---
_id: '32811'
abstract:
- lang: eng
  text: 'The decentralized nature of multi-agent systems requires continuous data
    exchange to achieve global objectives. In such scenarios, Age of Information (AoI)
    has become an important metric of the freshness of exchanged data due to the error-proneness
    and delays of communication systems. Communication systems usually possess dependencies:
    the process describing the success or failure of communication is highly correlated
    when these attempts are ``close'''' in some domain (e.g. in time, frequency, space
    or code as in wireless communication) and is, in general, non-stationary. To study
    AoI in such scenarios, we consider an abstract event-based AoI process $\Delta(n)$,
    expressing time since the last update: If, at time $n$, a monitoring node receives
    a status update from a source node (event $A(n-1)$ occurs), then $\Delta(n)$ is
    reset to one; otherwise, $\Delta(n)$ grows linearly in time. This AoI process
    can thus be viewed as a special random walk with resets. The event process $A(n)$
    may be nonstationary and we merely assume that its temporal dependencies decay
    sufficiently, described by $\alpha$-mixing. We calculate moment bounds for the
    resulting AoI process as a function of the mixing rate of $A(n)$. Furthermore,
    we prove that the AoI process $\Delta(n)$ is itself $\alpha$-mixing from which
    we conclude a strong law of large numbers for $\Delta(n)$. These results are new,
    since AoI processes have not been studied so far in this general strongly mixing
    setting. This opens up future work on renewal processes with non-independent interarrival
    times.'
author:
- first_name: Adrian
  full_name: Redder, Adrian
  id: '52265'
  last_name: Redder
  orcid: https://orcid.org/0000-0001-7391-4688
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: 'Redder A, Ramaswamy A, Karl H. Age of Information Process under Strongly Mixing
    Communication -- Moment Bound, Mixing Rate and Strong Law. In: <i>Proceedings
    of the 58th Allerton Conference on Communication, Control, and Computing</i>.
    ; 2022.'
  apa: Redder, A., Ramaswamy, A., &#38; Karl, H. (2022). Age of Information Process
    under Strongly Mixing Communication -- Moment Bound, Mixing Rate and Strong Law.
    <i>Proceedings of the 58th Allerton Conference on Communication, Control, and
    Computing</i>. 58th Allerton Conference on Communication, Control, and Computing.
  bibtex: '@inproceedings{Redder_Ramaswamy_Karl_2022, title={Age of Information Process
    under Strongly Mixing Communication -- Moment Bound, Mixing Rate and Strong Law},
    booktitle={Proceedings of the 58th Allerton Conference on Communication, Control,
    and Computing}, author={Redder, Adrian and Ramaswamy, Arunselvan and Karl, Holger},
    year={2022} }'
  chicago: Redder, Adrian, Arunselvan Ramaswamy, and Holger Karl. “Age of Information
    Process under Strongly Mixing Communication -- Moment Bound, Mixing Rate and Strong
    Law.” In <i>Proceedings of the 58th Allerton Conference on Communication, Control,
    and Computing</i>, 2022.
  ieee: A. Redder, A. Ramaswamy, and H. Karl, “Age of Information Process under Strongly
    Mixing Communication -- Moment Bound, Mixing Rate and Strong Law,” presented at
    the 58th Allerton Conference on Communication, Control, and Computing, 2022.
  mla: Redder, Adrian, et al. “Age of Information Process under Strongly Mixing Communication
    -- Moment Bound, Mixing Rate and Strong Law.” <i>Proceedings of the 58th Allerton
    Conference on Communication, Control, and Computing</i>, 2022.
  short: 'A. Redder, A. Ramaswamy, H. Karl, in: Proceedings of the 58th Allerton Conference
    on Communication, Control, and Computing, 2022.'
conference:
  name: 58th Allerton Conference on Communication, Control, and Computing
date_created: 2022-08-15T09:59:17Z
date_updated: 2022-11-18T09:31:19Z
ddc:
- '000'
department:
- _id: '75'
has_accepted_license: '1'
language:
- iso: eng
project:
- _id: '16'
  name: 'SFB 901 - C4: SFB 901 - Subproject C4'
- _id: '1'
  name: 'SFB 901: SFB 901'
- _id: '4'
  name: 'SFB 901 - C: SFB 901 - Project Area C'
publication: Proceedings of the 58th Allerton Conference on Communication, Control,
  and Computing
status: public
title: Age of Information Process under Strongly Mixing Communication -- Moment Bound,
  Mixing Rate and Strong Law
type: conference
user_id: '477'
year: '2022'
...
---
_id: '30793'
author:
- first_name: Adrian
  full_name: Redder, Adrian
  id: '52265'
  last_name: Redder
  orcid: https://orcid.org/0000-0001-7391-4688
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: 'Redder A, Ramaswamy A, Karl H. Multi-agent Policy Gradient Algorithms for
    Cyber-physical Systems with Lossy Communication. In: <i>Proceedings of the 14th
    International Conference on Agents and Artificial Intelligence</i>. SCITEPRESS
    - Science and Technology Publications; 2022. doi:<a href="https://doi.org/10.5220/0010845400003116">10.5220/0010845400003116</a>'
  apa: Redder, A., Ramaswamy, A., &#38; Karl, H. (2022). Multi-agent Policy Gradient
    Algorithms for Cyber-physical Systems with Lossy Communication. <i>Proceedings
    of the 14th International Conference on Agents and Artificial Intelligence</i>.
    <a href="https://doi.org/10.5220/0010845400003116">https://doi.org/10.5220/0010845400003116</a>
  bibtex: '@inproceedings{Redder_Ramaswamy_Karl_2022, title={Multi-agent Policy Gradient
    Algorithms for Cyber-physical Systems with Lossy Communication}, DOI={<a href="https://doi.org/10.5220/0010845400003116">10.5220/0010845400003116</a>},
    booktitle={Proceedings of the 14th International Conference on Agents and Artificial
    Intelligence}, publisher={SCITEPRESS - Science and Technology Publications}, author={Redder,
    Adrian and Ramaswamy, Arunselvan and Karl, Holger}, year={2022} }'
  chicago: Redder, Adrian, Arunselvan Ramaswamy, and Holger Karl. “Multi-Agent Policy
    Gradient Algorithms for Cyber-Physical Systems with Lossy Communication.” In <i>Proceedings
    of the 14th International Conference on Agents and Artificial Intelligence</i>.
    SCITEPRESS - Science and Technology Publications, 2022. <a href="https://doi.org/10.5220/0010845400003116">https://doi.org/10.5220/0010845400003116</a>.
  ieee: 'A. Redder, A. Ramaswamy, and H. Karl, “Multi-agent Policy Gradient Algorithms
    for Cyber-physical Systems with Lossy Communication,” 2022, doi: <a href="https://doi.org/10.5220/0010845400003116">10.5220/0010845400003116</a>.'
  mla: Redder, Adrian, et al. “Multi-Agent Policy Gradient Algorithms for Cyber-Physical
    Systems with Lossy Communication.” <i>Proceedings of the 14th International Conference
    on Agents and Artificial Intelligence</i>, SCITEPRESS - Science and Technology
    Publications, 2022, doi:<a href="https://doi.org/10.5220/0010845400003116">10.5220/0010845400003116</a>.
  short: 'A. Redder, A. Ramaswamy, H. Karl, in: Proceedings of the 14th International
    Conference on Agents and Artificial Intelligence, SCITEPRESS - Science and Technology
    Publications, 2022.'
date_created: 2022-04-06T07:18:36Z
date_updated: 2022-11-18T09:32:14Z
ddc:
- '006'
department:
- _id: '75'
doi: 10.5220/0010845400003116
file:
- access_level: closed
  content_type: application/pdf
  creator: aredder
  date_created: 2022-08-31T07:10:13Z
  date_updated: 2022-08-31T07:10:13Z
  file_id: '33237'
  file_name: ICCART2022.pdf
  file_size: 298926
  relation: main_file
  success: 1
file_date_updated: 2022-08-31T07:10:13Z
has_accepted_license: '1'
language:
- iso: eng
project:
- _id: '16'
  name: 'SFB 901 - C4: SFB 901 - Subproject C4'
- _id: '24'
  name: 'NICCI-CN: Netzgewahre Regelung & regelungsgewahre Netze'
- _id: '1'
  name: 'SFB 901: SFB 901'
- _id: '4'
  name: 'SFB 901 - C: SFB 901 - Project Area C'
publication: Proceedings of the 14th International Conference on Agents and Artificial
  Intelligence
publication_status: published
publisher: SCITEPRESS - Science and Technology Publications
status: public
title: Multi-agent Policy Gradient Algorithms for Cyber-physical Systems with Lossy
  Communication
type: conference
user_id: '477'
year: '2022'
...
