All past S³ seminars

2025

2024

Large-scale causal structure learning: challenges and new methods

Shuyu Dong (Université Paris-Saclay and INRIA Saclay)
November 29, 2024 — 11:00 — Location: new L2S location (IBM building), Room Bur 2.1 (Second floor)

Optimal transport for linear inverse problems: spectral estimation and system identification.

Filip Elvander (Aalto University)
November 07, 2024 — 10:00 — Location: new L2S location (IBM building), 3rd floor, Salle G. Hopper

Convergent plug-and-play methods for image inverse problems.

Samuel Hurault (ENS Paris)
October 18, 2024 — 11:00 — Location: new L2S location (IBM building), 3rd floor room

Radiative-Transfer-based Optical Tomography with Microscope – Modeling and Imaging

Yu Zhong (Founder & CTO, FINIAC Pte. Ltd., Singapore & Adjunct Associate Professor, Dept. of Physics and Technology, UiT, the Arctic University of Norway, Norway.)
September 27, 2024 — 11:00 — Location: new L2S location (IBM building), 3rd floor room

Hyperspectral data fusion and source separation for X-ray astrophysics

Julia Lascar (CEA Paris Saclay)
June 07, 2024 — 11:00 — Location: new L2S location (IBM building), 3rd floor room

Extremal approximations in the bandlimit and the Rayleigh criterion for super-resolution

Maxime Ferreira Da Costa (L2S, Centralesupelec)
April 26, 2024 — 11:00 — Location: new L2S location (IBM building), 3rd floor room

Surrogate Modeling for Stochastic Simulators: An Overview and Recent Developments

Xujia Zhu (CentraleSupélec, L2S)
March 08, 2024 — 11:00 — Location: new L2S location (IBM building), 3rd floor room

Leveraging data-driven low-dimensional signal representations to solve inverse problems

Ricardo Borsoi (CNRS, CRAN Laboratory, Nancy)
March 01, 2024 — 11:00 — Location: new L2S location (IBM building), 3rd floor room

Self-supervised learning for geospatial data

Claire Monteleoni (Inria Paris and University of Colorado Boulder)
January 26, 2024 — 11:00 — Location: new L2S location (IBM building), 3rd floor room

2023

Signal reconstruction using determinantal sampling

Ayoub Belhadji (Univ Lyon, ENS de Lyon, Inria, CNRS, UCBL, LIP UMR 5668)
December 07, 2023 — 14:00 — Location: new L2S location (IBM building), 3rd floor room

Physical and statistical challenges to model and simulate climate extremes

Pascal Yiou (CEA, Saclay)
December 01, 2023 — 11:00 — Location: new L2S location (IBM building), 5th floor room

Riemannian geometry for statistical estimation and learning: applications to remote sensing and M/EEG data analysis

Antoine Collas (MIND team, Inria Saclay)
November 24, 2023 — 11:00 — Location: new L2S location (IBM building), 3rd floor room

Reconstruction of piecewise constant images via total (gradient) variation regularization

Romain Petit (University of Genoa, Italy)
November 16, 2023 — 11:00 — Location: new L2S location (IBM building), room to be announced

Sparse coding methods applied to DNA replication analysis

Clara Lage (ENS de Lyon, Physics laboratory)
October 13, 2023 — 11:00 — Location: Salle des séminaires du L2S

Products of random matrices

Roger Van Peski (KTH)
September 15, 2023 — 11:00 — Location: Salle des séminaires du L2S

Contrastive Learning in Medical Imaging - A metric learning approach

Pietro Gori (Téléom Paris, France)
June 30, 2023 — 11:00 — Location: Salle des séminaires du L2S

Graph signal processing for the study of multivariate physiological signals

Laurent Oudre (Centre Borelli, ENS Paris Saclay)
May 26, 2023 — 11:45 — Location: Amphitéâtre Peugeot - Bâtiment Bouygues

Time series, principal component analysis and logistic regression: An application to the association between annoyance and air pollution

Milena Machado (Federal Institute of Science and Technology of Espírito Santo, Brazil - IFES)
March 16, 2023 — 10:00 — Location: Salle des séminaires du L2S

