theory</i>
    (Vol. 243, p. 14:1-14:21). Warsaw, Poland: Schloss Dagstuhl - Leibniz-Zentrum
    für Informatik. <a href="https://doi.org/10.4230/LIPIcs.CONCUR.2022.14">https://doi.org/10.4230/LIPIcs.CONCUR.2022.14</a>'
  chicago: Henzinger, Thomas A, Karoliina Lehtinen, and Patrick Totzke. “History-Deterministic
    Timed Automata.” In <i>33rd International Conference on Concurrency Theory</i>,
    243:14:1-14:21. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2022. <a href="https://doi.org/10.4230/LIPIcs.CONCUR.2022.14">https://doi.org/10.4230/LIPIcs.CONCUR.2022.14</a>.
  ieee: T. A. Henzinger, K. Lehtinen, and P. Totzke, “History-deterministic timed
    automata,” in <i>33rd International Conference on Concurrency Theory</i>, Warsaw,
    Poland, 2022, vol. 243, p. 14:1-14:21.
  ista: 'Henzinger TA, Lehtinen K, Totzke P. 2022. History-deterministic timed automata.
    33rd International Conference on Concurrency Theory. CONCUR: Conference on Concurrency
    Theory, LIPIcs, vol. 243, 14:1-14:21.'
  mla: Henzinger, Thomas A., et al. “History-Deterministic Timed Automata.” <i>33rd
    International Conference on Concurrency Theory</i>, vol. 243, Schloss Dagstuhl
    - Leibniz-Zentrum für Informatik, 2022, p. 14:1-14:21, doi:<a href="https://doi.org/10.4230/LIPIcs.CONCUR.2022.14">10.4230/LIPIcs.CONCUR.2022.14</a>.
  short: T.A. Henzinger, K. Lehtinen, P. Totzke, in:, 33rd International Conference
    on Concurrency Theory, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2022,
    p. 14:1-14:21.
conference:
  end_date: 2022-09-16
  location: Warsaw, Poland
  name: 'CONCUR: Conference on Concurrency Theory'
  start_date: 2022-09-13
corr_author: '1'
das_tickbox: '1'
date_created: 2023-02-05T17:24:23Z
date_published: 2022-09-06T00:00:00Z
date_updated: 2026-07-07T13:37:45Z
day: '06'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.4230/LIPIcs.CONCUR.2022.14
ec_funded: 1
file:
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  date_updated: 2023-02-06T09:21:09Z
  file_id: '12520'
  file_name: 2022_LIPICs_Henzinger2.pdf
  file_size: 717940
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file_date_updated: 2023-02-06T09:21:09Z
has_accepted_license: '1'
intvolume: '       243'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: 14:1-14:21
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: 33rd International Conference on Concurrency Theory
publication_identifier:
  isbn:
  - '9783959772464'
  issn:
  - 1868-8969
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
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status: public
title: History-deterministic timed automata
tmp:
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  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 243
year: '2022'
...
---
_id: '11775'
abstract:
- lang: eng
  text: 'Quantitative monitoring can be universal and approximate: For every finite
    sequence of observations, the specification provides a value and the monitor outputs
    a best-effort approximation of it. The quality of the approximation may depend
    on the resources that are available to the monitor. By taking to the limit the
    sequences of specification values and monitor outputs, we obtain precision-resource
    trade-offs also for limit monitoring. This paper provides a formal framework for
    studying such trade-offs using an abstract interpretation for monitors: For each
    natural number n, the aggregate semantics of a monitor at time n is an equivalence
    relation over all sequences of at most n observations so that two equivalent sequences
    are indistinguishable to the monitor and thus mapped to the same output. This
    abstract interpretation of quantitative monitors allows us to measure the number
    of equivalence classes (or “resource use”) that is necessary for a certain precision
    up to a certain time, or at any time. Our framework offers several insights. For
    example, we identify a family of specifications for which any resource-optimal
    exact limit monitor is independent of any error permitted over finite traces.
    Moreover, we present a specification for which any resource-optimal approximate
    limit monitor does not minimize its resource use at any time. '
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: Yes
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. Abstract monitors for quantitative specifications.
    In: <i>22nd International Conference on Runtime Verification</i>. Vol 13498. Springer
    Nature; 2022:200-220. doi:<a href="https://doi.org/10.1007/978-3-031-17196-3_11">10.1007/978-3-031-17196-3_11</a>'
  apa: 'Henzinger, T. A., Mazzocchi, N. A., &#38; Sarac, N. E. (2022). Abstract monitors
    for quantitative specifications. In <i>22nd International Conference on Runtime
    Verification</i> (Vol. 13498, pp. 200–220). Tbilisi, Georgia: Springer Nature.
    <a href="https://doi.org/10.1007/978-3-031-17196-3_11">https://doi.org/10.1007/978-3-031-17196-3_11</a>'
  chicago: Henzinger, Thomas A, Nicolas Adrien Mazzocchi, and Naci E Sarac. “Abstract
    Monitors for Quantitative Specifications.” In <i>22nd International Conference
    on Runtime Verification</i>, 13498:200–220. Springer Nature, 2022. <a href="https://doi.org/10.1007/978-3-031-17196-3_11">https://doi.org/10.1007/978-3-031-17196-3_11</a>.
  ieee: T. A. Henzinger, N. A. Mazzocchi, and N. E. Sarac, “Abstract monitors for
    quantitative specifications,” in <i>22nd International Conference on Runtime Verification</i>,
    Tbilisi, Georgia, 2022, vol. 13498, pp. 200–220.
  ista: 'Henzinger TA, Mazzocchi NA, Sarac NE. 2022. Abstract monitors for quantitative
    specifications. 22nd International Conference on Runtime Verification. RV: Runtime
    Verification, LNCS, vol. 13498, 200–220.'
  mla: Henzinger, Thomas A., et al. “Abstract Monitors for Quantitative Specifications.”
    <i>22nd International Conference on Runtime Verification</i>, vol. 13498, Springer
    Nature, 2022, pp. 200–20, doi:<a href="https://doi.org/10.1007/978-3-031-17196-3_11">10.1007/978-3-031-17196-3_11</a>.
  short: T.A. Henzinger, N.A. Mazzocchi, N.E. Sarac, in:, 22nd International Conference
    on Runtime Verification, Springer Nature, 2022, pp. 200–220.
conference:
  end_date: 2022-09-30
  location: Tbilisi, Georgia
  name: 'RV: Runtime Verification'
  start_date: 2022-09-28
corr_author: '1'
date_created: 2022-08-08T17:09:09Z
date_published: 2022-09-23T00:00:00Z
date_updated: 2026-07-27T12:48:18Z
day: '23'
ddc:
- '000'
department:
- _id: GradSch
- _id: ToHe
doi: 10.1007/978-3-031-17196-3_11
ec_funded: 1
external_id:
  isi:
  - '000866539700011'
file:
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  checksum: 05c7dcfbb9053a98f46441fb2eccb213
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  creator: dernst
  date_created: 2023-01-20T07:34:50Z
  date_updated: 2023-01-20T07:34:50Z
  file_id: '12317'
  file_name: 2022_LNCS_RV_Henzinger.pdf
  file_size: 477110
  relation: main_file
  success: 1
file_date_updated: 2023-01-20T07:34:50Z
has_accepted_license: '1'
intvolume: '     13498'
isi: 1
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: 200-220
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: 22nd International Conference on Runtime Verification
publication_identifier:
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
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    status: public
scopus_import: '1'
status: public
title: Abstract monitors for quantitative specifications
tmp:
  image: /images/cc_by.png
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  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: conference
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 13498
year: '2022'
...
---
OA_place: repository
_id: '11366'
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\r\ncome 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\r\nbut 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\r\nconjunction with adversarial robot learning
    can make adversarial training suitable for real-world robot applications. We evaluate
    a wide variety of robot learning tasks ranging from autonomous driving in a high-fidelity
    environment\r\namenable to sim-to-real deployment, to mobile robot gesture recognition.
    Our results demonstrate that, while these techniques make incremental improvements
    on the trade-off on a relative scale, the negative side-effects caused by\r\nadversarial
    training still outweigh the improvements by an order of magnitude. We conclude
    that more substantial advances in robust learning methods are necessary before
    they can benefit robot learning tasks in practice."
acknowledgement: "This work was supported in parts by the ERC-2020-AdG 101020093,
  National Science Foundation (NSF), and JP\r\nMorgan Graduate Fellowships. We thank
  Christoph Lampert for inspiring this work.\r\n"
article_number: '2204.07373'
article_processing_charge: No
arxiv: 1
author:
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
- first_name: 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>arXiv</i>. doi:<a href="https://doi.org/10.48550/arXiv.2204.07373">10.48550/arXiv.2204.07373</a>
  apa: Lechner, M., Amini, A., Rus, D., &#38; Henzinger, T. A. (n.d.). Revisiting
    the adversarial robustness-accuracy tradeoff in robot learning. <i>arXiv</i>.
    <a href="https://doi.org/10.48550/arXiv.2204.07373">https://doi.org/10.48550/arXiv.2204.07373</a>
  chicago: Lechner, Mathias, Alexander Amini, Daniela Rus, and Thomas A Henzinger.