---
_id: '30790'
abstract:
- lang: eng
  text: "Iterative distributed optimization algorithms involve multiple agents that\r\ncommunicate
    with each other, over time, in order to minimize/maximize a global\r\nobjective.
    In the presence of unreliable communication networks, the\r\nAge-of-Information
    (AoI), which measures the freshness of data received, may be\r\nlarge and hence
    hinder algorithmic convergence. In this paper, we study the\r\nconvergence of
    general distributed gradient-based optimization algorithms in\r\nthe presence
    of communication that neither happens periodically nor at\r\nstochastically independent
    points in time. We show that convergence is\r\nguaranteed provided the random
    variables associated with the AoI processes are\r\nstochastically dominated by
    a random variable with finite first moment. This\r\nimproves on previous requirements
    of boundedness of more than the first moment.\r\nWe then introduce stochastically
    strongly connected (SSC) networks, a new\r\nstochastic form of strong connectedness
    for time-varying networks. We show: If\r\nfor any $p \\ge0$ the processes that
    describe the success of communication\r\nbetween agents in a SSC network are $\\alpha$-mixing
    with $n^{p-1}\\alpha(n)$\r\nsummable, then the associated AoI processes are stochastically
    dominated by a\r\nrandom variable with finite $p$-th moment. In combination with
    our first\r\ncontribution, this implies that distributed stochastic gradient descend\r\nconverges
    in the presence of AoI, if $\\alpha(n)$ is summable."
author:
- first_name: Adrian
  full_name: Redder, Adrian
  id: '52265'
  last_name: Redder
  orcid: https://orcid.org/0000-0001-7391-4688
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: Redder A, Ramaswamy A, Karl H. Distributed gradient-based optimization in the
    presence of dependent  aperiodic communication. <i>arXiv:220111343</i>. Published
    online 2022.
  apa: Redder, A., Ramaswamy, A., &#38; Karl, H. (2022). Distributed gradient-based
    optimization in the presence of dependent  aperiodic communication. In <i>arXiv:2201.11343</i>.
  bibtex: '@article{Redder_Ramaswamy_Karl_2022, title={Distributed gradient-based
    optimization in the presence of dependent  aperiodic communication}, journal={arXiv:2201.11343},
    author={Redder, Adrian and Ramaswamy, Arunselvan and Karl, Holger}, year={2022}
    }'
  chicago: Redder, Adrian, Arunselvan Ramaswamy, and Holger Karl. “Distributed Gradient-Based
    Optimization in the Presence of Dependent  Aperiodic Communication.” <i>ArXiv:2201.11343</i>,
    2022.
  ieee: A. Redder, A. Ramaswamy, and H. Karl, “Distributed gradient-based optimization
    in the presence of dependent  aperiodic communication,” <i>arXiv:2201.11343</i>.
    2022.
  mla: Redder, Adrian, et al. “Distributed Gradient-Based Optimization in the Presence
    of Dependent  Aperiodic Communication.” <i>ArXiv:2201.11343</i>, 2022.
  short: A. Redder, A. Ramaswamy, H. Karl, ArXiv:2201.11343 (2022).
date_created: 2022-04-06T06:53:38Z
date_updated: 2022-11-18T09:33:01Z
department:
- _id: '75'
external_id:
  arxiv:
  - '2201.11343'
language:
- iso: eng
project:
- _id: '16'
  name: 'SFB 901 - C4: SFB 901 - Subproject C4'
- _id: '1'
  name: 'SFB 901: SFB 901'
- _id: '4'
  name: 'SFB 901 - C: SFB 901 - Project Area C'
publication: arXiv:2201.11343
status: public
title: Distributed gradient-based optimization in the presence of dependent  aperiodic
  communication
type: preprint
user_id: '477'
year: '2022'
...
---
_id: '30791'
abstract:
- lang: eng
  text: "We present sufficient conditions that ensure convergence of the multi-agent\r\nDeep
    Deterministic Policy Gradient (DDPG) algorithm. It is an example of one of\r\nthe
    most popular paradigms of Deep Reinforcement Learning (DeepRL) for tackling\r\ncontinuous
    action spaces: the actor-critic paradigm. In the setting considered\r\nherein,
    each agent observes a part of the global state space in order to take\r\nlocal
    actions, for which it receives local rewards. For every agent, DDPG\r\ntrains
    a local actor (policy) and a local critic (Q-function). The analysis\r\nshows
    that multi-agent DDPG using neural networks to approximate the local\r\npolicies
    and critics converge to limits with the following properties: The\r\ncritic limits
    minimize the average squared Bellman loss; the actor limits\r\nparameterize a
    policy that maximizes the local critic's approximation of\r\n$Q_i^*$, where $i$
    is the agent index. The averaging is with respect to a\r\nprobability distribution
    over the global state-action space. It captures the\r\nasymptotics of all local
    training processes. Finally, we extend the analysis to\r\na fully decentralized
    setting where agents communicate over a wireless network\r\nprone to delays and
    losses; a typical scenario in, e.g., robotic applications."
author:
- first_name: Adrian
  full_name: Redder, Adrian
  id: '52265'
  last_name: Redder
  orcid: https://orcid.org/0000-0001-7391-4688
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: Redder A, Ramaswamy A, Karl H. Asymptotic Convergence of Deep Multi-Agent Actor-Critic
    Algorithms. <i>arXiv:220100570</i>. Published online 2022.
  apa: Redder, A., Ramaswamy, A., &#38; Karl, H. (2022). Asymptotic Convergence of
    Deep Multi-Agent Actor-Critic Algorithms. In <i>arXiv:2201.00570</i>.
  bibtex: '@article{Redder_Ramaswamy_Karl_2022, title={Asymptotic Convergence of Deep
    Multi-Agent Actor-Critic Algorithms}, journal={arXiv:2201.00570}, author={Redder,
    Adrian and Ramaswamy, Arunselvan and Karl, Holger}, year={2022} }'
  chicago: Redder, Adrian, Arunselvan Ramaswamy, and Holger Karl. “Asymptotic Convergence
    of Deep Multi-Agent Actor-Critic Algorithms.” <i>ArXiv:2201.00570</i>, 2022.
  ieee: A. Redder, A. Ramaswamy, and H. Karl, “Asymptotic Convergence of Deep Multi-Agent
    Actor-Critic Algorithms,” <i>arXiv:2201.00570</i>. 2022.
  mla: Redder, Adrian, et al. “Asymptotic Convergence of Deep Multi-Agent Actor-Critic
    Algorithms.” <i>ArXiv:2201.00570</i>, 2022.
  short: A. Redder, A. Ramaswamy, H. Karl, ArXiv:2201.00570 (2022).
date_created: 2022-04-06T06:53:52Z
date_updated: 2022-11-18T09:33:42Z
department:
- _id: '75'
external_id:
  arxiv:
  - '2201.00570'
language:
- iso: eng
project:
- _id: '16'
  name: 'SFB 901 - C4: SFB 901 - Subproject C4'
- _id: '1'
  name: 'SFB 901: SFB 901'
- _id: '4'
  name: 'SFB 901 - C: SFB 901 - Project Area C'
publication: arXiv:2201.00570
status: public
title: Asymptotic Convergence of Deep Multi-Agent Actor-Critic Algorithms
type: preprint
user_id: '477'
year: '2022'
...