Recent advances in robust mean estimation in high dimensions

Arshak Minasyan (CREST-ENSAE, IP Paris)
March 08, 2023 — 14:00 — Location: Salle des séminaires du L2S and online

A Robust algorithm for radio interferometric imaging

Yassine Mhiri (L2S, SATIE)
February 09, 2023 — 10:00 — Location: Salle du conseil du L2S

Automatic methods for sparse blind source separation

Christophe Kervazo (LTCI, Télécom Paris, Institut Polytechnique de Paris)
January 27, 2023 — 14:00 — Location: Salle des séminaire du L2S

2022

Matrix-wise L0-constrained Sparse Nonnegative Least Squares

Nicolas Nadisic (Universiteit Gent, Belgium)
December 02, 2022 — 14:00 — Location: Online

Deep learning solutions to estimation and detection

Ami Wiesel (Hebrew University of Jerusalem)
October 17, 2022 — 14:00 — Location: Salle des séminaires du L2S and online

Towards GNSS High Precision Navigation: Manifolds and Robust Statistics

Daniel Medina (Institute of Communications and Navigation, German Aerospace Center (DLR))
July 12, 2022 — 11:00 — Location: Online

Probabilistic PCA for heterogeneous-quality data

David Hong (Department of Statistics and Data Science, University of Pennsylvania, Philadelphia, PA, US)
May 12, 2022 — 15:00 — Location: Online

An optimal exoplanet detection criterion

Nathan Hara (Université de Genève)
April 22, 2022 — 11:00 — Location: Online

The statistics of Discrete Determinantal Point Processes

Victor-Emmanuel Brunel (ENSAE-CREST)
April 08, 2022 — 11:00 — Location: Salle des séminaires du L2S

Multimodal data fusion by tensor low-rank approximations - applications in remote sensing

Clémence Prévost (CRIStAL - Univ. Lille, CNRS, Centrale Lille)
February 11, 2022 — 11:00 — Location: Online

2021

A sufficient condition for convergence of Mean Shift algorithm in any dimension, with radially symmetric, strictly positive definite kernels

Susovan Pal (EPITA)
December 10, 2021 — 11:00 — Location: Online

Robust low-rank covariance matrix estimation with missing values and application to classification problems

Alexandre Hippert-Ferrer (L2S, CentraleSupelec, Université Paris Saclay)
September 24, 2021 — 11:00 — Location: Online

Regularization via deep generative models: an analysis point of view

Thomas Oberlin (ISAE-SUPAERO, ANITI, IRIT)
June 25, 2021 — 11:00 — Location: Online

Online estimation of elliptical distributions and their mixture: The component-wise information gradient method

Jialun Zhou (IMS, Groupe Signal Image — CNRS, Université de Bordeaux)
May 21, 2021 — 11:00 —

Global optimization for l0-norm-based sparse solutions to least squares problems

Sébastien Bourguignon (École Centrale de Nantes, LS2N, SIMS team)
April 09, 2021 — 11:00 — Location: Online

Speeding up of kernel-based learning for high-order tensor

Ouafae Karmouda (SIGMA team at CRIStAL laboratory, Lille)
March 12, 2021 — 11:00 — Location: Online

Sampling rates for l1 synthesis

Claire Boyer (Sorbonne Université)
March 05, 2021 — 11:00 — Location: Online

2020

Efficient MCMC sampling via asymptotically exact data augmentation

Maxime Vono (IRIT — INP-ENSEEIHT)
December 11, 2020 — 14:00 — Location: Online

Riemannian geometry for data analysis: illustration on blind source separation and low-rank structured covariance matrices

Florent Bouchard (L2S — CNRS, Université Paris-Saclay, CentraleSupélec)
November 27, 2020 — 11:00 — Location: Online

Contactless detection of cardiopulmonary activity for a person in different scenarios

Sarah Samad (IETR-INSA Rennes)
November 06, 2020 — 11:00 — Location: Online

Structured Sparsity Regularization for online MR Image Reconstruction in Accelerated T2* Imaging

Philippe Ciuciu (CEA/NeuroSpin & Inria Saclay Île-de-France Parietal)
October 09, 2020 — 11:00 — Location: Online