    “Revisiting the Adversarial Robustness-Accuracy Tradeoff in Robot Learning.” <i>ArXiv</i>,
    n.d. <a href="https://doi.org/10.48550/arXiv.2204.07373">https://doi.org/10.48550/arXiv.2204.07373</a>.
  ieee: M. Lechner, A. Amini, D. Rus, and T. A. Henzinger, “Revisiting the adversarial
    robustness-accuracy tradeoff in robot learning,” <i>arXiv</i>. .
  ista: Lechner M, Amini A, Rus D, Henzinger TA. Revisiting the adversarial robustness-accuracy
    tradeoff in robot learning. arXiv, 2204.07373.
  mla: Lechner, Mathias, et al. “Revisiting the Adversarial Robustness-Accuracy Tradeoff
    in Robot Learning.” <i>ArXiv</i>, 2204.07373, doi:<a href="https://doi.org/10.48550/arXiv.2204.07373">10.48550/arXiv.2204.07373</a>.
  short: M. Lechner, A. Amini, D. Rus, T.A. Henzinger, ArXiv (n.d.).
corr_author: '1'
date_created: 2022-05-12T13:20:17Z
date_published: 2022-04-15T00:00:00Z
date_updated: 2026-08-12T06:40:15Z
day: '15'
department:
- _id: ToHe
doi: 10.48550/arXiv.2204.07373
ec_funded: 1
external_id:
  arxiv:
  - '2204.07373'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2204.07373
month: '04'
oa: 1
oa_version: Preprint
project:
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication: arXiv
publication_status: draft
related_material:
  record:
  - id: '11362'
    relation: dissertation_contains
    status: public
  - id: '12704'
    relation: later_version
    status: public
status: public
title: Revisiting the adversarial robustness-accuracy tradeoff in robot learning
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2022'
...
---
OA_place: publisher
_id: '11362'
abstract:
- lang: eng
  text: "Deep learning has enabled breakthroughs in challenging computing problems
    and has emerged as the standard problem-solving tool for computer vision and natural
    language processing tasks.\r\nOne exception to this trend is safety-critical tasks
    where robustness and resilience requirements contradict the black-box nature of
    neural networks. \r\nTo deploy deep learning methods for these tasks, it is vital
    to provide guarantees on neural network agents' safety and robustness criteria.
    \r\nThis can be achieved by developing formal verification methods to verify the
    safety and robustness properties of neural networks.\r\n\r\nOur goal is to design,
    develop and assess safety verification methods for neural networks to improve
    their reliability and trustworthiness in real-world applications.\r\nThis thesis
    establishes techniques for the verification of compressed and adversarially trained
    models as well as the design of novel neural networks for verifiably safe decision-making.\r\n\r\nFirst,
    we establish the problem of verifying quantized neural networks. Quantization
    is a technique that trades numerical precision for the computational efficiency
    of running a neural network and is widely adopted in industry.\r\nWe show that
    neglecting the reduced precision when verifying a neural network can lead to wrong
    conclusions about the robustness and safety of the network, highlighting that
    novel techniques for quantized network verification are necessary. We introduce
    several bit-exact verification methods explicitly designed for quantized neural
    networks and experimentally confirm on realistic networks that the network's robustness
    and other formal properties are affected by the quantization.\r\n\r\nFurthermore,
    we perform a case study providing evidence that adversarial training, a standard
    technique for making neural networks more robust, has detrimental effects on the
    network's performance. This robustness-accuracy tradeoff has been studied before
    regarding the accuracy obtained on classification datasets where each data point
    is independent of all other data points. On the other hand, we investigate the
    tradeoff empirically in robot learning settings where a both, a high accuracy
    and a high robustness, are desirable.\r\nOur results suggest that the negative
    side-effects of adversarial training outweigh its robustness benefits in practice.\r\n\r\nFinally,
    we consider the problem of verifying safety when running a Bayesian neural network
    policy in a feedback loop with systems over the infinite time horizon. Bayesian
    neural networks are probabilistic models for learning uncertainties in the data
    and are therefore often used on robotic and healthcare applications where data
    is inherently stochastic.\r\nWe introduce a method for recalibrating Bayesian
    neural networks so that they yield probability distributions over safe decisions
    only.\r\nOur method learns a safety certificate that guarantees safety over the
    infinite time horizon to determine which decisions are safe in every possible
    state of the system.\r\nWe demonstrate the effectiveness of our approach on a
    series of reinforcement learning benchmarks."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
citation:
  ama: Lechner M. Learning verifiable representations. 2022. doi:<a href="https://doi.org/10.15479/at:ista:11362">10.15479/at:ista:11362</a>
  apa: Lechner, M. (2022). <i>Learning verifiable representations</i>. Institute of
    Science and Technology Austria. <a href="https://doi.org/10.15479/at:ista:11362">https://doi.org/10.15479/at:ista:11362</a>
  chicago: Lechner, Mathias. “Learning Verifiable Representations.” Institute of Science
    and Technology Austria, 2022. <a href="https://doi.org/10.15479/at:ista:11362">https://doi.org/10.15479/at:ista:11362</a>.
  ieee: M. Lechner, “Learning verifiable representations,” Institute of Science and
    Technology Austria, 2022.
  ista: Lechner M. 2022. Learning verifiable representations. Institute of Science
    and Technology Austria.
  mla: Lechner, Mathias. <i>Learning Verifiable Representations</i>. Institute of
    Science and Technology Austria, 2022, doi:<a href="https://doi.org/10.15479/at:ista:11362">10.15479/at:ista:11362</a>.
  short: M. Lechner, Learning Verifiable Representations, Institute of Science and
    Technology Austria, 2022.
corr_author: '1'
date_created: 2022-05-12T07:14:01Z
date_published: 2022-05-12T00:00:00Z
date_updated: 2026-08-19T09:28:05Z
day: '12'
ddc:
- '004'
degree_awarded: PhD
department:
- _id: GradSch
- _id: ToHe
doi: 10.15479/at:ista:11362
ec_funded: 1
file:
- access_level: closed
  checksum: 8eefa9c7c10ca7e1a2ccdd731962a645
  content_type: application/zip
  creator: mlechner
  date_created: 2022-05-13T12:33:26Z
  date_updated: 2022-05-13T12:49:00Z
  file_id: '11378'
  file_name: src.zip
  file_size: 13210143
  relation: source_file
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  content_type: application/pdf
  creator: mlechner
  date_created: 2022-05-16T08:02:28Z
  date_updated: 2022-05-17T15:19:39Z
  file_id: '11382'
  file_name: thesis_main-a2.pdf
  file_size: 2732536
  relation: main_file
file_date_updated: 2022-05-17T15:19:39Z
has_accepted_license: '1'
keyword:
- neural networks
- verification
- machine learning
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nd/4.0/
month: '05'
oa: 1
oa_version: Published Version
page: '124'
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
- _id: 62781420-2b32-11ec-9570-8d9b63373d4d
  call_identifier: H2020
  grant_number: '101020093'
  name: Vigilant Algorithmic Monitoring of Software
publication_identifier:
  isbn:
  - 978-3-99078-017-6
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
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  - id: '11366'
    relation: part_of_dissertation
    status: public
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    relation: part_of_dissertation
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  - id: '10667'
    relation: part_of_dissertation
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    relation: part_of_dissertation
    status: public
status: public
supervisor:
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
title: Learning verifiable representations
tmp:
  image: /image/cc_by_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nd/4.0/legalcode
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  short: CC BY-ND (4.0)
type: dissertation
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
year: '2022'
...
---
_id: '10108'
abstract:
- lang: eng
  text: We argue that the time is ripe to investigate differential monitoring, in
    which the specification of a program's behavior is implicitly given by a second
    program implementing the same informal specification. Similar ideas have been
    proposed before, and are currently implemented in restricted form for testing
    and specialized run-time analyses, aspects of which we combine. We discuss the
    challenges of implementing differential monitoring as a general-purpose, black-box
    run-time monitoring framework, and present promising results of a preliminary
    implementation, showing low monitoring overheads for diverse programs.
acknowledgement: The authors would like to thank Borzoo Bonakdarpour, Derek Dreyer,
  Adrian Francalanza, Owolabi Legunsen, Mae Milano, Manuel Rigger, Cesar Sanchez,
  and the members of the IST Verification Seminar for their helpful comments and insights
  on various stages of this work, as well as the reviewers of RV’21 for their helpful
  suggestions on the actual paper.
alternative_title:
- LNCS
article_processing_charge: No
author:
- first_name: Fabian
  full_name: Mühlböck, Fabian
  id: 6395C5F6-89DF-11E9-9C97-6BDFE5697425
  last_name: Mühlböck
  orcid: 0000-0003-1548-0177
- 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: 'Mühlböck F, Henzinger TA. Differential monitoring. In: <i>International Conference
    on Runtime Verification</i>. Vol 12974. Cham: Springer Nature; 2021:231-243. doi:<a
    href="https://doi.org/10.1007/978-3-030-88494-9_12">10.1007/978-3-030-88494-9_12</a>'
  apa: 'Mühlböck, F., &#38; Henzinger, T. A. (2021). Differential monitoring. In <i>International
    Conference on Runtime Verification</i> (Vol. 12974, pp. 231–243). Cham: Springer
    Nature. <a href="https://doi.org/10.1007/978-3-030-88494-9_12">https://doi.org/10.1007/978-3-030-88494-9_12</a>'
  chicago: 'Mühlböck, Fabian, and Thomas A Henzinger. “Differential Monitoring.” In
    <i>International Conference on Runtime Verification</i>, 12974:231–43. Cham: Springer
    Nature, 2021. <a href="https://doi.org/10.1007/978-3-030-88494-9_12">https://doi.org/10.1007/978-3-030-88494-9_12</a>.'
  ieee: F. Mühlböck and T. A. Henzinger, “Differential monitoring,” in <i>International
    Conference on Runtime Verification</i>, Virtual, 2021, vol. 12974, pp. 231–243.
  ista: 'Mühlböck F, Henzinger TA. 2021. Differential monitoring. International Conference
    on Runtime Verification. RV: Runtime Verification, LNCS, vol. 12974, 231–243.'
  mla: Mühlböck, Fabian, and Thomas A. Henzinger. “Differential Monitoring.” <i>International
    Conference on Runtime Verification</i>, vol. 12974, Springer Nature, 2021, pp.