---
_id: '32854'
author:
- first_name: Adrian
  full_name: Redder, Adrian
  id: '52265'
  last_name: Redder
  orcid: https://orcid.org/0000-0001-7391-4688
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: Redder A, Ramaswamy A, Karl H. Practical Network Conditions for the Convergence
    of Distributed Optimization. <i>IFAC-PapersOnLine</i>. 2022;55(13):133–138.
  apa: Redder, A., Ramaswamy, A., &#38; Karl, H. (2022). Practical Network Conditions
    for the Convergence of Distributed Optimization. <i>IFAC-PapersOnLine</i>, <i>55</i>(13),
    133–138.
  bibtex: '@article{Redder_Ramaswamy_Karl_2022, title={Practical Network Conditions
    for the Convergence of Distributed Optimization}, volume={55}, number={13}, journal={IFAC-PapersOnLine},
    publisher={Elsevier}, author={Redder, Adrian and Ramaswamy, Arunselvan and Karl,
    Holger}, year={2022}, pages={133–138} }'
  chicago: 'Redder, Adrian, Arunselvan Ramaswamy, and Holger Karl. “Practical Network
    Conditions for the Convergence of Distributed Optimization.” <i>IFAC-PapersOnLine</i>
    55, no. 13 (2022): 133–138.'
  ieee: A. Redder, A. Ramaswamy, and H. Karl, “Practical Network Conditions for the
    Convergence of Distributed Optimization,” <i>IFAC-PapersOnLine</i>, vol. 55, no.
    13, pp. 133–138, 2022.
  mla: Redder, Adrian, et al. “Practical Network Conditions for the Convergence of
    Distributed Optimization.” <i>IFAC-PapersOnLine</i>, vol. 55, no. 13, Elsevier,
    2022, pp. 133–138.
  short: A. Redder, A. Ramaswamy, H. Karl, IFAC-PapersOnLine 55 (2022) 133–138.
conference:
  name: IFAC Conference on Networked Systems
date_created: 2022-08-16T09:12:55Z
date_updated: 2022-11-18T10:05:14Z
ddc:
- '006'
department:
- _id: '75'
file:
- access_level: closed
  content_type: application/pdf
  creator: aredder
  date_created: 2022-08-31T07:06:30Z
  date_updated: 2022-08-31T07:06:30Z
  file_id: '33236'
  file_name: NecSys2022____Practical_Conditions_for_Conv.pdf
  file_size: 298395
  relation: main_file
  success: 1
file_date_updated: 2022-08-31T07:06:30Z
has_accepted_license: '1'
intvolume: '        55'
issue: '13'
language:
- iso: eng
page: 133–138
project:
- _id: '16'
  name: 'SFB 901 - C4: SFB 901 - Subproject C4'
- _id: '1'
  name: 'SFB 901: SFB 901'
- _id: '4'
  name: 'SFB 901 - C: SFB 901 - Project Area C'
publication: IFAC-PapersOnLine
publisher: Elsevier
status: public
title: Practical Network Conditions for the Convergence of Distributed Optimization
type: journal_article
user_id: '477'
volume: 55
year: '2022'
...
---
_id: '24142'
author:
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Shalabh
  full_name: Bhatnagar, Shalabh
  last_name: Bhatnagar
citation:
  ama: Ramaswamy A, Bhatnagar S. Analyzing Approximate Value Iteration Algorithms.
    <i>Mathematics of Operations Research (to appear)</i>. Published online 2021.
  apa: Ramaswamy, A., &#38; Bhatnagar, S. (2021). Analyzing Approximate Value Iteration
    Algorithms. <i>Mathematics of Operations Research (to Appear)</i>.
  bibtex: '@article{Ramaswamy_Bhatnagar_2021, title={Analyzing Approximate Value Iteration
    Algorithms}, journal={Mathematics of Operations Research (to appear)}, author={Ramaswamy,
    Arunselvan and Bhatnagar, Shalabh}, year={2021} }'
  chicago: Ramaswamy, Arunselvan, and Shalabh Bhatnagar. “Analyzing Approximate Value
    Iteration Algorithms.” <i>Mathematics of Operations Research (to Appear)</i>,
    2021.
  ieee: A. Ramaswamy and S. Bhatnagar, “Analyzing Approximate Value Iteration Algorithms,”
    <i>Mathematics of Operations Research (to appear)</i>, 2021.
  mla: Ramaswamy, Arunselvan, and Shalabh Bhatnagar. “Analyzing Approximate Value
    Iteration Algorithms.” <i>Mathematics of Operations Research (to Appear)</i>,
    2021.
  short: A. Ramaswamy, S. Bhatnagar, Mathematics of Operations Research (to Appear)
    (2021).
date_created: 2021-09-10T09:52:53Z
date_updated: 2022-01-06T06:56:08Z
language:
- iso: eng
publication: Mathematics of Operations Research (to appear)
status: public
title: Analyzing Approximate Value Iteration Algorithms
type: journal_article
user_id: '66937'
year: '2021'
...
---
_id: '24143'
author:
- first_name: Jan Peter
  full_name: Drees, Jan Peter
  last_name: Drees
- first_name: Pritha
  full_name: Gupta, Pritha
  id: '54803'
  last_name: Gupta
- first_name: Eyke
  full_name: Hüllermeier, Eyke
  id: '48129'
  last_name: Hüllermeier
- first_name: Tibor
  full_name: Jager, Tibor
  last_name: Jager
- first_name: Alexander
  full_name: Konze, Alexander
  last_name: Konze
- first_name: Claudia
  full_name: Priesterjahn, Claudia
  last_name: Priesterjahn
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Juraj
  full_name: Somorovsky, Juraj
  id: '83504'
  last_name: Somorovsky
  orcid: 0000-0002-3593-7720
citation:
  ama: 'Drees JP, Gupta P, Hüllermeier E, et al. Automated Detection of Side Channels
    in Cryptographic Protocols: DROWN the ROBOTs! <i>14th ACM Workshop on Artificial
    Intelligence and Security</i>. Published online 2021.'
  apa: 'Drees, J. P., Gupta, P., Hüllermeier, E., Jager, T., Konze, A., Priesterjahn,
    C., Ramaswamy, A., &#38; Somorovsky, J. (2021). Automated Detection of Side Channels
    in Cryptographic Protocols: DROWN the ROBOTs! <i>14th ACM Workshop on Artificial
    Intelligence and Security</i>.'
  bibtex: '@article{Drees_Gupta_Hüllermeier_Jager_Konze_Priesterjahn_Ramaswamy_Somorovsky_2021,
    title={Automated Detection of Side Channels in Cryptographic Protocols: DROWN
    the ROBOTs!}, journal={14th ACM Workshop on Artificial Intelligence and Security},
    author={Drees, Jan Peter and Gupta, Pritha and Hüllermeier, Eyke and Jager, Tibor
    and Konze, Alexander and Priesterjahn, Claudia and Ramaswamy, Arunselvan and Somorovsky,
    Juraj}, year={2021} }'
  chicago: 'Drees, Jan Peter, Pritha Gupta, Eyke Hüllermeier, Tibor Jager, Alexander
    Konze, Claudia Priesterjahn, Arunselvan Ramaswamy, and Juraj Somorovsky. “Automated
    Detection of Side Channels in Cryptographic Protocols: DROWN the ROBOTs!” <i>14th
    ACM Workshop on Artificial Intelligence and Security</i>, 2021.'
  ieee: 'J. P. Drees <i>et al.</i>, “Automated Detection of Side Channels in Cryptographic
    Protocols: DROWN the ROBOTs!,” <i>14th ACM Workshop on Artificial Intelligence
    and Security</i>, 2021.'
  mla: 'Drees, Jan Peter, et al. “Automated Detection of Side Channels in Cryptographic
    Protocols: DROWN the ROBOTs!” <i>14th ACM Workshop on Artificial Intelligence
    and Security</i>, 2021.'
  short: J.P. Drees, P. Gupta, E. Hüllermeier, T. Jager, A. Konze, C. Priesterjahn,
    A. Ramaswamy, J. Somorovsky, 14th ACM Workshop on Artificial Intelligence and
    Security (2021).
date_created: 2021-09-10T09:56:27Z
date_updated: 2022-01-06T06:56:08Z
department:
- _id: '632'
language:
- iso: eng
publication: 14th ACM Workshop on Artificial Intelligence and Security
status: public
title: 'Automated Detection of Side Channels in Cryptographic Protocols: DROWN the
  ROBOTs!'
type: journal_article
user_id: '83504'
year: '2021'
...
---
_id: '24148'
author:
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Eyke
  full_name: Hüllermeier, Eyke
  id: '48129'
  last_name: Hüllermeier
citation:
  ama: 'Ramaswamy A, Hüllermeier E. Deep Q-Learning: Theoretical Insights from an
    Asymptotic Analysis. <i>IEEE Transactions on Artificial Intelligence (to appear)</i>.
