Search Results for author: Caroline Chaux

Found 4 papers, 0 papers with code

Deep Unrolling for Nonconvex Robust Principal Component Analysis

no code implementations12 Jul 2023 Elizabeth Z. C. Tan, Caroline Chaux, Emmanuel Soubies, Vincent Y. F. Tan

We design algorithms for Robust Principal Component Analysis (RPCA) which consists in decomposing a matrix into the sum of a low rank matrix and a sparse matrix.

Support Exploration Algorithm for Sparse Support Recovery

no code implementations31 Jan 2023 Mimoun Mohamed, François Malgouyres, Valentin Emiya, Caroline Chaux

We introduce a new algorithm promoting sparsity called {\it Support Exploration Algorithm (SEA)} and analyze it in the context of support recovery/model selection problems. The algorithm can be interpreted as an instance of the {\it straight-through estimator (STE)} applied to the resolution of a sparse linear inverse problem.

Model Selection

Unmixing 2D HSQC NMR mixtures with $β$-NMF and sparsity

no code implementations30 Oct 2020 Afef Cherni, Sandrine Anthoine, Caroline Chaux

Nuclear Magnetic Resonance (NMR) spectroscopy is an efficient technique to analyze chemical mixtures in which one acquires spectra of the chemical mixtures along one ore more dimensions.

Medical Physics Optimization and Control

Image Analysis Using a Dual-Tree $M$-Band Wavelet Transform

no code implementations27 Feb 2017 Caroline Chaux, Laurent Duval, Jean-Christophe Pesquet

We propose a 2D generalization to the $M$-band case of the dual-tree decomposition structure (initially proposed by N. Kingsbury and further investigated by I. Selesnick) based on a Hilbert pair of wavelets.

Denoising Tree Decomposition

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