    231–43, doi:<a href="https://doi.org/10.1007/978-3-030-88494-9_12">10.1007/978-3-030-88494-9_12</a>.
  short: F. Mühlböck, T.A. Henzinger, in:, International Conference on Runtime Verification,
    Springer Nature, Cham, 2021, pp. 231–243.
conference:
  end_date: 2021-10-14
  location: Virtual
  name: 'RV: Runtime Verification'
  start_date: 2021-10-11
corr_author: '1'
date_created: 2021-10-07T23:30:10Z
date_published: 2021-10-06T00:00:00Z
date_updated: 2025-04-15T06:26:12Z
day: '06'
ddc:
- '005'
department:
- _id: ToHe
doi: 10.1007/978-3-030-88494-9_12
external_id:
  isi:
  - '000719383800012'
file:
- access_level: open_access
  checksum: 554c7fdb259eda703a8b6328a6dad55a
  content_type: application/pdf
  creator: fmuehlbo
  date_created: 2021-10-07T23:32:18Z
  date_updated: 2021-10-07T23:32:18Z
  file_id: '10109'
  file_name: differentialmonitoring-cameraready-openaccess.pdf
  file_size: 350632
  relation: main_file
  success: 1
file_date_updated: 2021-10-07T23:32:18Z
has_accepted_license: '1'
intvolume: '     12974'
isi: 1
keyword:
- run-time verification
- software engineering
- implicit specification
language:
- iso: eng
month: '10'
oa: 1
oa_version: Preprint
page: 231-243
place: Cham
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: International Conference on Runtime Verification
publication_identifier:
  eisbn:
  - 978-3-030-88494-9
  eissn:
  - 1611-3349
  isbn:
  - 978-3-030-88493-2
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '9946'
    relation: extended_version
    status: public
scopus_import: '1'
status: public
title: Differential monitoring
type: conference
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 12974
year: '2021'
...
---
_id: '10153'
abstract:
- lang: eng
  text: "Gradual typing is a principled means for mixing typed and untyped code. But
    typed and untyped code often exhibit different programming patterns. There is
    already substantial research investigating gradually giving types to code exhibiting
    typical untyped patterns, and some research investigating gradually removing types
    from code exhibiting typical typed patterns. This paper investigates how to extend
    these established gradual-typing concepts to give formal guarantees not only about
    how to change types as code evolves but also about how to change such programming
    patterns as well.\r\n\r\nIn particular, we explore mixing untyped \"structural\"
    code with typed \"nominal\" code in an object-oriented language. But whereas previous
    work only allowed \"nominal\" objects to be treated as \"structural\" objects,
    we also allow \"structural\" objects to dynamically acquire certain nominal types,
    namely interfaces. We present a calculus that supports such \"cross-paradigm\"
    code migration and interoperation in a manner satisfying both the static and dynamic
    gradual guarantees, and demonstrate that the calculus can be implemented efficiently."
acknowledgement: "We thank the reviewers for their valuable suggestions towards improving
  the paper. We also \r\nthank Mae Milano and Adrian Sampson, as well as the members
  of the Programming Languages Discussion Group at Cornell University and of the Programming
  Research Laboratory at Northeastern University, for their helpful feedback on preliminary
  findings of this work.\r\n\r\nThis material is based upon work supported in part
  by the National Science Foundation (NSF) through grant CCF-1350182 and the Austrian
  Science Fund (FWF) through grant Z211-N23 (Wittgenstein~Award).\r\nAny opinions,
  findings, and conclusions or recommendations expressed in this material are those
  of the authors and do not necessarily reflect the views of the NSF or the FWF."
article_number: '127'
article_processing_charge: No
article_type: original
author:
- first_name: Fabian
  full_name: Mühlböck, Fabian
  id: 6395C5F6-89DF-11E9-9C97-6BDFE5697425
  last_name: Mühlböck
  orcid: 0000-0003-1548-0177
- first_name: Ross
  full_name: Tate, Ross
  last_name: Tate
citation:
  ama: Mühlböck F, Tate R. Transitioning from structural to nominal code with efficient
    gradual typing. <i>Proceedings of the ACM on Programming Languages</i>. 2021;5.
    doi:<a href="https://doi.org/10.1145/3485504">10.1145/3485504</a>
  apa: 'Mühlböck, F., &#38; Tate, R. (2021). Transitioning from structural to nominal
    code with efficient gradual typing. <i>Proceedings of the ACM on Programming Languages</i>.
    Chicago, IL, United States: Association for Computing Machinery. <a href="https://doi.org/10.1145/3485504">https://doi.org/10.1145/3485504</a>'
  chicago: Mühlböck, Fabian, and Ross Tate. “Transitioning from Structural to Nominal
    Code with Efficient Gradual Typing.” <i>Proceedings of the ACM on Programming
    Languages</i>. Association for Computing Machinery, 2021. <a href="https://doi.org/10.1145/3485504">https://doi.org/10.1145/3485504</a>.
  ieee: F. Mühlböck and R. Tate, “Transitioning from structural to nominal code with
    efficient gradual typing,” <i>Proceedings of the ACM on Programming Languages</i>,
    vol. 5. Association for Computing Machinery, 2021.
  ista: Mühlböck F, Tate R. 2021. Transitioning from structural to nominal code with
    efficient gradual typing. Proceedings of the ACM on Programming Languages. 5,
    127.
  mla: Mühlböck, Fabian, and Ross Tate. “Transitioning from Structural to Nominal
    Code with Efficient Gradual Typing.” <i>Proceedings of the ACM on Programming
    Languages</i>, vol. 5, 127, Association for Computing Machinery, 2021, doi:<a
    href="https://doi.org/10.1145/3485504">10.1145/3485504</a>.
  short: F. Mühlböck, R. Tate, Proceedings of the ACM on Programming Languages 5 (2021).
conference:
  end_date: 2021-10-23
  location: Chicago, IL, United States
  name: 'OOPSLA: Object-Oriented Programming, Systems, Languages, and Applications'
  start_date: 2021-10-17
date_created: 2021-10-19T12:48:44Z
date_published: 2021-10-15T00:00:00Z
date_updated: 2025-04-15T06:25:55Z
day: '15'
ddc:
- '005'
department:
- _id: ToHe
doi: 10.1145/3485504
file:
- access_level: open_access
  checksum: 71011efd2da771cafdec7f0d9693f8c1
  content_type: application/pdf
  creator: fmuehlbo
  date_created: 2021-10-19T12:52:23Z
  date_updated: 2021-10-19T12:52:23Z
  file_id: '10154'
  file_name: monnom-oopsla21.pdf
  file_size: 770269
  relation: main_file
  success: 1
file_date_updated: 2021-10-19T12:52:23Z
has_accepted_license: '1'
intvolume: '         5'
keyword:
- gradual typing
- gradual guarantee
- nominal
- structural
- call tags
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: Proceedings of the ACM on Programming Languages
publication_identifier:
  eissn:
  - 2475-1421
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: Transitioning from structural to nominal code with efficient gradual typing
tmp:
  image: /image/cc_by_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nd/4.0/legalcode
  name: Creative Commons Attribution-NoDerivatives 4.0 International (CC BY-ND 4.0)
  short: CC BY-ND (4.0)
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 5
year: '2021'
...
---
_id: '10206'
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. The typical approach is to detect inputs from
    novel classes and retrain the classifier on an augmented dataset. However, not
    only the classifier but also the detection mechanism needs to adapt in order to
    distinguish between newly learned and yet unknown input classes. To address this
    challenge, we introduce an algorithmic framework for active monitoring of a neural
    network. A monitor wrapped in our framework operates in parallel with the neural
    network and interacts with a human user via a series of interpretable labeling
    queries for incremental adaptation. In addition, we propose an adaptive quantitative
    monitor to improve precision. An experimental evaluation on a diverse set of benchmarks
    with varying numbers of classes confirms the benefits of our active monitoring
    framework in dynamic scenarios.
acknowledgement: We thank Christoph Lampert and Alex Greengold for fruitful discussions.