    Published online 2021.'
  apa: 'Ramaswamy, A., &#38; Hüllermeier, E. (2021). Deep Q-Learning: Theoretical
    Insights from an Asymptotic Analysis. <i>IEEE Transactions on Artificial Intelligence
    (to Appear)</i>.'
  bibtex: '@article{Ramaswamy_Hüllermeier_2021, title={Deep Q-Learning: Theoretical
    Insights from an Asymptotic Analysis}, journal={IEEE Transactions on Artificial
    Intelligence (to appear)}, author={Ramaswamy, Arunselvan and Hüllermeier, Eyke},
    year={2021} }'
  chicago: 'Ramaswamy, Arunselvan, and Eyke Hüllermeier. “Deep Q-Learning: Theoretical
    Insights from an Asymptotic Analysis.” <i>IEEE Transactions on Artificial Intelligence
    (to Appear)</i>, 2021.'
  ieee: 'A. Ramaswamy and E. Hüllermeier, “Deep Q-Learning: Theoretical Insights from
    an Asymptotic Analysis,” <i>IEEE Transactions on Artificial Intelligence (to appear)</i>,
    2021.'
  mla: 'Ramaswamy, Arunselvan, and Eyke Hüllermeier. “Deep Q-Learning: Theoretical
    Insights from an Asymptotic Analysis.” <i>IEEE Transactions on Artificial Intelligence
    (to Appear)</i>, 2021.'
  short: A. Ramaswamy, E. Hüllermeier, IEEE Transactions on Artificial Intelligence
    (to Appear) (2021).
date_created: 2021-09-10T10:03:25Z
date_updated: 2022-01-06T06:56:08Z
language:
- iso: eng
publication: IEEE Transactions on Artificial Intelligence (to appear)
status: public
title: 'Deep Q-Learning: Theoretical Insights from an Asymptotic Analysis'
type: journal_article
user_id: '66937'
year: '2021'
...
---
_id: '21478'
abstract:
- lang: eng
  text: 'In this work we use autonomous vehicles to improve the performance of Wireless
    Sensor Networks (WSNs). In contrast to other autonomous vehicle applications,
    WSNs have two metrics for performance evaluation. First, quality of information
    (QoI) which is used to measure the quality of sensed data (e.g., measurement uncertainties
    or signal strength). Second, quality of service (QoS) which is used to measure
    the network''s performance for data forwarding (e.g., delay and packet losses).
    As a use case, we consider wireless acoustic sensor networks, where a group of
    speakers move inside a room and there are autonomous vehicles installed with microphones
    for streaming the audio data. We formulate the problem as a Markov decision problem
    (MDP) and solve it using Deep-Q-Networks (DQN). Additionally, we compare the performance
    of DQN solution to two different real-world implementations: speakers holding/passing
    microphones and microphones being preinstalled in fixed positions. We show that
    the performance of autonomous vehicles in terms of QoI and QoS is better than
    the real-world implementation in some scenarios. Moreover, we study the impact
    of the vehicles speed on the learning process of the DQN solution and show how
    low speeds degrade the performance. Finally, we compare the DQN solution to a
    heuristic one and provide theoretical analysis of the performance with respect
    to dynamic WSNs.'
author:
- first_name: Haitham
  full_name: Afifi, Haitham
  id: '65718'
  last_name: Afifi
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: 'Afifi H, Ramaswamy A, Karl H. Reinforcement Learning for Autonomous Vehicle
    Movements in Wireless Sensor Networks. In: <i>2021 IEEE International Conference
    on Communications (ICC): IoT and Sensor Networks Symposium (IEEE ICC’21 - IoTSN
    Symposium)</i>. Montreal, Canada; 2021.'
  apa: 'Afifi, H., Ramaswamy, A., &#38; Karl, H. (2021). Reinforcement Learning for
    Autonomous Vehicle Movements in Wireless Sensor Networks. In <i>2021 IEEE International
    Conference on Communications (ICC): IoT and Sensor Networks Symposium (IEEE ICC’21
    - IoTSN Symposium)</i>. Montreal, Canada.'
  bibtex: '@inproceedings{Afifi_Ramaswamy_Karl_2021, place={Montreal, Canada}, title={Reinforcement
    Learning for Autonomous Vehicle Movements in Wireless Sensor Networks}, booktitle={2021
    IEEE International Conference on Communications (ICC): IoT and Sensor Networks
    Symposium (IEEE ICC’21 - IoTSN Symposium)}, author={Afifi, Haitham and Ramaswamy,
    Arunselvan and Karl, Holger}, year={2021} }'
  chicago: 'Afifi, Haitham, Arunselvan Ramaswamy, and Holger Karl. “Reinforcement
    Learning for Autonomous Vehicle Movements in Wireless Sensor Networks.” In <i>2021
    IEEE International Conference on Communications (ICC): IoT and Sensor Networks
    Symposium (IEEE ICC’21 - IoTSN Symposium)</i>. Montreal, Canada, 2021.'
  ieee: 'H. Afifi, A. Ramaswamy, and H. Karl, “Reinforcement Learning for Autonomous
    Vehicle Movements in Wireless Sensor Networks,” in <i>2021 IEEE International
    Conference on Communications (ICC): IoT and Sensor Networks Symposium (IEEE ICC’21
    - IoTSN Symposium)</i>, 2021.'
  mla: 'Afifi, Haitham, et al. “Reinforcement Learning for Autonomous Vehicle Movements
    in Wireless Sensor Networks.” <i>2021 IEEE International Conference on Communications
    (ICC): IoT and Sensor Networks Symposium (IEEE ICC’21 - IoTSN Symposium)</i>,
    2021.'
  short: 'H. Afifi, A. Ramaswamy, H. Karl, in: 2021 IEEE International Conference
    on Communications (ICC): IoT and Sensor Networks Symposium (IEEE ICC’21 - IoTSN
    Symposium), Montreal, Canada, 2021.'
date_created: 2021-03-12T16:02:04Z
date_updated: 2022-01-06T06:55:00Z
language:
- iso: eng
place: Montreal, Canada
project:
- _id: '27'
  name: Akustische Sensornetzwerke - Teilprojekt "Verteilte akustische Signalverarbeitung
    über funkbasierte Sensornetzwerke
publication: '2021 IEEE International Conference on Communications (ICC): IoT and
  Sensor Networks Symposium (IEEE ICC''21 - IoTSN Symposium)'
status: public
title: Reinforcement Learning for Autonomous Vehicle Movements in Wireless Sensor
  Networks
type: conference
user_id: '65718'
year: '2021'
...
---
_id: '21479'
abstract:
- lang: eng
  text: Two of the most important metrics when developing Wireless Sensor Networks
    (WSNs) applications are the Quality of Information (QoI) and Quality of Service
    (QoS). The former is used to specify the quality of the collected data by the
    sensors (e.g., measurements error or signal's intensity), while the latter defines
    the network's performance and availability (e.g., packet losses and latency).
    In this paper, we consider an example of wireless acoustic sensor networks, where
    we select a subset of microphones for two different objectives. First, we maximize
    the recording quality under QoS constraints. Second, we apply a trade-off between
    QoI and QoS. We formulate the problem as a constrained Markov Decision Problem
    (MDP) and solve it using reinforcement learning (RL). We compare the RL solution
    to a baseline model and show that in case of QoS-guarantee objective, the RL solution
    has an optimality gap up to 1\%. Meanwhile, the RL solution is better than the
    baseline with improvements up to 23\%, when using the trade-off objective.
author:
- first_name: Haitham
  full_name: Afifi, Haitham
  id: '65718'
  last_name: Afifi
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
citation:
  ama: 'Afifi H, Ramaswamy A, Karl H. A Reinforcement Learning QoI/QoS-Aware Approach
    in Acoustic Sensor Networks. In: <i>2021 IEEE 18th Annual Consumer Communications
    \&#38; Networking Conference (CCNC) (CCNC 2021)</i>. ; 2021.'
  apa: Afifi, H., Ramaswamy, A., &#38; Karl, H. (2021). A Reinforcement Learning QoI/QoS-Aware
    Approach in Acoustic Sensor Networks. In <i>2021 IEEE 18th Annual Consumer Communications
    \&#38; Networking Conference (CCNC) (CCNC 2021)</i>.
