Research
=============

Follow me on |scholar_logo| `Google Scholar <https://scholar.google.fr/citations?user=g9mO2QcAAAAJ&hl>`_ to be informed of my new publications.

Paper and proceedings
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
• | S. Colla and J. M. Hendrickx, "**On the Optimal Communication Weights in Distributed Optimization Algorithms**", submitted to MTNS 2024.
  | [`PDF <_static/MTNS2024.pdf>`_, `arXiv <https://arxiv.org/abs/2402.05705>`_ ]
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• | A. Rubbens, N. Bousselmi, S. Colla and J. M. Hendrickx, "**Interpolation Constraints for Computing Worst-Case Bounds in Performance Estimation Problems**", tutorial paper for 62th IEEE Conference on Decision and Control (CDC), 2023.
  | [`PDF <_static/CDC_2023_Tutorial_PEP.pdf>`_, `arXiv <https://arxiv.org/abs/2309.12173>`_, `DOI <https://doi.org/10.1109/CDC49753.2023.10384170>`_ ]
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• | S. Colla, J. M. Hendrickx, "**Automatic Performance Estimation for Decentralized Optimization**", IEEE Transactions on Automatic Control, accepted, 2023.
  | [`PDF <_static/Colla_Automatic_Performance_Estimation_for_Decentralized_Optimization.pdf>`_, `arXiv <https://arxiv.org/abs/2203.05963>`_, `DOI <https://doi.org/10.1109/TAC.2023.3251902>`_ ]
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• | S. Colla, J. M. Hendrickx, "**Automated Performance Estimation for Decentralized Optimization via Network Size Independent Problems**", in 61th IEEE Conference on Decision and Control (CDC), 2022.
  | [`PDF <_static/CDC22_Colla.pdf>`_, `arXiv <https://arxiv.org/abs/2210.00695>`_, `DOI <https://doi.org/10.1109/CDC51059.2022.9993346>`_, `slides <_static/CDC22-slides.pdf>`_ ] 
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• | S. Colla, J. M. Hendrickx, "**Automated Worst-Case Performance Analysis of Decentralized Gradient Descent**", in 60th IEEE Conference on Decision and Control (CDC), 2021.
  | [`PDF <_static/CDC21_Colla.pdf>`_,  `arXiv <https://arxiv.org/abs/2103.14396>`_, `DOI <https://doi.org/10.1109/CDC45484.2021.9683505>`_, `slides <_static/CDC21-slides.pdf>`_,  `video <_static/CDC21-video.mp4>`_]

Talks
~~~~~~~
• | `20th EUROpt Workshop <http://www.europt.hu/>`_, August 2023 in Budapest (Hungary).
  | **Exploiting Agent Symmetries for Automatic Performance Analysis of Distributed Optimization Methods**. [`slides <_static/slides_EUROpt_2023.pdf>`_]
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• | **A Size Independent Formulation for Automatic Performance Evaluation of Decentralized Optimization Algorithms**

    - | `42th Benelux Meeting on Systems and Control <https://beneluxmeeting.nl/2023/>`_, March 2023 in Elspeet (Netherlands).
       [`abstract <_static/abstract_Benelux23.pdf>`_]

    - | `PEP-talks <https://performanceestimation.github.io/PEP-talks/february_2023/index.html>`_, February 2023 in Louvain-la-Neuve (Belgium). [`slides <https://performanceestimation.github.io/PEP-talks/february_2023/assets/slides/PEP-talks-2023_S.COLLA.pdf>`_, `video <https://youtu.be/VLIKNN8fmMU>`_]
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• | **Automatic Performance Estimation for Decentralized Optimization**

    - | `ECE Miami University <https://miamioh.edu/cec/academics/departments/ece/index.html>`_ (Graduate Seminar), October 2022 at Oxford (OH, USA).
       [`slides <_static/slides_seminar_MU_ECE_Oct2022.pdf>`_]

    - | `ORC MIT <https://orc.mit.edu/>`_, September 2022 at Boston (MA, USA).
       [`slides <_static/slides_talk_MIT_Sept2022.pdf>`_]

    - | `SeLMA seminar <https://homes.esat.kuleuven.be/~sistawww/biomed/selma/index.php/presentations/seminars/>`_, May 2022 at KULeuven (Belgium).
       [`slides <_static/seminar_KUL_EOS_SeLMA_May2022.pdf>`_]
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• | `41th Benelux Meeting on Systems and Control <https://beneluxmeeting.nl/2022/>`_, July 2022 in Brussels (Belgium).
  | **Performance Estimation Problem for Decentralized Optimization Methods**
  | [`abstract <_static/abstract_Benelux22.pdf>`_, `slides <_static/beneluxMeeting2022-slides.pdf>`_]
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• | `40th Benelux Meeting on Systems and Control <https://beneluxmeeting.nl/2021/>`_, June 2021 in Rotterdam (Netherlands).
  | **Automated Worst-Case Performance Analysis of Decentralized Optimization Methods**
  | [`abstract <_static/abstract_Belenux21.pdf>`_, `slides <_static/beneluxMeeting2021-slides.pdf>`_]
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• | `European Control Conference 2021 (ECC21) <https://ecc21.euca-ecc.org/>`_, June 2021.
  | **Decentralized Estimation in Open Multi-Agent Systems**
  | [`extended abstract <_static/abstract_ECC21.pdf>`_, `slides <_static/ECC21-slides.pdf>`_]

Poster
~~~~~~~~~~~~~~~~~~~~
• | `7th International Conference on Continuous Optimization (ICCOPT) <https://iccopt2022.lehigh.edu/>`_, July 2022 in Bethlehem (USA).
  | **Automatic Performance Estimation for Decentralized Optimization**
  | [`PDF <_static/poster_ICCOPT.pdf>`_]

Toolbox
~~~~~~~~~~~~~~
The |PESTO| toolbox allows to easily formulate and solve Performance Estimation Problems (PEP) in order to automatically find the worst-case performance of optimization methods.
I have contributed to this toolbox by implementing my recent results on PEP for decentralized optimization. This allows anyone to easily analyze worst-case performance of many decentralized algorithms.

Master Thesis
~~~~~~~~~~~~~~

- Sebastien Colla, “**Data fusion in Open Multi-Agent Systems for decentralized estimation**”, École polytechnique de Louvain, Université catholique de Louvain, 2020. (Advisor: Julien M. Hendrickx) [`PDF <_static/MasterThesis.pdf>`_].

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