  This research was supported in part by the Simons Institute for the Theory of Computing,
  the Austrian Science Fund (FWF) under grant Z211-N23 (Wittgenstein Award), and the
  European Union’s Horizon 2020 research and innovation programme under the Marie
  Skłodowska-Curie grant agreement No. 754411.
alternative_title:
- LNCS
article_processing_charge: No
arxiv: 1
author:
- 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: 'Lukina A, Schilling C, Henzinger TA. Into the unknown: active monitoring of neural
    networks. In: <i>21st International Conference on Runtime Verification</i>. Vol
    12974. Cham: Springer Nature; 2021:42-61. doi:<a href="https://doi.org/10.1007/978-3-030-88494-9_3">10.1007/978-3-030-88494-9_3</a>'
  apa: 'Lukina, A., Schilling, C., &#38; Henzinger, T. A. (2021). Into the unknown:
    active monitoring of neural networks. In <i>21st International Conference on Runtime
    Verification</i> (Vol. 12974, pp. 42–61). Cham: Springer Nature. <a href="https://doi.org/10.1007/978-3-030-88494-9_3">https://doi.org/10.1007/978-3-030-88494-9_3</a>'
  chicago: 'Lukina, Anna, Christian Schilling, and Thomas A Henzinger. “Into the Unknown:
    Active Monitoring of Neural Networks.” In <i>21st International Conference on
    Runtime Verification</i>, 12974:42–61. Cham: Springer Nature, 2021. <a href="https://doi.org/10.1007/978-3-030-88494-9_3">https://doi.org/10.1007/978-3-030-88494-9_3</a>.'
  ieee: 'A. Lukina, C. Schilling, and T. A. Henzinger, “Into the unknown: active monitoring
    of neural networks,” in <i>21st International Conference on Runtime Verification</i>,
    Virtual, 2021, vol. 12974, pp. 42–61.'
  ista: 'Lukina A, Schilling C, Henzinger TA. 2021. Into the unknown: active monitoring
    of neural networks. 21st International Conference on Runtime Verification. RV:
    Runtime Verification, LNCS, vol. 12974, 42–61.'
  mla: 'Lukina, Anna, et al. “Into the Unknown: Active Monitoring of Neural Networks.”
    <i>21st International Conference on Runtime Verification</i>, vol. 12974, Springer
    Nature, 2021, pp. 42–61, doi:<a href="https://doi.org/10.1007/978-3-030-88494-9_3">10.1007/978-3-030-88494-9_3</a>.'
  short: A. Lukina, C. Schilling, T.A. Henzinger, in:, 21st International Conference
    on Runtime Verification, Springer Nature, Cham, 2021, pp. 42–61.
conference:
  end_date: 2021-10-14
  location: Virtual
  name: 'RV: Runtime Verification'
  start_date: 2021-10-11
corr_author: '1'
date_created: 2021-10-31T23:01:31Z
date_published: 2021-10-06T00:00:00Z
date_updated: 2025-04-15T06:26:14Z
day: '06'
department:
- _id: ToHe
doi: 10.1007/978-3-030-88494-9_3
ec_funded: 1
external_id:
  arxiv:
  - '2009.06429'
  isi:
  - '000719383800003'
isi: 1
keyword:
- monitoring
- neural networks
- novelty detection
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2009.06429
month: '10'
oa: 1
oa_version: Preprint
page: 42-61
place: Cham
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: 21st International Conference on Runtime Verification
publication_identifier:
  eisbn:
  - 978-3-030-88494-9
  eissn:
  - 1611-3349
  isbn:
  - 9-783-0308-8493-2
  issn:
  - 0302-9743
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  record:
  - id: '13234'
    relation: extended_version
    status: public
scopus_import: '1'
status: public
title: 'Into the unknown: active monitoring of neural networks'
type: conference
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: '12974 '
year: '2021'
...
---
_id: '10404'
abstract:
- lang: eng
  text: While convolutional neural networks (CNNs) have found wide adoption as state-of-the-art
    models for image-related tasks, their predictions are often highly sensitive to
    small input perturbations, which the human vision is robust against. This paper
    presents Perturber, a web-based application that allows users to instantaneously
    explore how CNN activations and predictions evolve when a 3D input scene is interactively
    perturbed. Perturber offers a large variety of scene modifications, such as camera
    controls, lighting and shading effects, background modifications, object morphing,
    as well as adversarial attacks, to facilitate the discovery of potential vulnerabilities.
    Fine-tuned model versions can be directly compared for qualitative evaluation
    of their robustness. Case studies with machine learning experts have shown that
    Perturber helps users to quickly generate hypotheses about model vulnerabilities
    and to qualitatively compare model behavior. Using quantitative analyses, we could
    replicate users’ insights with other CNN architectures and input images, yielding
    new insights about the vulnerability of adversarially trained models.
acknowledgement: "We thank Robert Geirhos and Roland Zimmermann for their participation
  in the case study and valuable feedback, Chris Olah and Nick Cammarata for valuable
  discussions in the early phase of the project, as well as the Distill Slack workspace
  as a platform for discussions. M.L. is supported in part by the Austrian Science
  Fund (FWF) under grant Z211-N23 (Wittgenstein Award). J.B. is supported by the German
  Federal Ministry of Education and Research\r\n(BMBF) through the Competence Center
  for Machine Learning (TUE.AI, FKZ 01IS18039A) and the International Max Planck Research
  School for Intelligent Systems (IMPRS-IS). R.H. is partially supported by Boeing
  and Horizon-2020 ECSEL (grant 783163, iDev40).\r\n"
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Stefan
  full_name: Sietzen, Stefan
  last_name: Sietzen
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
- first_name: Judy
  full_name: Borowski, Judy
  last_name: Borowski
- first_name: Ramin
  full_name: Hasani, Ramin
  last_name: Hasani
- first_name: Manuela
  full_name: Waldner, Manuela
  last_name: Waldner
citation:
  ama: Sietzen S, Lechner M, Borowski J, Hasani R, Waldner M. Interactive analysis
    of CNN robustness. <i>Computer Graphics Forum</i>. 2021;40(7):253-264. doi:<a
    href="https://doi.org/10.1111/cgf.14418">10.1111/cgf.14418</a>
  apa: Sietzen, S., Lechner, M., Borowski, J., Hasani, R., &#38; Waldner, M. (2021).
    Interactive analysis of CNN robustness. <i>Computer Graphics Forum</i>. Wiley.
    <a href="https://doi.org/10.1111/cgf.14418">https://doi.org/10.1111/cgf.14418</a>
  chicago: Sietzen, Stefan, Mathias Lechner, Judy Borowski, Ramin Hasani, and Manuela
    Waldner. “Interactive Analysis of CNN Robustness.” <i>Computer Graphics Forum</i>.
    Wiley, 2021. <a href="https://doi.org/10.1111/cgf.14418">https://doi.org/10.1111/cgf.14418</a>.
  ieee: S. Sietzen, M. Lechner, J. Borowski, R. Hasani, and M. Waldner, “Interactive
    analysis of CNN robustness,” <i>Computer Graphics Forum</i>, vol. 40, no. 7. Wiley,
    pp. 253–264, 2021.
  ista: Sietzen S, Lechner M, Borowski J, Hasani R, Waldner M. 2021. Interactive analysis
    of CNN robustness. Computer Graphics Forum. 40(7), 253–264.
  mla: Sietzen, Stefan, et al. “Interactive Analysis of CNN Robustness.” <i>Computer
    Graphics Forum</i>, vol. 40, no. 7, Wiley, 2021, pp. 253–64, doi:<a href="https://doi.org/10.1111/cgf.14418">10.1111/cgf.14418</a>.
  short: S. Sietzen, M. Lechner, J. Borowski, R. Hasani, M. Waldner, Computer Graphics
    Forum 40 (2021) 253–264.
date_created: 2021-12-05T23:01:40Z
date_published: 2021-11-27T00:00:00Z
date_updated: 2025-04-15T06:25:55Z
day: '27'
department:
- _id: ToHe
doi: 10.1111/cgf.14418
external_id:
  arxiv:
  - '2110.07667'
  isi:
  - '000722952000024'
intvolume: '        40'
isi: 1
issue: '7'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2110.07667
month: '11'
oa: 1
oa_version: Preprint
page: 253-264
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: Computer Graphics Forum
publication_identifier:
  eissn:
  - 1467-8659
  issn:
  - 0167-7055
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Interactive analysis of CNN robustness
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 40
year: '2021'
...
---
_id: '10668'
abstract:
- lang: eng
  text: 'Robustness to variations in lighting conditions is a key objective for any
    deep vision system. To this end, our paper extends the receptive field of convolutional
    neural networks with two residual components, ubiquitous in the visual processing
    system of vertebrates: On-center and off-center pathways, with an excitatory center
    and inhibitory surround; OOCS for short. The On-center pathway is excited by the
    presence of a light stimulus in its center, but not in its surround, whereas the
    Off-center pathway is excited by the absence of a light stimulus in its center,
    but not in its surround. We design OOCS pathways via a difference of Gaussians,
    with their variance computed analytically from the size of the receptive fields.