  bibtex: '@inproceedings{Afifi_Ramaswamy_Karl_2021, title={A Reinforcement Learning
    QoI/QoS-Aware Approach in Acoustic Sensor Networks}, booktitle={2021 IEEE 18th
    Annual Consumer Communications \&#38; Networking Conference (CCNC) (CCNC 2021)},
    author={Afifi, Haitham and Ramaswamy, Arunselvan and Karl, Holger}, year={2021}
    }'
  chicago: Afifi, Haitham, Arunselvan Ramaswamy, and Holger Karl. “A Reinforcement
    Learning QoI/QoS-Aware Approach in Acoustic Sensor Networks.” In <i>2021 IEEE
    18th Annual Consumer Communications \&#38; Networking Conference (CCNC) (CCNC
    2021)</i>, 2021.
  ieee: H. Afifi, A. Ramaswamy, and H. Karl, “A Reinforcement Learning QoI/QoS-Aware
    Approach in Acoustic Sensor Networks,” in <i>2021 IEEE 18th Annual Consumer Communications
    \&#38; Networking Conference (CCNC) (CCNC 2021)</i>, 2021.
  mla: Afifi, Haitham, et al. “A Reinforcement Learning QoI/QoS-Aware Approach in
    Acoustic Sensor Networks.” <i>2021 IEEE 18th Annual Consumer Communications \&#38;
    Networking Conference (CCNC) (CCNC 2021)</i>, 2021.
  short: 'H. Afifi, A. Ramaswamy, H. Karl, in: 2021 IEEE 18th Annual Consumer Communications
    \&#38; Networking Conference (CCNC) (CCNC 2021), 2021.'
date_created: 2021-03-12T16:03:53Z
date_updated: 2022-01-06T06:55:00Z
keyword:
- reinforcement learning
- wireless sensor networks
- resource allocation
- acoustic sensor networks
language:
- iso: eng
project:
- _id: '27'
  name: Akustische Sensornetzwerke - Teilprojekt "Verteilte akustische Signalverarbeitung
    über funkbasierte Sensornetzwerke
publication: 2021 IEEE 18th Annual Consumer Communications \& Networking Conference
  (CCNC) (CCNC 2021)
status: public
title: A Reinforcement Learning QoI/QoS-Aware Approach in Acoustic Sensor Networks
type: conference
user_id: '65718'
year: '2021'
...
---
_id: '24140'
author:
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Adrian
  full_name: Redder, Adrian
  id: '52265'
  last_name: Redder
  orcid: https://orcid.org/0000-0001-7391-4688
- first_name: Daniel E.
  full_name: Quevedo, Daniel E.
  last_name: Quevedo
citation:
  ama: Ramaswamy A, Redder A, Quevedo DE. Distributed optimization over time-varying
    networks with stochastic information delays. <i>IEEE Transactions on Automatic
    Control</i>. Published online 2021:1-1. doi:<a href="https://doi.org/10.1109/TAC.2021.3108492">10.1109/TAC.2021.3108492</a>
  apa: Ramaswamy, A., Redder, A., &#38; Quevedo, D. E. (2021). Distributed optimization
    over time-varying networks with stochastic information delays. <i>IEEE Transactions
    on Automatic Control</i>, 1–1. <a href="https://doi.org/10.1109/TAC.2021.3108492">https://doi.org/10.1109/TAC.2021.3108492</a>
  bibtex: '@article{Ramaswamy_Redder_Quevedo_2021, title={Distributed optimization
    over time-varying networks with stochastic information delays}, DOI={<a href="https://doi.org/10.1109/TAC.2021.3108492">10.1109/TAC.2021.3108492</a>},
    journal={IEEE Transactions on Automatic Control}, author={Ramaswamy, Arunselvan
    and Redder, Adrian and Quevedo, Daniel E.}, year={2021}, pages={1–1} }'
  chicago: Ramaswamy, Arunselvan, Adrian Redder, and Daniel E. Quevedo. “Distributed
    Optimization over Time-Varying Networks with Stochastic Information Delays.” <i>IEEE
    Transactions on Automatic Control</i>, 2021, 1–1. <a href="https://doi.org/10.1109/TAC.2021.3108492">https://doi.org/10.1109/TAC.2021.3108492</a>.
  ieee: 'A. Ramaswamy, A. Redder, and D. E. Quevedo, “Distributed optimization over
    time-varying networks with stochastic information delays,” <i>IEEE Transactions
    on Automatic Control</i>, pp. 1–1, 2021, doi: <a href="https://doi.org/10.1109/TAC.2021.3108492">10.1109/TAC.2021.3108492</a>.'
  mla: Ramaswamy, Arunselvan, et al. “Distributed Optimization over Time-Varying Networks
    with Stochastic Information Delays.” <i>IEEE Transactions on Automatic Control</i>,
    2021, pp. 1–1, doi:<a href="https://doi.org/10.1109/TAC.2021.3108492">10.1109/TAC.2021.3108492</a>.
  short: A. Ramaswamy, A. Redder, D.E. Quevedo, IEEE Transactions on Automatic Control
    (2021) 1–1.
date_created: 2021-09-10T09:48:55Z
date_updated: 2022-08-16T09:16:43Z
doi: 10.1109/TAC.2021.3108492
language:
- iso: eng
page: 1-1
project:
- _id: '24'
  name: 'NICCI-CN: Netzgewahre Regelung & regelungsgewahre Netze'
publication: IEEE Transactions on Automatic Control
status: public
title: Distributed optimization over time-varying networks with stochastic information
  delays
type: journal_article
user_id: '52265'
year: '2021'
...
---
_id: '24145'
author:
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
citation:
  ama: 'Ramaswamy A. DSPG: Decentralized Simultaneous Perturbations Gradient Descent
    Scheme. In: <i>2020 28th Euromicro International Conference on Parallel, Distributed
    and Network-Based Processing (PDP)</i>. ; 2020:54-62.'
  apa: 'Ramaswamy, A. (2020). DSPG: Decentralized Simultaneous Perturbations Gradient
    Descent Scheme. <i>2020 28th Euromicro International Conference on Parallel, Distributed
    and Network-Based Processing (PDP)</i>, 54–62.'
  bibtex: '@inproceedings{Ramaswamy_2020, title={DSPG: Decentralized Simultaneous
    Perturbations Gradient Descent Scheme}, booktitle={2020 28th Euromicro International
    Conference on Parallel, Distributed and Network-Based Processing (PDP)}, author={Ramaswamy,
    Arunselvan}, year={2020}, pages={54–62} }'
  chicago: 'Ramaswamy, Arunselvan. “DSPG: Decentralized Simultaneous Perturbations
    Gradient Descent Scheme.” In <i>2020 28th Euromicro International Conference on
    Parallel, Distributed and Network-Based Processing (PDP)</i>, 54–62, 2020.'
  ieee: 'A. Ramaswamy, “DSPG: Decentralized Simultaneous Perturbations Gradient Descent
    Scheme,” in <i>2020 28th Euromicro International Conference on Parallel, Distributed
    and Network-Based Processing (PDP)</i>, 2020, pp. 54–62.'
  mla: 'Ramaswamy, Arunselvan. “DSPG: Decentralized Simultaneous Perturbations Gradient
    Descent Scheme.” <i>2020 28th Euromicro International Conference on Parallel,
    Distributed and Network-Based Processing (PDP)</i>, 2020, pp. 54–62.'
  short: 'A. Ramaswamy, in: 2020 28th Euromicro International Conference on Parallel,
    Distributed and Network-Based Processing (PDP), 2020, pp. 54–62.'
date_created: 2021-09-10T09:58:09Z
date_updated: 2022-01-06T06:56:08Z
language:
- iso: eng
page: 54-62
publication: 2020 28th Euromicro International Conference on Parallel, Distributed
  and Network-Based Processing (PDP)
status: public
title: 'DSPG: Decentralized Simultaneous Perturbations Gradient Descent Scheme'
type: conference
user_id: '66937'
year: '2020'
...