Robust Semiparametric Efficient Estimators in Complex Elliptically Symmetric Distributions

Stefano Fortunati (IPSA, Paris, France)
October 02, 2020 — 11:00 — Location: Online

Démélange spectral sur Mars

Frédéric Schmidt (Géosciences Paris-Saclay, Université Paris-Saclay)
September 25, 2020 — 11:00 — Location: Online

Mixed Integer Programming resolution techniques and applications to Sparse Approximation problems

Diego Delle Done (LIX, CNRS - École Polytechnique; L2S)
February 14, 2020 — 11:00 — Location: Salle des séminaires du L2S, C4.01

Semiparametric inference in elliptical distributions - lower bounds and efficient estimators.

Stefano Fortunati (L2S, CentraleSupélec)
January 31, 2020 — 11:00 — Location: Salle des séminaires du L2S, C4.01

6G - Super-connecting the connected and connecting the unconnected

Prof. Slim Alouini (King Abdullah University of Science and Technology)
January 31, 2020 — 11:00 — Location: D2.06, Breguet building, CentraleSupélec

2019

An overview of cointegration tests in the time and frequency domains

Igor Viveiros Melo Souza (Federal,University of Belo Horizonte, Brazil)
December 16, 2019 — 16:45 — Location: F3.05, Breguet building, CentraleSupélec

Vascular networks, from low-level vision to generative models

Hugues Talbot (CVN, CentraleSupélec, INRIA, Université Paris-Saclay)
November 27, 2019 — 11:00 — Location: Salle des séminaires du L2S

Computational characterization of supra-threshold hearing to understand speech-in-noise intelligibility deficits

Emmanuel Ponsot (Laboratoire des Systèmes Perceptifs, ENS)
November 20, 2019 — 11:00 — Location: Salle des séminaires du L2S

Test d'hypothèses bayésien non paramétrique et application à la modélisation de la zone du langage

Diarra Fall (Institut Denis Poisson, UMR CNRS, Université d’Orléans et de Tours)
October 18, 2019 — 11:00 — Location: Salle des séminaires du L2S

Safe squeezing for antisparse coding

Clément Elvira (PANAMA research group, Iniria, CNRS, IRISA - Rennes)
October 04, 2019 — 14:00 — Location: None

Segmentation-déconvolution d'images texturées - gestion des incertitudes par une approche bayésienne hiérarchique et un échantillonnage stochastique

Jean-François Giovannelli (Prof. à l’université de Bordeaux (IMS Lab))
July 09, 2019 — 16:30 — Location: Amphitéatre Janet (bât. Breguet)

Advances in data processing and machine learning in camera networks

Hichem Snoussi (Prof. à l’université de technologique de Troyes)
July 09, 2019 — 15:30 — Location: Amphitéatre Janet (bât. Breguet)

A Bayesian deep learning approach in thermal remote imaging with hyper-resolution

Ning Chu (Institute of process equipment, College of Energy Engineering, Zhejiang University (Hangzhou, China))
July 09, 2019 — 10:30 — Location: Salle du conseil du L2S

Décrypter le langage sonore des animaux - De la technologie du signal vers l'éthologie animale et l'éthologie homme animal

Fabienne Delfour et Pascal Betremieux (LEEC Paris 13 et Dolhom)
June 14, 2019 — 11:00 — Location: Salle du conseil du L2S

Distributed Active and Passive MIMO Radar

Braham Himed (Air Force Research Laboratory, Sensors Directorate, RF Technology Branch, Dayton, Ohio)
June 12, 2019 — 14:00 — Location: Amphitéatre Janet (bât. Bréguet)

2018

Bilevel optimisation approaches for learning the optimal noise model in mixed and non-standard image denoising applications

Luca Calatroni (CMAP, École Polytechnique)
December 04, 2018 — 10:30 — Location: Salle du conseil du L2S

A dual certificates analysis of compressive off-the-grid recovery

Nicolas Keriven (Ecole Normale Supérieure)
October 05, 2018 — 10:30 — Location: Salle du conseil du L2S