    OOCS pathways complement each other in their response to light stimuli, ensuring
    this way a strong edge-detection capability, and as a result an accurate and robust
    inference under challenging lighting conditions. We provide extensive empirical
    evidence showing that networks supplied with OOCS pathways gain accuracy and illumination-robustness
    from the novel edge representation, compared to other baselines.'
acknowledgement: Z.B. is supported by the Doctoral College Resilient Embedded Systems,
  which is run jointly by the TU Wien’s Faculty of Informatics and the UAS Technikum
  Wien. R.G. is partially supported by the Horizon 2020 Era-Permed project Persorad,
  and ECSEL Project grant no. 783163 (iDev40). R.H and D.R were partially supported
  by Boeing and MIT. M.L. is supported in part by the Austrian Science Fund (FWF)
  under grant Z211-N23 (Wittgenstein Award).
alternative_title:
- PMLR
article_processing_charge: No
arxiv: 1
author:
- first_name: Zahra
  full_name: Babaiee, Zahra
  last_name: Babaiee
- first_name: Ramin
  full_name: Hasani, Ramin
  last_name: Hasani
- first_name: Mathias
  full_name: Lechner, Mathias
  id: 3DC22916-F248-11E8-B48F-1D18A9856A87
  last_name: Lechner
- first_name: Daniela
  full_name: Rus, Daniela
  last_name: Rus
- first_name: Radu
  full_name: Grosu, Radu
  last_name: Grosu
citation:
  ama: 'Babaiee Z, Hasani R, Lechner M, Rus D, Grosu R. On-off center-surround receptive
    fields for accurate and robust image classification. In: <i>Proceedings of the
    38th International Conference on Machine Learning</i>. Vol 139. ML Research Press;
    2021:478-489.'
  apa: 'Babaiee, Z., Hasani, R., Lechner, M., Rus, D., &#38; Grosu, R. (2021). On-off
    center-surround receptive fields for accurate and robust image classification.
    In <i>Proceedings of the 38th International Conference on Machine Learning</i>
    (Vol. 139, pp. 478–489). Virtual: ML Research Press.'
  chicago: Babaiee, Zahra, Ramin Hasani, Mathias Lechner, Daniela Rus, and Radu Grosu.
    “On-off Center-Surround Receptive Fields for Accurate and Robust Image Classification.”
    In <i>Proceedings of the 38th International Conference on Machine Learning</i>,
    139:478–89. ML Research Press, 2021.
  ieee: Z. Babaiee, R. Hasani, M. Lechner, D. Rus, and R. Grosu, “On-off center-surround
    receptive fields for accurate and robust image classification,” in <i>Proceedings
    of the 38th International Conference on Machine Learning</i>, Virtual, 2021, vol.
    139, pp. 478–489.
  ista: 'Babaiee Z, Hasani R, Lechner M, Rus D, Grosu R. 2021. On-off center-surround
    receptive fields for accurate and robust image classification. Proceedings of
    the 38th International Conference on Machine Learning. ML: Machine Learning, PMLR,
    vol. 139, 478–489.'
  mla: Babaiee, Zahra, et al. “On-off Center-Surround Receptive Fields for Accurate
    and Robust Image Classification.” <i>Proceedings of the 38th International Conference
    on Machine Learning</i>, vol. 139, ML Research Press, 2021, pp. 478–89.
  short: Z. Babaiee, R. Hasani, M. Lechner, D. Rus, R. Grosu, in:, Proceedings of
    the 38th International Conference on Machine Learning, ML Research Press, 2021,
    pp. 478–489.
conference:
  end_date: 2021-07-24
  location: Virtual
  name: 'ML: Machine Learning'
  start_date: 2021-07-18
date_created: 2022-01-25T15:46:33Z
date_published: 2021-07-01T00:00:00Z
date_updated: 2025-05-19T11:28:08Z
day: '01'
ddc:
- '000'
department:
- _id: GradSch
- _id: ToHe
external_id:
  arxiv:
  - '2106.07091'
file:
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- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/3.0/
main_file_link:
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  url: https://proceedings.mlr.press/v139/babaiee21a
month: '07'
oa: 1
oa_version: Published Version
page: 478-489
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: Proceedings of the 38th International Conference on Machine Learning
publication_identifier:
  issn:
  - 2640-3498
publication_status: published
publisher: ML Research Press
quality_controlled: '1'
status: public
title: On-off center-surround receptive fields for accurate and robust image classification
tmp:
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    3.0)
  short: CC BY-NC-ND (3.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 139
year: '2021'
...
---
_id: '10688'
abstract:
- lang: eng
  text: "Civl is a static verifier for concurrent programs designed around the conceptual
    framework of layered refinement,\r\nwhich views the task of verifying a program
    as a sequence of program simplification steps each justified by its own invariant.
    Civl verifies a layered concurrent program that compactly expresses all the programs
    in this sequence and the supporting invariants. This paper presents the design
    and implementation of the Civl verifier."
acknowledgement: This research was performed while Bernhard Kragl was at IST Austria,
  supported in part by the Austrian Science Fund (FWF) under grant Z211-N23 (Wittgenstein
  Award).
alternative_title:
- Conference Series
article_processing_charge: No
author:
- first_name: Bernhard
  full_name: Kragl, Bernhard
  id: 320FC952-F248-11E8-B48F-1D18A9856A87
  last_name: Kragl
  orcid: 0000-0001-7745-9117
- first_name: Shaz
  full_name: Qadeer, Shaz
  last_name: Qadeer
citation:
  ama: 'Kragl B, Qadeer S. The Civl verifier. In: Ruzica P, Whalen MW, eds. <i>Proceedings
    of the 21st Conference on Formal Methods in Computer-Aided Design</i>. Vol 2.
    TU Wien Academic Press; 2021:143–152. doi:<a href="https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23">10.34727/2021/isbn.978-3-85448-046-4_23</a>'
  apa: 'Kragl, B., &#38; Qadeer, S. (2021). The Civl verifier. In P. Ruzica &#38;
    M. W. Whalen (Eds.), <i>Proceedings of the 21st Conference on Formal Methods in
    Computer-Aided Design</i> (Vol. 2, pp. 143–152). Virtual: TU Wien Academic Press.
    <a href="https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23">https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23</a>'
  chicago: Kragl, Bernhard, and Shaz Qadeer. “The Civl Verifier.” In <i>Proceedings
    of the 21st Conference on Formal Methods in Computer-Aided Design</i>, edited
    by Piskac Ruzica and Michael W. Whalen, 2:143–152. TU Wien Academic Press, 2021.
    <a href="https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23">https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23</a>.
  ieee: B. Kragl and S. Qadeer, “The Civl verifier,” in <i>Proceedings of the 21st
    Conference on Formal Methods in Computer-Aided Design</i>, Virtual, 2021, vol.
    2, pp. 143–152.
  ista: 'Kragl B, Qadeer S. 2021. The Civl verifier. Proceedings of the 21st Conference
    on Formal Methods in Computer-Aided Design. FMCAD: Formal Methods in Computer-Aided
    Design, Conference Series, vol. 2, 143–152.'
  mla: Kragl, Bernhard, and Shaz Qadeer. “The Civl Verifier.” <i>Proceedings of the
    21st Conference on Formal Methods in Computer-Aided Design</i>, edited by Piskac
    Ruzica and Michael W. Whalen, vol. 2, TU Wien Academic Press, 2021, pp. 143–152,
    doi:<a href="https://doi.org/10.34727/2021/isbn.978-3-85448-046-4_23">10.34727/2021/isbn.978-3-85448-046-4_23</a>.
  short: B. Kragl, S. Qadeer, in:, P. Ruzica, M.W. Whalen (Eds.), Proceedings of the
    21st Conference on Formal Methods in Computer-Aided Design, TU Wien Academic Press,
    2021, pp. 143–152.
conference:
  end_date: 2021-10-22
  location: Virtual
  name: 'FMCAD: Formal Methods in Computer-Aided Design'
  start_date: 2021-10-20
corr_author: '1'
date_created: 2022-01-26T08:01:30Z
date_published: 2021-10-01T00:00:00Z
date_updated: 2025-04-15T06:25:56Z
day: '01'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.34727/2021/isbn.978-3-85448-046-4_23
editor:
- first_name: Piskac
  full_name: Ruzica, Piskac
  last_name: Ruzica
- first_name: Michael W.
  full_name: Whalen, Michael W.
  last_name: Whalen
file:
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  checksum: 35438ac9f9750340b7f8ae4ae3220d9f
  content_type: application/pdf
  creator: cchlebak
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  date_updated: 2022-01-26T08:04:29Z
  file_id: '10689'
  file_name: 2021_FCAD2021_Kragl.pdf
  file_size: 390555
  relation: main_file
  success: 1
file_date_updated: 2022-01-26T08:04:29Z
has_accepted_license: '1'
intvolume: '         2'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 143–152
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: Proceedings of the 21st Conference on Formal Methods in Computer-Aided
  Design
publication_identifier:
  isbn:
  - 978-3-85448-046-4
publication_status: published
publisher: TU Wien Academic Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: The Civl verifier
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: 2
year: '2021'
...
---
_id: '8912'
abstract:
- lang: eng
  text: "For automata, synchronization, the problem of bringing an automaton to a
    particular state regardless of its initial state, is important. It has several
    applications in practice and is related to a fifty-year-old conjecture on the
    length of the shortest synchronizing word. Although using shorter words increases
    the effectiveness in practice, finding a shortest one (which is not necessarily
    unique) is NP-hard. For this reason, there exist various heuristics in the literature.
