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November 29, 2017 to December 1, 2017
LRI
Europe/Zurich timezone

Learning-based strategies for the modeling and reconstruction of dynamical systems

Nov 30, 2017, 1:45 PM
1h
Auditorium Shannon (LRI)

Auditorium Shannon

LRI

Batiment 660

Speaker

Prof. Ronan Fablet (IMT Atlantique, Lab-STICC)

Description

Data-driven strategies for the modeling and reconstruction of dynamical systems emerge as promising alternatives to classical model-driven frameworks, especially when dealing with computationally-demanding models and modeling uncertainty. Data-driven strategies provide novel means to benefit from large-scale observation and/or simulation datasets.
In this talk, we will review data-driven representations of dynamical systems and their applications to the resolution of inverse problems (data assimilation). The focus will be given to analog and neural network representations and address applications to high-dimensional systems. Besides numerical experiments for chaotic systems, we will illustrate applications to the reconstruction of sea surface dynamics from satellite observations.

Some references:
R. Lguensat, P. Tandeo, P. Aillot, R. Fablet. The Analog Data Assimilation. Monthly Weather
Review, 2017.
R. Fablet, P. Viet, R. Lguensat. Data-driven Methods for Spatio-Temporal Interpolation of Sea
Surface Temperature Images. IEEE Trans. on Computational Imaging, 2017.
R. Lguensat, P. Viet, M. Sun, G. Chen, F. Tenglin, B. Chapron, R. Fablet. Data-driven
Interpolation of Sea Level Anomalies using Analog Data Assimilation. https://hal.archives-

Primary author

Prof. Ronan Fablet (IMT Atlantique, Lab-STICC)

Presentation materials