My approach consists in exploiting statistical properties, multiscale analysis, non-linear modelisation, the physical properties of the signals, in order to propose new ways to deal with multi-disciplinary problems. More generally, I seek to extract most information out of experimental data, how that information can be used to build better models and produce better predictions.
I currently work on a new modelling technique. How, starting from observations on a given physical system, to build a reliable model of that system dynamics? When multiple processes interact at different scales, how to obtain a significant model at each of these scales? The goal is to provide a model simple enough to bring some understanding of the system studied, but also a model elaborated enough to allow precise predictions. In order to do so, this project proposes to identify causally equivalent classes of system states, then model their evolution with a stochastic process. Renormalising these equations is necessary in order to relate the scale of the continuum to that, arbitrary, at which data are acquired. Applications primarily concern natural sciences.
This work extends some earlier results to the general case of continuous time, (nearly-)arbitrary data. In order to do so, I have obtained the recognition of Inria's « Exploratory Actions » program, which allows me to fully dedicate time to this fundamental research. I also collaborate with the Complexity Science center at UC Davis.
I have previously worked on remote sensing of the environment and on granular matter physics, domains in which I still maintain some collaborations. That work consisted of the analysis of experimental signals, modelling, designing new algorithms and running numerical simulations.
I am a tenured member of the Geostat team at INRIA Bordeaux.
I was previously affiliated with the following groups and projects:
- I worked at the Institute of Physics of Rennes and at the Physics department of Duke University.
- I was on the board of the French association on Artificial Intelligence (AFIA), for two years.
- I animated for a few years the Inter-disciplinary Research network on Complex Systems applied to the Environnement (RISC-E).