About Me

I am a postdoc in statistics at the ``Institut de Mathématiques de Bordeaux'' (IMB), University of Bordeaux (France), currently working on the identifiability of the state-space models. In an ecological context, I study the dynamics of the abundance of animal and/or plant species over time. This position is in collaboration with Frédéric Barraquand in the Statistical and Theoretical Ecology Group.

I obtained my PhD in statistics from the ``Institut Montpellierain Alexander Grothendieck'' (IMAG) at the University of Montpellier (France). This PhD was jointly supervised by Catherine Trottier and Xavier Bry. I was working on dimension reduction (PLS-type) models and on the interactions between species through factor and mixture models. I followed this position by two years as a teaching fellow in mathematics, in Montpellier as well.

My publications can be found in Google Scholar, ResearchGate and on my web page.

You can find here my Curriculum Vitae in French.

Research interests

  • Dimension reduction through latent variables
  • Identifiability of state-space models
  • Statistical ecology

Contact

Email: julien.gibaud@math.u-bordeaux.fr

Adress: IMB
Université de Bordeaux
351 cours de la Libération
33405 Talence - France
(office 218, bulding 33)

PhD thesis

Gibaud J. (2022). Supervised component-based generalized linear regression for the joint response modeling. [Manuscript]

Papers

Gibaud J., Bry X. and Trottier C. Generalized linear model based on latent factors and supervised components. Computational Statistics. 2024 [Preprint] [Code] [doi]

Gibaud J., Bry X., Trottier C., Mortier F. and Réjou-Méchain M. Response mixture models based on supervised components: Clustering floristic taxa. Statistical Modelling. 2024; 24(3):226-244 [Preprint] [Code] [doi]

Preprints

Heuclin B., Mortier F., Tisné S., Gibaud J., Trottier C. and Denis M. (2024). Bayesian group fused priors. [Preprint] [Code]

Main conferences

Gibaud J., Bry X. and Trottier C., "Generalized linear model based on latent factors and supervised components", 9th International Statistical Ecology Conference, Swansea, Walles, UK (2024)

Gibaud J., Bry X. and Trottier C., "Supervised Component-based Generalized Linear Regression with conditionally covarying responses", 24th International Conference on COMPutational STATistics, Bologna, Italy (2022)

Gibaud J., Bry X. and Trottier C., "Response clustering in component-based GLM", 19th Conference of the Applied Stochastic Models and Data Analysis international society (virtual event), Athens, Greece (2021)

Gibaud J., Bry X. and Trottier C., "Supervised Component-based Generalized Linear Regression with finite mixture models of responses", 41st Conference on Applied Statistics in Ireland (virtual event), Maynooth, Ireland (2021)

Research projects

Member of the ANR GAMBAS beared by Frédéric Mortier. Generating Advances in Modeling Biodiversity And ecosystem Services: statistical improvements and ecological relevance of joint species distribution models (2019-2024)

University of Montpellier,
France

  • Mathematics for the biologists (First year)
  • Logic and set theory (First year)
  • Probabilities (Second year)
  • Sequences and series of functions (Second year)
  • Reduction of endomorphisms (Second year)

Paul Valéry University
Montpellier, France

  • Descriptive statistics in social sciences (First year)
  • Exploratory analysis of the data (First year)
  • Bivariate probabilities and statistics (Second year)
  • Statistics tools (Second year)
  • Multivariate statistics (Fourth year)