    However, high-quality heuristics such as SynchroP producing relatively shorter
    sequences are very expensive and can take hours when the automaton has tens of
    thousands of states. The SynchroP heuristic has been frequently used as a benchmark
    to evaluate the performance of the new heuristics. In this work, we first improve
    the runtime of SynchroP and its variants by using algorithmic techniques. We then
    focus on adapting SynchroP for many-core architectures,\r\nand overall, we obtain
    more than 1000× speedup on GPUs compared to naive sequential implementation that
    has been frequently used as a benchmark to evaluate new heuristics in the literature.
    We also propose two SynchroP variants and evaluate their performance."
acknowledgement: This work was supported by The Scientific and Technological Research
  Council of Turkey (TUBITAK) [grant number 114E569]. This research was supported
  in part by the Austrian Science Fund (FWF) under grant Z211-N23 (Wittgenstein Award).
  We would like to thank the authors of (Roman & Szykula, 2015) for providing their
  heuristics implementations, which we used to compare our SynchroP implementation
  as given in Table 11.
article_number: '114203'
article_processing_charge: No
article_type: original
author:
- first_name: Naci E
  full_name: Sarac, Naci E
  id: 8C6B42F8-C8E6-11E9-A03A-F2DCE5697425
  last_name: Sarac
- first_name: Ömer Faruk
  full_name: Altun, Ömer Faruk
  last_name: Altun
- first_name: Kamil Tolga
  full_name: Atam, Kamil Tolga
  last_name: Atam
- first_name: Sertac
  full_name: Karahoda, Sertac
  last_name: Karahoda
- first_name: Kamer
  full_name: Kaya, Kamer
  last_name: Kaya
- first_name: Hüsnü
  full_name: Yenigün, Hüsnü
  last_name: Yenigün
citation:
  ama: Sarac NE, Altun ÖF, Atam KT, Karahoda S, Kaya K, Yenigün H. Boosting expensive
    synchronizing heuristics. <i>Expert Systems with Applications</i>. 2021;167(4).
    doi:<a href="https://doi.org/10.1016/j.eswa.2020.114203">10.1016/j.eswa.2020.114203</a>
  apa: Sarac, N. E., Altun, Ö. F., Atam, K. T., Karahoda, S., Kaya, K., &#38; Yenigün,
    H. (2021). Boosting expensive synchronizing heuristics. <i>Expert Systems with
    Applications</i>. Elsevier. <a href="https://doi.org/10.1016/j.eswa.2020.114203">https://doi.org/10.1016/j.eswa.2020.114203</a>
  chicago: Sarac, Naci E, Ömer Faruk Altun, Kamil Tolga Atam, Sertac Karahoda, Kamer
    Kaya, and Hüsnü Yenigün. “Boosting Expensive Synchronizing Heuristics.” <i>Expert
    Systems with Applications</i>. Elsevier, 2021. <a href="https://doi.org/10.1016/j.eswa.2020.114203">https://doi.org/10.1016/j.eswa.2020.114203</a>.
  ieee: N. E. Sarac, Ö. F. Altun, K. T. Atam, S. Karahoda, K. Kaya, and H. Yenigün,
    “Boosting expensive synchronizing heuristics,” <i>Expert Systems with Applications</i>,
    vol. 167, no. 4. Elsevier, 2021.
  ista: Sarac NE, Altun ÖF, Atam KT, Karahoda S, Kaya K, Yenigün H. 2021. Boosting
    expensive synchronizing heuristics. Expert Systems with Applications. 167(4),
    114203.
  mla: Sarac, Naci E., et al. “Boosting Expensive Synchronizing Heuristics.” <i>Expert
    Systems with Applications</i>, vol. 167, no. 4, 114203, Elsevier, 2021, doi:<a
    href="https://doi.org/10.1016/j.eswa.2020.114203">10.1016/j.eswa.2020.114203</a>.
  short: N.E. Sarac, Ö.F. Altun, K.T. Atam, S. Karahoda, K. Kaya, H. Yenigün, Expert
    Systems with Applications 167 (2021).
corr_author: '1'
date_created: 2020-12-02T13:34:25Z
date_published: 2021-04-01T00:00:00Z
date_updated: 2026-04-16T09:15:47Z
day: '01'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1016/j.eswa.2020.114203
external_id:
  isi:
  - '000640531100038'
file:
- access_level: open_access
  checksum: 600c2f81bc898a725bcfa7cf26ff4fed
  content_type: application/pdf
  creator: esarac
  date_created: 2020-12-02T13:33:51Z
  date_updated: 2020-12-02T13:33:51Z
  file_id: '8913'
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  file_size: 634967
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file_date_updated: 2020-12-02T13:33:51Z
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intvolume: '       167'
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issue: '4'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Submitted Version
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: Expert Systems with Applications
publication_identifier:
  eissn:
  - 1873-6793
  issn:
  - 0957-4174
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Boosting expensive synchronizing heuristics
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 167
year: '2021'
...
---
_id: '9200'
abstract:
- lang: eng
  text: Formal design of embedded and cyber-physical systems relies on mathematical
    modeling. In this paper, we consider the model class of hybrid automata whose
    dynamics are defined by affine differential equations. Given a set of time-series
    data, we present an algorithmic approach to synthesize a hybrid automaton exhibiting
    behavior that is close to the data, up to a specified precision, and changes in
    synchrony with the data. A fundamental problem in our synthesis algorithm is to
    check membership of a time series in a hybrid automaton. Our solution integrates
    reachability and optimization techniques for affine dynamical systems to obtain
    both a sufficient and a necessary condition for membership, combined in a refinement
    framework. The algorithm processes one time series at a time and hence can be
    interrupted, provide an intermediate result, and be resumed. We report experimental
    results demonstrating the applicability of our synthesis approach.
acknowledgement: This research was supported in part by the Austrian Science Fund
  (FWF) under grant Z211-N23 (Wittgenstein Award) and the European Union’s Horizon
  2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement
  No. 754411.
article_processing_charge: No
arxiv: 1
author:
- first_name: Miriam
  full_name: Garcia Soto, Miriam
  id: 4B3207F6-F248-11E8-B48F-1D18A9856A87
  last_name: Garcia Soto
  orcid: 0000-0003-2936-5719
- 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: Christian
  full_name: Schilling, Christian
  id: 3A2F4DCE-F248-11E8-B48F-1D18A9856A87
  last_name: Schilling
  orcid: 0000-0003-3658-1065
citation:
  ama: 'Garcia Soto M, Henzinger TA, Schilling C. Synthesis of hybrid automata with
    affine dynamics from time-series data. In: <i>HSCC ’21: Proceedings of the 24th
    International Conference on Hybrid Systems: Computation and Control</i>. Association
    for Computing Machinery; 2021:2102.12734. doi:<a href="https://doi.org/10.1145/3447928.3456704">10.1145/3447928.3456704</a>'
  apa: 'Garcia Soto, M., Henzinger, T. A., &#38; Schilling, C. (2021). Synthesis of
    hybrid automata with affine dynamics from time-series data. In <i>HSCC ’21: Proceedings
    of the 24th International Conference on Hybrid Systems: Computation and Control</i>
    (p. 2102.12734). Nashville, TN, United States: Association for Computing Machinery.
    <a href="https://doi.org/10.1145/3447928.3456704">https://doi.org/10.1145/3447928.3456704</a>'
  chicago: 'Garcia Soto, Miriam, Thomas A Henzinger, and Christian Schilling. “Synthesis
    of Hybrid Automata with Affine Dynamics from Time-Series Data.” In <i>HSCC ’21:
    Proceedings of the 24th International Conference on Hybrid Systems: Computation
    and Control</i>, 2102.12734. Association for Computing Machinery, 2021. <a href="https://doi.org/10.1145/3447928.3456704">https://doi.org/10.1145/3447928.3456704</a>.'
  ieee: 'M. Garcia Soto, T. A. Henzinger, and C. Schilling, “Synthesis of hybrid automata
    with affine dynamics from time-series data,” in <i>HSCC ’21: Proceedings of the
    24th International Conference on Hybrid Systems: Computation and Control</i>,
    Nashville, TN, United States, 2021, p. 2102.12734.'
  ista: 'Garcia Soto M, Henzinger TA, Schilling C. 2021. Synthesis of hybrid automata
    with affine dynamics from time-series data. HSCC ’21: Proceedings of the 24th
    International Conference on Hybrid Systems: Computation and Control. HSCC: Hybrid
    Systems - Computation and Control, 2102.12734.'
  mla: 'Garcia Soto, Miriam, et al. “Synthesis of Hybrid Automata with Affine Dynamics
    from Time-Series Data.” <i>HSCC ’21: Proceedings of the 24th International Conference
    on Hybrid Systems: Computation and Control</i>, Association for Computing Machinery,
    2021, p. 2102.12734, doi:<a href="https://doi.org/10.1145/3447928.3456704">10.1145/3447928.3456704</a>.'
  short: 'M. Garcia Soto, T.A. Henzinger, C. Schilling, in:, HSCC ’21: Proceedings
    of the 24th International Conference on Hybrid Systems: Computation and Control,
    Association for Computing Machinery, 2021, p. 2102.12734.'
