Search for Latent Variables ICA, Tensors, and NMF Pierre Comon, - - PowerPoint PPT Presentation

Winter School

Search for Latent Variables

ICA, Tensors, and NMF

Pierre Comon, Christian Jutten

GIPSA-lab CNRS, Universit´ e de Grenoble Alpes, and Institut Universitaire de France

February, 2-4, 2015, Villard-de-Lans

Introduction

CHESS project

CHESS means CHallenges for Extraction and Separation of Sources Three challenges:

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Multimodality

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Nonlinear mixtures

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Source Extraction in high- and low-dimension data Applications domains: heart and brain imaging, hyperspectral imaging, chemical sensor arrays, audio-video speech/sound processing

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Introduction

CHESS team

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Permanent team members and collaborators: P .-O. Amblard, M. Babaie-Zadeh (Iran), J. Chanussot, M. Congedo, L. Duarte (Brazil), O. Michel, R. Phlypo, B. Rivet,

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Past and current post-doc.: L. Amini, A. Bourrier, S. Henrot, D. Lahat,

• B. Ouedraogo, M. Niknazar, E. Suviseshamuthu

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PhD students: F . Afdideh, R. Ando, S. Chlaily, L. Drumetz, B. Ehsandoust, L. Korczowsky, P . Narvor, S. Noorzadeh, F . Seddighin

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Introduction

DECODA project

DecoDa means Tensor DECOmpositions for Data Analysis, with applications to heath and environment Three-fold: Theory, Algorithms and Applications

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Theory: Existence & Uniqueness of low-rank approximations (e.g. nonnegative, coupled...)

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Algorithms: optimization, links with structured matrices..

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Applications: antenna array processing, biomedical, water quality monitoring, food and sustainable development, snow and glaciers

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Introduction

DECODA team

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Permanent team members: J-M.Brossier, P .Comon, M.Gay, O.Michel, B.Rivet

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External permanent collaborators: David Brie (Nancy), Rasmus Bro (Copenhagen), Lek-Heng Lim (Chicago), Xavier Luciani (Toulon), Bernard Mourrain (Sophia Antipolis), Giorgio Ottaviani (Firenze)

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Post-docs: R.Cabral, Y.Qi, S.Sahnoun, K.Usevich, M.Veganzones

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PhD students: J.Cohen, F .Raimondi

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