---
_id: '24146'
author:
- first_name: Stefan Helmut
  full_name: Heid, Stefan Helmut
  id: '39640'
  last_name: Heid
  orcid: 0000-0002-9461-7372
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Eyke
  full_name: Hüllermeier, Eyke
  id: '48129'
  last_name: Hüllermeier
citation:
  ama: 'Heid SH, Ramaswamy A, Hüllermeier E. Constrained Multi-Agent Optimization
    with Unbounded Information Delay. In: <i>Proceedings-30. Workshop Computational
    Intelligence: Berlin, 26.-27. November 2020</i>. Vol 26. ; 2020:247.'
  apa: 'Heid, S. H., Ramaswamy, A., &#38; Hüllermeier, E. (2020). Constrained Multi-Agent
    Optimization with Unbounded Information Delay. <i>Proceedings-30. Workshop Computational
    Intelligence: Berlin, 26.-27. November 2020</i>, <i>26</i>, 247.'
  bibtex: '@inproceedings{Heid_Ramaswamy_Hüllermeier_2020, title={Constrained Multi-Agent
    Optimization with Unbounded Information Delay}, volume={26}, booktitle={Proceedings-30.
    Workshop Computational Intelligence: Berlin, 26.-27. November 2020}, author={Heid,
    Stefan Helmut and Ramaswamy, Arunselvan and Hüllermeier, Eyke}, year={2020}, pages={247}
    }'
  chicago: 'Heid, Stefan Helmut, Arunselvan Ramaswamy, and Eyke Hüllermeier. “Constrained
    Multi-Agent Optimization with Unbounded Information Delay.” In <i>Proceedings-30.
    Workshop Computational Intelligence: Berlin, 26.-27. November 2020</i>, 26:247,
    2020.'
  ieee: 'S. H. Heid, A. Ramaswamy, and E. Hüllermeier, “Constrained Multi-Agent Optimization
    with Unbounded Information Delay,” in <i>Proceedings-30. Workshop Computational
    Intelligence: Berlin, 26.-27. November 2020</i>, 2020, vol. 26, p. 247.'
  mla: 'Heid, Stefan Helmut, et al. “Constrained Multi-Agent Optimization with Unbounded
    Information Delay.” <i>Proceedings-30. Workshop Computational Intelligence: Berlin,
    26.-27. November 2020</i>, vol. 26, 2020, p. 247.'
  short: 'S.H. Heid, A. Ramaswamy, E. Hüllermeier, in: Proceedings-30. Workshop Computational
    Intelligence: Berlin, 26.-27. November 2020, 2020, p. 247.'
date_created: 2021-09-10T09:59:16Z
date_updated: 2022-01-06T06:56:08Z
intvolume: '        26'
language:
- iso: eng
page: '247'
publication: 'Proceedings-30. Workshop Computational Intelligence: Berlin, 26.-27.
  November 2020'
status: public
title: Constrained Multi-Agent Optimization with Unbounded Information Delay
type: conference
user_id: '66937'
volume: 26
year: '2020'
...
---
_id: '24147'
author:
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Shalabh
  full_name: Bhatnagar, Shalabh
  last_name: Bhatnagar
- first_name: Daniel E
  full_name: Quevedo, Daniel E
  last_name: Quevedo
citation:
  ama: Ramaswamy A, Bhatnagar S, Quevedo DE. Asynchronous stochastic approximations
    with asymptotically biased errors and deep multi-agent learning. <i>IEEE Transactions
    on Automatic Control</i>. Published online 2020.
  apa: Ramaswamy, A., Bhatnagar, S., &#38; Quevedo, D. E. (2020). Asynchronous stochastic
    approximations with asymptotically biased errors and deep multi-agent learning.
    <i>IEEE Transactions on Automatic Control</i>.
  bibtex: '@article{Ramaswamy_Bhatnagar_Quevedo_2020, title={Asynchronous stochastic
    approximations with asymptotically biased errors and deep multi-agent learning},
    journal={IEEE Transactions on Automatic Control}, publisher={IEEE}, author={Ramaswamy,
    Arunselvan and Bhatnagar, Shalabh and Quevedo, Daniel E}, year={2020} }'
  chicago: Ramaswamy, Arunselvan, Shalabh Bhatnagar, and Daniel E Quevedo. “Asynchronous
    Stochastic Approximations with Asymptotically Biased Errors and Deep Multi-Agent
    Learning.” <i>IEEE Transactions on Automatic Control</i>, 2020.
  ieee: A. Ramaswamy, S. Bhatnagar, and D. E. Quevedo, “Asynchronous stochastic approximations
    with asymptotically biased errors and deep multi-agent learning,” <i>IEEE Transactions
    on Automatic Control</i>, 2020.
  mla: Ramaswamy, Arunselvan, et al. “Asynchronous Stochastic Approximations with
    Asymptotically Biased Errors and Deep Multi-Agent Learning.” <i>IEEE Transactions
    on Automatic Control</i>, IEEE, 2020.
  short: A. Ramaswamy, S. Bhatnagar, D.E. Quevedo, IEEE Transactions on Automatic
    Control (2020).
date_created: 2021-09-10T10:01:18Z
date_updated: 2022-01-06T06:56:08Z
language:
- iso: eng
publication: IEEE Transactions on Automatic Control
publisher: IEEE
status: public
title: Asynchronous stochastic approximations with asymptotically biased errors and
  deep multi-agent learning
type: journal_article
user_id: '66937'
year: '2020'
...
---
_id: '24141'
author:
- first_name: Jonas
  full_name: König, Jonas
  last_name: König
- first_name: Simon
  full_name: Malberg, Simon
  last_name: Malberg
- first_name: Martin
  full_name: Martens, Martin
  last_name: Martens
- first_name: Sebastian
  full_name: Niehaus, Sebastian
  last_name: Niehaus
- first_name: Artus
  full_name: Krohn-Grimberghe, Artus
  last_name: Krohn-Grimberghe
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
citation:
  ama: 'König J, Malberg S, Martens M, Niehaus S, Krohn-Grimberghe A, Ramaswamy A.
    Multi-stage reinforcement learning for object detection. In: <i>Science and Information
    Conference</i>. ; 2019:178-191.'
  apa: König, J., Malberg, S., Martens, M., Niehaus, S., Krohn-Grimberghe, A., &#38;
    Ramaswamy, A. (2019). Multi-stage reinforcement learning for object detection.
    <i>Science and Information Conference</i>, 178–191.
  bibtex: '@inproceedings{König_Malberg_Martens_Niehaus_Krohn-Grimberghe_Ramaswamy_2019,
    title={Multi-stage reinforcement learning for object detection}, booktitle={Science
    and Information Conference}, author={König, Jonas and Malberg, Simon and Martens,
    Martin and Niehaus, Sebastian and Krohn-Grimberghe, Artus and Ramaswamy, Arunselvan},
    year={2019}, pages={178–191} }'
  chicago: König, Jonas, Simon Malberg, Martin Martens, Sebastian Niehaus, Artus Krohn-Grimberghe,
    and Arunselvan Ramaswamy. “Multi-Stage Reinforcement Learning for Object Detection.”
    In <i>Science and Information Conference</i>, 178–91, 2019.
  ieee: J. König, S. Malberg, M. Martens, S. Niehaus, A. Krohn-Grimberghe, and A.
    Ramaswamy, “Multi-stage reinforcement learning for object detection,” in <i>Science
    and Information Conference</i>, 2019, pp. 178–191.
  mla: König, Jonas, et al. “Multi-Stage Reinforcement Learning for Object Detection.”
    <i>Science and Information Conference</i>, 2019, pp. 178–91.
  short: 'J. König, S. Malberg, M. Martens, S. Niehaus, A. Krohn-Grimberghe, A. Ramaswamy,
    in: Science and Information Conference, 2019, pp. 178–191.'
date_created: 2021-09-10T09:50:53Z
date_updated: 2022-01-06T06:56:08Z
language:
- iso: eng
page: 178-191
publication: Science and Information Conference
status: public
title: Multi-stage reinforcement learning for object detection
type: conference
user_id: '66937'
year: '2019'
...