conference:
  end_date: 2021-05-21
  location: Nashville, TN, United States
  name: 'HSCC: Hybrid Systems - Computation and Control'
  start_date: 2021-05-19
corr_author: '1'
date_created: 2021-02-26T16:30:39Z
date_published: 2021-05-01T00:00:00Z
date_updated: 2025-07-10T12:01:40Z
day: '01'
ddc:
- '000'
department:
- _id: ToHe
doi: 10.1145/3447928.3456704
ec_funded: 1
external_id:
  arxiv:
  - '2102.12734'
  isi:
  - '000932821700028'
file:
- access_level: open_access
  checksum: 4c1202c1abf71384c3ee6fea88c2f80e
  content_type: application/pdf
  creator: kschuh
  date_created: 2021-05-25T13:53:22Z
  date_updated: 2021-05-25T13:53:22Z
  file_id: '9424'
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  file_size: 1474786
  relation: main_file
  success: 1
file_date_updated: 2021-05-25T13:53:22Z
has_accepted_license: '1'
isi: 1
keyword:
- hybrid automaton
- membership
- system identification
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: '2102.12734'
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publication: 'HSCC ''21: Proceedings of the 24th International Conference on Hybrid
  Systems: Computation and Control'
publication_identifier:
  isbn:
  - '9781450383394'
publication_status: published
publisher: Association for Computing Machinery
quality_controlled: '1'
scopus_import: '1'
status: public
title: Synthesis of hybrid automata with affine dynamics from time-series data
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  short: CC BY (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '9239'
abstract:
- lang: eng
  text: 'A graph game proceeds as follows: two players move a token through a graph
    to produce a finite or infinite path, which determines the payoff of the game.
    We study bidding games in which in each turn, an auction determines which player
    moves the token. Bidding games were largely studied in combination with two variants
    of first-price auctions called “Richman” and “poorman” bidding. We study taxman
    bidding, which span the spectrum between the two. The game is parameterized by
    a constant : portion τ of the winning bid is paid to the other player, and portion  to
    the bank. While finite-duration (reachability) taxman games have been studied
    before, we present, for the first time, results on infinite-duration taxman games:
    we unify, generalize, and simplify previous equivalences between bidding games
    and a class of stochastic games called random-turn games.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Guy
  full_name: Avni, Guy
  id: 463C8BC2-F248-11E8-B48F-1D18A9856A87
  last_name: Avni
  orcid: 0000-0001-5588-8287
- first_name: Thomas A
  full_name: Henzinger, Thomas A
  id: 40876CD8-F248-11E8-B48F-1D18A9856A87
  last_name: Henzinger
  orcid: 0000-0002-2985-7724
- first_name: Đorđe
  full_name: Žikelić, Đorđe
  last_name: Žikelić
citation:
  ama: Avni G, Henzinger TA, Žikelić Đ. Bidding mechanisms in graph games. <i>Journal
    of Computer and System Sciences</i>. 2021;119(8):133-144. doi:<a href="https://doi.org/10.1016/j.jcss.2021.02.008">10.1016/j.jcss.2021.02.008</a>
  apa: Avni, G., Henzinger, T. A., &#38; Žikelić, Đ. (2021). Bidding mechanisms in
    graph games. <i>Journal of Computer and System Sciences</i>. Elsevier. <a href="https://doi.org/10.1016/j.jcss.2021.02.008">https://doi.org/10.1016/j.jcss.2021.02.008</a>
  chicago: Avni, Guy, Thomas A Henzinger, and Đorđe Žikelić. “Bidding Mechanisms in
    Graph Games.” <i>Journal of Computer and System Sciences</i>. Elsevier, 2021.
    <a href="https://doi.org/10.1016/j.jcss.2021.02.008">https://doi.org/10.1016/j.jcss.2021.02.008</a>.
  ieee: G. Avni, T. A. Henzinger, and Đ. Žikelić, “Bidding mechanisms in graph games,”
    <i>Journal of Computer and System Sciences</i>, vol. 119, no. 8. Elsevier, pp.
    133–144, 2021.
  ista: Avni G, Henzinger TA, Žikelić Đ. 2021. Bidding mechanisms in graph games.
    Journal of Computer and System Sciences. 119(8), 133–144.
  mla: Avni, Guy, et al. “Bidding Mechanisms in Graph Games.” <i>Journal of Computer
    and System Sciences</i>, vol. 119, no. 8, Elsevier, 2021, pp. 133–44, doi:<a href="https://doi.org/10.1016/j.jcss.2021.02.008">10.1016/j.jcss.2021.02.008</a>.
  short: G. Avni, T.A. Henzinger, Đ. Žikelić, Journal of Computer and System Sciences
    119 (2021) 133–144.
date_created: 2021-03-14T23:01:32Z
date_published: 2021-03-03T00:00:00Z
date_updated: 2025-07-10T11:53:57Z
day: '03'
department:
- _id: ToHe
doi: 10.1016/j.jcss.2021.02.008
external_id:
  arxiv:
  - '1905.03835'
  isi:
  - '000634149800009'
intvolume: '       119'
isi: 1
issue: '8'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.1905.03835
month: '03'
oa: 1
oa_version: Preprint
page: 133-144
publication: Journal of Computer and System Sciences
publication_identifier:
  eissn:
  - 1090-2724
  issn:
  - 0022-0000
publication_status: published
publisher: Elsevier
quality_controlled: '1'
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    relation: earlier_version
    status: public
scopus_import: '1'
status: public
title: Bidding mechanisms in graph games
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 119
year: '2021'
...
---
_id: '9281'
abstract:
- lang: eng
  text: We comment on two formal proofs of Fermat's sum of two squares theorem, written
    using the Mathematical Components libraries of the Coq proof assistant. The first
    one follows Zagier's celebrated one-sentence proof; the second follows David Christopher's
    recent new proof relying on partition-theoretic arguments. Both formal proofs
    rely on a general property of involutions of finite sets, of independent interest.
    The proof technique consists for the most part of automating recurrent tasks (such
    as case distinctions and computations on natural numbers) via ad hoc tactics.
article_number: '2103.11389'
article_processing_charge: No
arxiv: 1
author:
- first_name: Guillaume
  full_name: Dubach, Guillaume
  id: D5C6A458-10C4-11EA-ABF4-A4B43DDC885E
  last_name: Dubach
  orcid: 0000-0001-6892-8137
- first_name: Fabian
  full_name: Mühlböck, Fabian
  id: 6395C5F6-89DF-11E9-9C97-6BDFE5697425
  last_name: Mühlböck
  orcid: 0000-0003-1548-0177
citation:
  ama: Dubach G, Mühlböck F. Formal verification of Zagier’s one-sentence proof. <i>arXiv</i>.
    doi:<a href="https://doi.org/10.48550/arXiv.2103.11389">10.48550/arXiv.2103.11389</a>
  apa: Dubach, G., &#38; Mühlböck, F. (n.d.). Formal verification of Zagier’s one-sentence
    proof. <i>arXiv</i>. <a href="https://doi.org/10.48550/arXiv.2103.11389">https://doi.org/10.48550/arXiv.2103.11389</a>
  chicago: Dubach, Guillaume, and Fabian Mühlböck. “Formal Verification of Zagier’s
    One-Sentence Proof.” <i>ArXiv</i>, n.d. <a href="https://doi.org/10.48550/arXiv.2103.11389">https://doi.org/10.48550/arXiv.2103.11389</a>.
  ieee: G. Dubach and F. Mühlböck, “Formal verification of Zagier’s one-sentence proof,”
    <i>arXiv</i>. .
  ista: Dubach G, Mühlböck F. Formal verification of Zagier’s one-sentence proof.
    arXiv, 2103.11389.
  mla: Dubach, Guillaume, and Fabian Mühlböck. “Formal Verification of Zagier’s One-Sentence
    Proof.” <i>ArXiv</i>, 2103.11389, doi:<a href="https://doi.org/10.48550/arXiv.2103.11389">10.48550/arXiv.2103.11389</a>.
  short: G. Dubach, F. Mühlböck, ArXiv (n.d.).
corr_author: '1'
date_created: 2021-03-23T05:38:48Z
date_published: 2021-03-21T00:00:00Z
date_updated: 2025-04-15T06:26:12Z
day: '21'
department:
- _id: LaEr
- _id: ToHe
doi: 10.48550/arXiv.2103.11389
ec_funded: 1
external_id:
  arxiv:
  - '2103.11389'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2103.11389
month: '03'
oa: 1
oa_version: Preprint
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publication: arXiv
publication_status: submitted
related_material:
  record:
  - id: '9946'
    relation: other
    status: public
status: public
title: Formal verification of Zagier's one-sentence proof
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2021'
...
---
_id: '9647'
abstract:
- lang: eng
  text: 'Gene expression is regulated by the set of transcription factors (TFs) that
    bind to the promoter. The ensuing regulating function is often represented as
    a combinational logic circuit, where output (gene expression) is determined by
    current input values (promoter bound TFs) only. However, the simultaneous arrival
    of TFs is a strong assumption, since transcription and translation of genes introduce
    intrinsic time delays and there is no global synchronisation among the arrival
    times of different molecular species at their targets. We present an experimentally
    implementable genetic circuit with two inputs and one output, which in the presence
    of small delays in input arrival, exhibits qualitatively distinct population-level
    phenotypes, over timescales that are longer than typical cell doubling times.