A new fast and robust bootstrap method for statistical inference in ICA using the FastICA

Shahab Basiri (Department of Signal Processing and Acoustics, Aalto University, Finland)
June 01, 2018 — 14:30 — Location: Salle des séminaires du L2S (C4.01)

Groupwise registration of cardiac perfusion MRI sequences using mutual information in high dimension

Sameh Hamrouni (GE Healthcare)
May 16, 2018 — 10:30 — Location: Salle du conseil du L2S

Divergent-beam backprojection-filtration formula with applications to region-of-interest imaging

Aymeric Reshef (GE Healthcare)
May 16, 2018 — 10:30 — Location: Salle du conseil du L2S

AI4SAR- Artificial Intelligence for Synthetic Aperture Radar

Mihai Datcu (Remote Sensing Technology Institute (IMF), German Aerospace Center (DLR), University Politechnica Bucharest (UPB))
May 04, 2018 — 11:00 — Location: Salle du conseil du L2S

Décomposition spectroscopique en imagerie multispectrale

Vincent Mazet and Hassan Mortada (ICube / équipe IMAGeS / groupe IPSEO, Université de Strasbourg)
April 06, 2018 — 10:30 — Location: Salle du conseil du L2S

Chauves-souris, écholocation et neuroscience computationnelle - que nous disent les bornes de Cramer-Rao ?

Didier Mauuary (BLUEBAT)
March 09, 2018 — 10:30 — Location: Salle du conseil du L2S

An application of the GAM-PCA-VAR model to respiratory disease and air pollution data

Valderio Reisen and Marton Ispany ()
January 26, 2018 — 10:30 — Location: Salle du conseil du L2S

Analyse des performances en estimation paramétrique à l'aide des bornes inférieures de l'erreur quadratique moyenne

Alexandre Renaux (L2S, Université Paris Sud)
January 12, 2018 — 10:30 — Location: Salle du conseil du L2S

2017

Fourier transforms of polytopes and their role in Number Theory and Combinatorics

Sinai Robins (University of Sao Paulo, Sao Paulo, Brasil and Brown University, Providence, USA)
December 21, 2017 — 11:15 — Location: Salle du conseil du L2S

On the polynomial part of a restricted partition function

Karl Dilcher (Dalhousie University, Halifax, Canada)
December 21, 2017 — 10:30 — Location: Salle du conseil du L2S

Non-negative orthogonal greedy algorithms for sparse approximation

Thanh T. Nguyen (CRAN, L2S)
December 08, 2017 — 10:30 — Location: None

A Random Block-Coordinate Douglas-Rachford Splitting Method with Low Computational Complexity for Binary Logistic Regression

Émilie Chouzenoux (CVN, CentraleSupélec/INRIA, Université Paris-Est Marne-La-Vallée)
November 24, 2017 — 14:00 — Location: Salle du conseil du L2S

Estimation de l’intensité d’un processus de comptage en grande dimensionessus de comptage en grande dimension

Sarah Lemler (MICS, CentraleSupélec, Gif)
November 17, 2017 — 14:00 — Location: Salle du conseil du L2S

Differential Geometry for Statistical and Entropy-Based Inference

Jun Zhang (Department of Psychology and Department of Mathematics, University of Michigan-Ann Arbor)
November 03, 2017 — 10:30 — Location: Salle du conseil du L2S

Big Data in the Social Sciences- Statistical methods for multi-source high-dimensional data

Katrijn Van Deun (Tilburg University, the Netherlands)
October 06, 2017 — 10:00 — Location: Salle du conseil du L2S

Inversion de données en traitement du signal et des images - régularisation parcimonieuse et algorithmes de minimisation L0

Charles Soussen (Centre de Recherche en Automatique de Nancy (CRAN, UMR CNRS 7039), Université de Lorraine)
May 23, 2017 — 14:00 — Location: Salle du conseil du L2S

Deux trous noirs dans une meule de foin - analyse de données pour l'astronomie gravitationnelle

Eric Chassande-Mottin (CNRS, AstroParticule et Cosmologie, Université Paris Diderot)
May 19, 2017 — 10:30 — Location: Salle des séminaires du L2S (C4.01)

Extending Stationarity to Graph Signal Processing- a Model for Stochastic Graph Signals

Benjamin Girault (University of Southern California)
March 31, 2017 — 10:30 — Location: Salle du conseil du L2S

Novel Algorithms for Automated Diagnosis of Neurological and Psychiatric Disorders.

