Emmanuel Soubies

@esoubies.bsky.social

CNRS researcher at IRIT. Computational Imaging, Microscopy, Optimization, Machine Learning Website: https://www.irit.fr/~Emmanuel.Soubies/

New paper out! We study a novel property ensuring linear convergente of Bregman Proximal Gradient Methods, and show the applicability of our results to KL regression problems, present for instance in Poisson inverse problems. 🖤 (With @esoubies.bsky.social, Christian Daniele, and Cédric Févotte)

arxiv math.OC@arxiv-math-oc.bsky.social · last mo.

Jonathan Chirinos-Rodr\'iguez, Christian Daniele, C\'edric F\'evotte, Emmanuel Soubies On The Linear Convergence of Bregman Proximal Gradient Methods with Applications to Kullback--Leibler regression https://arxiv.org/abs/2607.05539

Les inscriptions aux journées MODE 2026 à Nice sont désormais ouvertes. Elles se dérouleront du 18 au 20 mars à l'Hôtel Saint-Paul. Les inscriptions sont ouvertes jusqu'au 1 mars (majoration > 9/02). La deadline pour soumettre une communication est le **15 janvier**.

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New paper out! Together with my postdoc advisors @esoubies.bsky.social and Cédric Févotte :) We study the optimization landscape of L0-Bregman relaxations, which naturally arise when one optimizes non-quadratic fidelity terms coupled with the L0-norm. 1/n

arxiv math.OC@arxiv-math-oc.bsky.social · 9mo ago

Jonathan Chirinos-Rodriguez, C\'edric F\'evotte, Emmanuel Soubies Optimization landscape of $\ell_0$-Bregman relaxations https://arxiv.org/abs/2511.12157

Then why does flow matching generalize?? Because it fails! The inductive bias of the neural network prevents from perfectly learning u* and overfitting. In particular neural networks fail to learn the velocity field for two particular time values. See the paper for a finer analysis 😀

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We have a new review out! In this Microscopy & Microanalysis piece, Louisa Mezache and I survey some of the latest commercially available microscope technologies: Nikon NSPARC, Re-scan Gaia, CSR Biotech MI-SIM, refinements to STED, SMLM from Bruker and Abbelight… Check it out with free access:

Advancing Super-Resolution Microscopy: Recent Innovations in Commercial Instruments

Abstract. Super-resolution microscopy techniques have accelerated scientific progress, enabling researchers to explore cellular structures and dynamics wit

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If you are interested by building or applying new microscopes around single molecule, FLIM, in depth imaging, live-cell+ SMLM, we are opening post-doc positions for various backgrounds funded by ERC grant, don’t hesitate to contact me (flexible start). shorturl.at/fYNij shorturl.at/gDQkz

Portail Emploi CNRS - Offre d'emploi - Post-doctorant (H/F) pour le développement de nouveaux concepts en microscopie de fluorescence super-résolue pour l'observation de cellules vivantes

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Our paper "PnP-Flow: Plug-and-Play Image Restoration with Flow Matching" has been accepted to ICLR 2025. Here a short explainer: We want to restore images (i.e., solve inverse problems) using pretrained velocity fields from flow matching. However, using change of variables is super costly.

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Have some curiosity on investigating the well-known PCA (Principal Component Analysis) with a glimpse of sparse optimization? With homogeneous or scale-invariant SOOT/SPOQ norm ratio penalties? Join INRIA for a Master Internship in 2025 (INRIA) Revisiting PCA with norm-ratio sparsity penalties

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