    From a dynamical systems point of view, these phenotypes represent long-lived
    transients: although they converge to the same value eventually, they do so after
    a very long time span. The key feature of this toy model genetic circuit is that,
    despite having only two inputs and one output, it is regulated by twenty-three
    distinct DNA-TF configurations, two of which are more stable than others (DNA
    looped states), one promoting and another blocking the expression of the output
    gene. Small delays in input arrival time result in a majority of cells in the
    population quickly reaching the stable state associated with the first input,
    while exiting of this stable state occurs at a slow timescale. In order to mechanistically
    model the behaviour of this genetic circuit, we used a rule-based modelling language,
    and implemented a grid-search to find parameter combinations giving rise to long-lived
    transients. Our analysis shows that in the absence of feedback, there exist path-dependent
    gene regulatory mechanisms based on the long timescale of transients. The behaviour
    of this toy model circuit suggests that gene regulatory networks can exploit event
    timing to create phenotypes, and it opens the possibility that they could use
    event timing to memorise events, without regulatory feedback. The model reveals
    the importance of (i) mechanistically modelling the transitions between the different
    DNA-TF states, and (ii) employing transient analysis thereof.'
acknowledgement: 'Tatjana Petrov’s research was supported in part by SNSF Advanced
  Postdoctoral Mobility Fellowship grant number P300P2 161067, the Ministry of Science,
  Research and the Arts of the state of Baden-Wurttemberg, and the DFG Centre of Excellence
  2117 ‘Centre for the Advanced Study of Collective Behaviour’ (ID: 422037984). Claudia
  Igler is the recipient of a DOC Fellowship of the Austrian Academy of Sciences.
  Thomas A. Henzinger’s research was supported in part by the Austrian Science Fund
  (FWF) under grant Z211-N23 (Wittgenstein Award).'
article_processing_charge: No
article_type: original
author:
- first_name: Tatjana
  full_name: Petrov, Tatjana
  last_name: Petrov
- first_name: Claudia
  full_name: Igler, Claudia
  id: 46613666-F248-11E8-B48F-1D18A9856A87
  last_name: Igler
- first_name: Ali
  full_name: Sezgin, Ali
  id: 4C7638DA-F248-11E8-B48F-1D18A9856A87
  last_name: Sezgin
- 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: Calin C
  full_name: Guet, Calin C
  id: 47F8433E-F248-11E8-B48F-1D18A9856A87
  last_name: Guet
  orcid: 0000-0001-6220-2052
citation:
  ama: Petrov T, Igler C, Sezgin A, Henzinger TA, Guet CC. Long lived transients in
    gene regulation. <i>Theoretical Computer Science</i>. 2021;893:1-16. doi:<a href="https://doi.org/10.1016/j.tcs.2021.05.023">10.1016/j.tcs.2021.05.023</a>
  apa: Petrov, T., Igler, C., Sezgin, A., Henzinger, T. A., &#38; Guet, C. C. (2021).
    Long lived transients in gene regulation. <i>Theoretical Computer Science</i>.
    Elsevier. <a href="https://doi.org/10.1016/j.tcs.2021.05.023">https://doi.org/10.1016/j.tcs.2021.05.023</a>
  chicago: Petrov, Tatjana, Claudia Igler, Ali Sezgin, Thomas A Henzinger, and Calin
    C Guet. “Long Lived Transients in Gene Regulation.” <i>Theoretical Computer Science</i>.
    Elsevier, 2021. <a href="https://doi.org/10.1016/j.tcs.2021.05.023">https://doi.org/10.1016/j.tcs.2021.05.023</a>.
  ieee: T. Petrov, C. Igler, A. Sezgin, T. A. Henzinger, and C. C. Guet, “Long lived
    transients in gene regulation,” <i>Theoretical Computer Science</i>, vol. 893.
    Elsevier, pp. 1–16, 2021.
  ista: Petrov T, Igler C, Sezgin A, Henzinger TA, Guet CC. 2021. Long lived transients
    in gene regulation. Theoretical Computer Science. 893, 1–16.
  mla: Petrov, Tatjana, et al. “Long Lived Transients in Gene Regulation.” <i>Theoretical
    Computer Science</i>, vol. 893, Elsevier, 2021, pp. 1–16, doi:<a href="https://doi.org/10.1016/j.tcs.2021.05.023">10.1016/j.tcs.2021.05.023</a>.
  short: T. Petrov, C. Igler, A. Sezgin, T.A. Henzinger, C.C. Guet, Theoretical Computer
    Science 893 (2021) 1–16.
corr_author: '1'
date_created: 2021-07-11T22:01:18Z
date_published: 2021-06-04T00:00:00Z
date_updated: 2025-04-15T06:25:56Z
day: '04'
ddc:
- '004'
department:
- _id: ToHe
- _id: CaGu
doi: 10.1016/j.tcs.2021.05.023
external_id:
  isi:
  - '000710180500002'
file:
- access_level: open_access
  checksum: d3aef34cfb13e53bba4cf44d01680793
  content_type: application/pdf
  creator: dernst
  date_created: 2022-05-12T12:13:27Z
  date_updated: 2022-05-12T12:13:27Z
  file_id: '11364'
  file_name: 2021_TheoreticalComputerScience_Petrov.pdf
  file_size: 2566504
  relation: main_file
  success: 1
file_date_updated: 2022-05-12T12:13:27Z
has_accepted_license: '1'
intvolume: '       893'
isi: 1
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 1-16
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication: Theoretical Computer Science
publication_identifier:
  issn:
  - 0304-3975
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: Long lived transients in gene regulation
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
    (CC BY-NC-ND 4.0)
  short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 893
year: '2021'
...
---
_id: '9946'
abstract:
- lang: eng
  text: We argue that the time is ripe to investigate differential monitoring, in
    which the specification of a program's behavior is implicitly given by a second
    program implementing the same informal specification. Similar ideas have been
    proposed before, and are currently implemented in restricted form for testing
    and specialized run-time analyses, aspects of which we combine. We discuss the
    challenges of implementing differential monitoring as a general-purpose, black-box
    run-time monitoring framework, and present promising results of a preliminary
    implementation, showing low monitoring overheads for diverse programs.
acknowledgement: The authors would like to thank Borzoo Bonakdarpour, Derek Dreyer,
  Adrian Francalanza, Owolabi Legunsen, Matthew Milano, Manuel Rigger, Cesar Sanchez,
  and the members of the IST Verification Seminar for their helpful comments and insights
  on various stages of this work, as well as the reviewers of RV’21 for their helpful
  suggestions on the actual paper.
alternative_title:
- IST Austria Technical Report
article_processing_charge: No
author:
- first_name: Fabian
  full_name: Mühlböck, Fabian
  id: 6395C5F6-89DF-11E9-9C97-6BDFE5697425
  last_name: Mühlböck
  orcid: 0000-0003-1548-0177
- 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: Mühlböck F, Henzinger TA. <i>Differential Monitoring</i>. IST Austria; 2021.
    doi:<a href="https://doi.org/10.15479/AT:ISTA:9946">10.15479/AT:ISTA:9946</a>
  apa: Mühlböck, F., &#38; Henzinger, T. A. (2021). <i>Differential monitoring</i>.
    IST Austria. <a href="https://doi.org/10.15479/AT:ISTA:9946">https://doi.org/10.15479/AT:ISTA:9946</a>
  chicago: Mühlböck, Fabian, and Thomas A Henzinger. <i>Differential Monitoring</i>.
    IST Austria, 2021. <a href="https://doi.org/10.15479/AT:ISTA:9946">https://doi.org/10.15479/AT:ISTA:9946</a>.
  ieee: F. Mühlböck and T. A. Henzinger, <i>Differential monitoring</i>. IST Austria,
    2021.
  ista: Mühlböck F, Henzinger TA. 2021. Differential monitoring, IST Austria, 17p.
  mla: Mühlböck, Fabian, and Thomas A. Henzinger. <i>Differential Monitoring</i>.
    IST Austria, 2021, doi:<a href="https://doi.org/10.15479/AT:ISTA:9946">10.15479/AT:ISTA:9946</a>.
  short: F. Mühlböck, T.A. Henzinger, Differential Monitoring, IST Austria, 2021.
date_created: 2021-08-20T20:00:37Z
date_published: 2021-09-01T00:00:00Z
date_updated: 2025-04-15T06:55:00Z
day: '01'
ddc:
- '005'
department:
- _id: ToHe
doi: 10.15479/AT:ISTA:9946
file:
- access_level: open_access
  checksum: 0f9aafd59444cb6bdca6925d163ab946
  content_type: application/pdf
  creator: fmuehlbo
  date_created: 2021-08-20T19:59:44Z
  date_updated: 2021-09-03T12:34:28Z
  file_id: '9948'
  file_name: differentialmonitoring-techreport.pdf
  file_size: '320453'
  relation: main_file
file_date_updated: 2021-09-03T12:34:28Z
has_accepted_license: '1'
keyword:
- run-time verification
- software engineering
- implicit specification
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '17'
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
  call_identifier: FWF
  grant_number: Z211
  name: Formal methods for the design and analysis of complex systems
publication_identifier:
  issn:
  - 2664-1690
publication_status: published
publisher: IST Austria
related_material:
  record:
  - id: '10108'
    relation: shorter_version
    status: public
  - id: '9281'
    relation: other
    status: public
status: public
title: Differential monitoring
type: technical_report
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2021'
...