---
_id: '15741'
abstract:
- lang: eng
  text: "\r\nIn many cyber–physical systems, we encounter the problem of remote state
    estimation of geo- graphically distributed and remote physical processes. This
    paper studies the scheduling of sensor transmissions to estimate the states of
    multiple remote, dynamic processes. Information from the different sensors has
    to be transmitted to a central gateway over a wireless network for monitoring
    purposes, where typically fewer wireless channels are available than there are
    processes to be monitored. For effective estimation at the gateway, the sensors
    need to be scheduled appropriately, i.e., at each time instant one needs to decide
    which sensors have network access and which ones do not. To address this scheduling
    problem, we formulate an associated Markov decision process (MDP). This MDP is
    then solved using a Deep Q-Network, a recent deep reinforcement learning algorithm
    that is at once scalable and model-free. We compare our scheduling algorithm to
    popular scheduling algorithms such as round-robin and reduced-waiting-time, among
    others. Our algorithm is shown to significantly outperform these algorithms for
    many example scenario"
article_number: '108759'
author:
- first_name: Alex S.
  full_name: Leong, Alex S.
  last_name: Leong
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Daniel E.
  full_name: Quevedo, Daniel E.
  last_name: Quevedo
- first_name: Holger
  full_name: Karl, Holger
  id: '126'
  last_name: Karl
- first_name: Ling
  full_name: Shi, Ling
  last_name: Shi
citation:
  ama: Leong AS, Ramaswamy A, Quevedo DE, Karl H, Shi L. Deep reinforcement learning
    for wireless sensor scheduling in cyber–physical systems. <i>Automatica</i>. 2019.
    doi:<a href="https://doi.org/10.1016/j.automatica.2019.108759">10.1016/j.automatica.2019.108759</a>
  apa: Leong, A. S., Ramaswamy, A., Quevedo, D. E., Karl, H., &#38; Shi, L. (2019).
    Deep reinforcement learning for wireless sensor scheduling in cyber–physical systems.
    <i>Automatica</i>. <a href="https://doi.org/10.1016/j.automatica.2019.108759">https://doi.org/10.1016/j.automatica.2019.108759</a>
  bibtex: '@article{Leong_Ramaswamy_Quevedo_Karl_Shi_2019, title={Deep reinforcement
    learning for wireless sensor scheduling in cyber–physical systems}, DOI={<a href="https://doi.org/10.1016/j.automatica.2019.108759">10.1016/j.automatica.2019.108759</a>},
    number={108759}, journal={Automatica}, author={Leong, Alex S. and Ramaswamy, Arunselvan
    and Quevedo, Daniel E. and Karl, Holger and Shi, Ling}, year={2019} }'
  chicago: Leong, Alex S., Arunselvan Ramaswamy, Daniel E. Quevedo, Holger Karl, and
    Ling Shi. “Deep Reinforcement Learning for Wireless Sensor Scheduling in Cyber–Physical
    Systems.” <i>Automatica</i>, 2019. <a href="https://doi.org/10.1016/j.automatica.2019.108759">https://doi.org/10.1016/j.automatica.2019.108759</a>.
  ieee: A. S. Leong, A. Ramaswamy, D. E. Quevedo, H. Karl, and L. Shi, “Deep reinforcement
    learning for wireless sensor scheduling in cyber–physical systems,” <i>Automatica</i>,
    2019.
  mla: Leong, Alex S., et al. “Deep Reinforcement Learning for Wireless Sensor Scheduling
    in Cyber–Physical Systems.” <i>Automatica</i>, 108759, 2019, doi:<a href="https://doi.org/10.1016/j.automatica.2019.108759">10.1016/j.automatica.2019.108759</a>.
  short: A.S. Leong, A. Ramaswamy, D.E. Quevedo, H. Karl, L. Shi, Automatica (2019).
date_created: 2020-01-31T15:55:27Z
date_updated: 2022-01-06T06:52:32Z
ddc:
- '000'
department:
- _id: '7'
- _id: '34'
- _id: '3'
- _id: '75'
- _id: '57'
doi: 10.1016/j.automatica.2019.108759
file:
- access_level: closed
  content_type: application/pdf
  creator: hkarl
  date_created: 2020-01-31T15:57:50Z
  date_updated: 2020-01-31T15:57:50Z
  file_id: '15743'
  file_name: leoram20a.pdf
  file_size: '675382'
  relation: main_file
  success: 1
file_date_updated: 2020-01-31T15:57:50Z
has_accepted_license: '1'
language:
- iso: eng
project:
- _id: '24'
  name: Netzgewahre Regelung & regelungsgewahre Netze
publication: Automatica
publication_identifier:
  issn:
  - 0005-1098
publication_status: published
quality_controlled: '1'
status: public
title: Deep reinforcement learning for wireless sensor scheduling in cyber–physical
  systems
type: journal_article
user_id: '126'
year: '2019'
...
---
_id: '13443'
abstract:
- lang: eng
  text: "This work considers the problem of control and resource allocation in networked\r\nsystems.
    To this end, we present DIRA a Deep reinforcement learning based Iterative Resource\r\nAllocation
    algorithm, which is scalable and control-aware. Our algorithm is tailored towards\r\nlarge-scale
    problems where control and scheduling need to act jointly to optimize performance.\r\nDIRA
    can be used to schedule general time-domain optimization based controllers. In
    the present\r\nwork, we focus on control designs based on suitably adapted linear
    quadratic regulators. We\r\napply our algorithm to networked systems with correlated
    fading communication channels. Our\r\nsimulations show that DIRA scales well to
    large scheduling problems."
author:
- first_name: Adrian
  full_name: Redder, Adrian
  id: '52265'
  last_name: Redder
  orcid: https://orcid.org/0000-0001-7391-4688
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Daniel
  full_name: Quevedo, Daniel
  last_name: Quevedo
citation:
  ama: 'Redder A, Ramaswamy A, Quevedo D. Deep reinforcement learning for scheduling
    in large-scale networked control systems. In: <i>Proceedings of the 8th IFAC Workshop
    on Distributed Estimation and Control in Networked Systems</i>. ; 2019.'
  apa: Redder, A., Ramaswamy, A., &#38; Quevedo, D. (2019). Deep reinforcement learning
    for scheduling in large-scale networked control systems. In <i>Proceedings of
    the 8th IFAC Workshop on Distributed Estimation and Control in Networked Systems</i>.
    Chicago, USA.
  bibtex: '@inproceedings{Redder_Ramaswamy_Quevedo_2019, title={Deep reinforcement
    learning for scheduling in large-scale networked control systems}, booktitle={Proceedings
    of the 8th IFAC Workshop on Distributed Estimation and Control in Networked Systems},
    author={Redder, Adrian and Ramaswamy, Arunselvan and Quevedo, Daniel}, year={2019}
    }'
  chicago: Redder, Adrian, Arunselvan Ramaswamy, and Daniel Quevedo. “Deep Reinforcement
    Learning for Scheduling in Large-Scale Networked Control Systems.” In <i>Proceedings
    of the 8th IFAC Workshop on Distributed Estimation and Control in Networked Systems</i>,
    2019.
  ieee: A. Redder, A. Ramaswamy, and D. Quevedo, “Deep reinforcement learning for
    scheduling in large-scale networked control systems,” in <i>Proceedings of the
    8th IFAC Workshop on Distributed Estimation and Control in Networked Systems</i>,
    Chicago, USA, 2019.
  mla: Redder, Adrian, et al. “Deep Reinforcement Learning for Scheduling in Large-Scale
    Networked Control Systems.” <i>Proceedings of the 8th IFAC Workshop on Distributed
    Estimation and Control in Networked Systems</i>, 2019.
  short: 'A. Redder, A. Ramaswamy, D. Quevedo, in: Proceedings of the 8th IFAC Workshop
    on Distributed Estimation and Control in Networked Systems, 2019.'
conference:
  end_date: 2019-09-17
  location: Chicago, USA
  name: 8th IFAC Workshop on Distributed Estimation and Control in Networked Systems
    - NECSYS 2019
  start_date: 2019-09-16
date_created: 2019-09-23T16:00:58Z
date_updated: 2022-01-06T06:51:36Z
ddc:
- '620'
file:
- access_level: local
  content_type: application/pdf
  creator: aredder
  date_created: 2019-09-23T15:48:33Z
  date_updated: 2019-09-23T16:21:16Z
  file_id: '13444'
  file_name: ifacconf.pdf
  file_size: 371429
  relation: main_file
file_date_updated: 2019-09-23T16:21:16Z
has_accepted_license: '1'
keyword:
- Networked control systems
- deep reinforcement learning
- large-scale systems
- resource scheduling
- stochastic control
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/1905.05992
oa: '1'
project:
- _id: '52'
  name: Computing Resources Provided by the Paderborn Center for Parallel Computing
publication: Proceedings of the 8th IFAC Workshop on Distributed Estimation and Control
  in Networked Systems
publication_status: published
status: public
title: Deep reinforcement learning for scheduling in large-scale networked control
  systems
type: conference
user_id: '52265'
year: '2019'
...
