CHESS

Saloua Chlaily: Interaction of modalities

By using several modalities we aim at enhancing the quality and accuracy of the observed signal. However, the expected improvement is not always obtained. In this talk, we consider a simple model of two modalities and analyze their pertinence and interrelations, in term of mutual information, to understand what can deteriorate the estimation of the target signal.

Rafael Ando: Nonlinear blind source separation for chemical sensor arrays based on a polynomial approximation

In this presentation we shall describe how the BSS problem applies to measuring the concentration of ions in a solution using chemical sensors arrays and present a polynomial-based algorithm for solving it. The algorithm is a generalized extension of a previously presented algorithm that used a second-order degree polynomial, which was able to successfully separate the sources under some specific hypotheses and showed good results.