Postdoctoral Researcher

Contact

Sorbonne Université,

Laboratoire Jacques-Louis Lions, 16-26.31,

4, place Jussieu,

75005 Paris Cedex 05.

E-mail : adrien.cotil at sorbonne-universite dot fr

Education

2025 - ... : Postdoc under the supervision of Nathalie Ayi and Fanny Delebecques, Laboratoire Jacques-Louis Lions, Paris.

2021 - 2024 : PhD in Mathematics under the supervision of Bertrand Cloez and Jean-Baptiste Menassol, INRAE, Institut Agro, Montpellier.

2020 - 2021 : Master 2 (M2) “Probabilités et Modèles Aléatoires”, Sorbonne université, Paris.

2019 - 2020 : Research internship "Markov chain modelling of a population genetics experiment", CMAP, Polytechnique, Paris.

2017 - 2019 : Engineering degree “Modélisation, Analyse et Simulation", École des Ponts et Chaussées, Paris.

2014 - 2017 : Preparatory class "Biology, Chemistry, Physics and Earth Sciences (BCPST)", Lycée Malherbe, Caen.

Research interests

Ordinary Differential Equations: Cucker-Smale type model, Flocking phenomenon, Extended Dobrushin's ergodicity coefficient.

Large population limits: non-exchangeable particle systems, collision avoidance models, singular interacting particle system.

Markov Processes: Time-inhomogeneous Markov jump processes, Continuous time Markov chains, Doeblin condition, Perron-Frobenius theory.

Machine learning and Statistics: Graph Inference, Latent variable models, Stochastic Block Model, Vector Autoregression.

PhD Thesis

Modeling animal movement: Study of the Cucker-Smale model and Inference of social interaction networks (PDF).

I did my PhD at INRAE in Montpellier, under the supervision of Bertrand Cloez and Jean-Baptiste Menassol, on the theoretical study of animal movement models and the inference of social structures from movement data.

Key words and phrases : Cucker-Smale type models, Long time behaviour of ODEs, Graph inference, Stochastic block model.

Publications

B. Cloez, A. Cotil, J-B. Menassol, N. Verzelen, Lloyd-type algorithms for fast label recovery in stochastic block models and application for social role inference in animals, writing stage, expected submission : 03/2025.
A. Cotil, Flocking of the Matrix-Based Cucker-Smale model via a generalised Dobrushin's Ergodicity Coefficient, submitted, PDF.
M. Abdouna, D. Ahmat, A. Cotil, H. Jones, Exploring the potential of agent-based models for the problem of transhumance path exits in Sub-Saharan Africa : Chad’s routes as a case study, AgriEngineering, 2025, 7(3): 60, doi: 10.3390/agriengineering7030060, PDF.
A. Cotil, Flocking of the Cucker-Smale and Motsch-Tadmor models on general weighted digraphs via a probabilistic method, Kinetic and Related Models, 2023, 16(4): 581-604, doi: 10.3934/krm.2022040, PDF.

Conferences and Seminars

Festum Pi 2025, Chania, July 2025 (Participant).
3rd Team and Multi-agent Dynamics Workshop, Montpellier, July 2025 (Invited speaker).
12ième Biennale Française des Mathématiques Appliquées et Industrielles, Bordeaux, June 2025 (Mini-Symposium).
Non-local branching processes, CIRM Marseille, September 2024 (Participant).
9e Rencontre de travail et d’activité scientifique Sherbrooke-Montpellier, University of Sherbrook, June 2024 (Invited speaker).
PhD Seminar, Université de Quebec à Montréal, June 2024 (Invited speaker).
Aggregation-Diffusion Equations & Collective Behavior: Analysis, Numerics and Applications, CIRM Marseille, April 2024 (Poster).
Probability Seminar, University of Nancy, February 2024 (Invited speaker).
Euromov Seminar, University of Montpellier, February 2024 (Invited speaker).
Analysis Seminar, University of Tours, November 2023 (Invited speaker).
43rd Conference on Stochastic Processes and their Applications, University of Lisbonne, July 2023 (Poster).
51th Probability Summer School, Saint-Flour, July 2023 (Participant).
Journées des Probabilités, Angers, June 2023 (Speaker).
Modeling in ecology and evolution, Montpellier, May 2023 (Speaker).

Conference organizer

PhD Seminar of SELMET laboratory, Montpellier, April 2023.

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