---
_id: '24150'
author:
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Shalabh
  full_name: Bhatnagar, Shalabh
  last_name: Bhatnagar
citation:
  ama: Ramaswamy A, Bhatnagar S. Stability of stochastic approximations with “controlled
    markov” noise and temporal difference learning. <i>IEEE Transactions on Automatic
    Control</i>. 2018;64(6):2614-2620.
  apa: Ramaswamy, A., &#38; Bhatnagar, S. (2018). Stability of stochastic approximations
    with “controlled markov” noise and temporal difference learning. <i>IEEE Transactions
    on Automatic Control</i>, <i>64</i>(6), 2614–2620.
  bibtex: '@article{Ramaswamy_Bhatnagar_2018, title={Stability of stochastic approximations
    with “controlled markov” noise and temporal difference learning}, volume={64},
    number={6}, journal={IEEE Transactions on Automatic Control}, publisher={IEEE},
    author={Ramaswamy, Arunselvan and Bhatnagar, Shalabh}, year={2018}, pages={2614–2620}
    }'
  chicago: 'Ramaswamy, Arunselvan, and Shalabh Bhatnagar. “Stability of Stochastic
    Approximations with ‘Controlled Markov’ Noise and Temporal Difference Learning.”
    <i>IEEE Transactions on Automatic Control</i> 64, no. 6 (2018): 2614–20.'
  ieee: A. Ramaswamy and S. Bhatnagar, “Stability of stochastic approximations with
    ‘controlled markov’ noise and temporal difference learning,” <i>IEEE Transactions
    on Automatic Control</i>, vol. 64, no. 6, pp. 2614–2620, 2018.
  mla: Ramaswamy, Arunselvan, and Shalabh Bhatnagar. “Stability of Stochastic Approximations
    with ‘Controlled Markov’ Noise and Temporal Difference Learning.” <i>IEEE Transactions
    on Automatic Control</i>, vol. 64, no. 6, IEEE, 2018, pp. 2614–20.
  short: A. Ramaswamy, S. Bhatnagar, IEEE Transactions on Automatic Control 64 (2018)
    2614–2620.
date_created: 2021-09-10T10:17:54Z
date_updated: 2022-01-06T06:56:08Z
department:
- _id: '355'
intvolume: '        64'
issue: '6'
language:
- iso: eng
page: 2614-2620
publication: IEEE Transactions on Automatic Control
publisher: IEEE
status: public
title: Stability of stochastic approximations with “controlled markov” noise and temporal
  difference learning
type: journal_article
user_id: '66937'
volume: 64
year: '2018'
...
---
_id: '24151'
author:
- first_name: Burak
  full_name: Demirel, Burak
  last_name: Demirel
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Daniel E
  full_name: Quevedo, Daniel E
  last_name: Quevedo
- first_name: Holger
  full_name: Karl, Holger
  last_name: Karl
citation:
  ama: 'Demirel B, Ramaswamy A, Quevedo DE, Karl H. Deepcas: A deep reinforcement
    learning algorithm for control-aware scheduling. <i>IEEE Control Systems Letters</i>.
    2018;2(4):737-742.'
  apa: 'Demirel, B., Ramaswamy, A., Quevedo, D. E., &#38; Karl, H. (2018). Deepcas:
    A deep reinforcement learning algorithm for control-aware scheduling. <i>IEEE
    Control Systems Letters</i>, <i>2</i>(4), 737–742.'
  bibtex: '@article{Demirel_Ramaswamy_Quevedo_Karl_2018, title={Deepcas: A deep reinforcement
    learning algorithm for control-aware scheduling}, volume={2}, number={4}, journal={IEEE
    Control Systems Letters}, publisher={IEEE}, author={Demirel, Burak and Ramaswamy,
    Arunselvan and Quevedo, Daniel E and Karl, Holger}, year={2018}, pages={737–742}
    }'
  chicago: 'Demirel, Burak, Arunselvan Ramaswamy, Daniel E Quevedo, and Holger Karl.
    “Deepcas: A Deep Reinforcement Learning Algorithm for Control-Aware Scheduling.”
    <i>IEEE Control Systems Letters</i> 2, no. 4 (2018): 737–42.'
  ieee: 'B. Demirel, A. Ramaswamy, D. E. Quevedo, and H. Karl, “Deepcas: A deep reinforcement
    learning algorithm for control-aware scheduling,” <i>IEEE Control Systems Letters</i>,
    vol. 2, no. 4, pp. 737–742, 2018.'
  mla: 'Demirel, Burak, et al. “Deepcas: A Deep Reinforcement Learning Algorithm for
    Control-Aware Scheduling.” <i>IEEE Control Systems Letters</i>, vol. 2, no. 4,
    IEEE, 2018, pp. 737–42.'
  short: B. Demirel, A. Ramaswamy, D.E. Quevedo, H. Karl, IEEE Control Systems Letters
    2 (2018) 737–742.
date_created: 2021-09-10T10:19:07Z
date_updated: 2022-01-06T06:56:08Z
department:
- _id: '355'
intvolume: '         2'
issue: '4'
language:
- iso: eng
page: 737-742
publication: IEEE Control Systems Letters
publisher: IEEE
status: public
title: 'Deepcas: A deep reinforcement learning algorithm for control-aware scheduling'
type: journal_article
user_id: '66937'
volume: 2
year: '2018'
...
---
_id: '24152'
author:
- first_name: Arunselvan
  full_name: Ramaswamy, Arunselvan
  id: '66937'
  last_name: Ramaswamy
  orcid: https://orcid.org/ 0000-0001-7547-8111
- first_name: Shalabh
  full_name: Bhatnagar, Shalabh
  last_name: Bhatnagar
citation:
  ama: Ramaswamy A, Bhatnagar S. Analysis of gradient descent methods with nondiminishing
    bounded errors. <i>IEEE Transactions on Automatic Control</i>. 2017;63(5):1465-1471.
  apa: Ramaswamy, A., &#38; Bhatnagar, S. (2017). Analysis of gradient descent methods
    with nondiminishing bounded errors. <i>IEEE Transactions on Automatic Control</i>,
    <i>63</i>(5), 1465–1471.
  bibtex: '@article{Ramaswamy_Bhatnagar_2017, title={Analysis of gradient descent
    methods with nondiminishing bounded errors}, volume={63}, number={5}, journal={IEEE
    Transactions on Automatic Control}, publisher={IEEE}, author={Ramaswamy, Arunselvan
    and Bhatnagar, Shalabh}, year={2017}, pages={1465–1471} }'
  chicago: 'Ramaswamy, Arunselvan, and Shalabh Bhatnagar. “Analysis of Gradient Descent
    Methods with Nondiminishing Bounded Errors.” <i>IEEE Transactions on Automatic
    Control</i> 63, no. 5 (2017): 1465–71.'
  ieee: A. Ramaswamy and S. Bhatnagar, “Analysis of gradient descent methods with
    nondiminishing bounded errors,” <i>IEEE Transactions on Automatic Control</i>,
    vol. 63, no. 5, pp. 1465–1471, 2017.
  mla: Ramaswamy, Arunselvan, and Shalabh Bhatnagar. “Analysis of Gradient Descent
    Methods with Nondiminishing Bounded Errors.” <i>IEEE Transactions on Automatic
    Control</i>, vol. 63, no. 5, IEEE, 2017, pp. 1465–71.
  short: A. Ramaswamy, S. Bhatnagar, IEEE Transactions on Automatic Control 63 (2017)
    1465–1471.
date_created: 2021-09-10T10:19:40Z
date_updated: 2022-01-06T06:56:08Z
department:
- _id: '355'
extern: '1'
intvolume: '        63'
issue: '5'
language:
- iso: eng
page: 1465-1471
publication: IEEE Transactions on Automatic Control
publisher: IEEE
status: public
title: Analysis of gradient descent methods with nondiminishing bounded errors
type: journal_article
user_id: '66937'
volume: 63
year: '2017'
...