Hojjat ADELI (The Ohio State University, Columbus, USA)
March 28, 2017 — 10:30 — Location: Salle du conseil du L2S

Stochastic proximal algorithms with applications to online image recovery

Jean-Christophe Pesquet (CVN, Centralesupélec)
March 24, 2017 — 11:00 — Location: Salle du conseil du L2S

On Electromagnetic Modeling and Imaging of Defects in Periodic Fibered Laminates.

Zicheng LIU (Inverse problems Group, Signals and Statistics Division, L2S Laboratory)
March 10, 2017 — 11:15 — Location: Salle du conseil du L2S

On Imaging Methods of Material Structures with Different Boundary Conditions.

Xiuzhu YE (Beihang University, Beijing, China)
March 10, 2017 — 10:30 — Location: Salle du conseil du L2S

An alternative estimator for the number of factors for high-dimensional time series. A robust approach.

Valderio Reisen (Federal University of Espı́rito Santo, Brazil)
February 27, 2017 — 10:30 — Location: Salle du conseil du L2S

FastText- A library for efficient learning of word representations and sentence classification.

Piotr Bojanowski (Facebook AI Research)
February 24, 2017 — 10:30 — Location: Salle du conseil du L2S

Stochastic Quasi-Newton Langevin Monte Carlo

Umut Şimşekli (LTCI, Télécom ParisTech)
February 10, 2017 — 10:30 — Location: Salle du conseil du L2S

Detecting confounding in multivariate linear models via spectral analysis

Dominik Janzing (Max Planck Institute for Intelligent Systems)
January 31, 2017 — 10:30 — Location: Salle du conseil du L2S

Adapting to unknown noise level in super-resolution

Claire Boyer (LSTA, UPMC)
January 27, 2017 — 10:30 —

Inverse problems for speech production

Benjamin Elie (LORIA et IADI)
January 27, 2017 — 10:30 — Location: Salle du conseil du L2S

2016

The method of brackets (MOB) and integrating by differentiating (IBD)

Lin Jiu (RISC, Linz)
December 09, 2016 — 10:30 — Location: Salle du conseil du L2S

High dimensional sampling with the Unadjusted Langevin Algorithm

Alain Durmus (LTCI, Telecom ParisTech)
November 23, 2016 — 10:30 — Location: Salle du conseil du L2S

Algorithmes d’estimation et de détection en contexte hétérogène rang faible

Arnaud Breloy (Université Paris-Nanterre, FR)
November 06, 2016 — 10:30 — Location: None

Material-by-Design for Synthesis, Modeling, and Simulation of Innovative Systems and Devices

Giacomo Oliveri (ELEDIA, University of Trento)
September 30, 2016 — 10:30 — Location: Salle du conseil du L2S

Sound field recording and reproduction and its extension to super-resolution

Shoichi Koyama (University of Tokyo)
June 03, 2016 — 10:30 — Location: Salle des séminaires du L2S (C4.01)

Condition monitoring using vibration signals

Asoke K. Nandi (Brunel University London, UK)
May 24, 2016 — 10:30 — Location: Salle des séminaires du L2S (C4.01)

Time Frequency Array Signal Processing- Multi-Dimensional processing for non-stationary signals

Adel Belouchrani (Ecole Nationale Polytechnique, Alger)
May 20, 2016 — 10:30 — Location: Salle du conseil du L2S

Topological Pattern Selection in Recurrent Networks

Alireza Bahraini (Sharif University)
April 01, 2016 — 10:30 — Location: Salle du conseil du L2S

Solving large-scale inverse problems using forward-backward based methods

Audrey Repetti (Heriot-Watt university, Edinburgh)
March 11, 2016 — 10:30 — Location: Salle du conseil du L2S

Data-driven, Interactive Scientific Articles in a Collaborative Environment with Authorea

Nathan Jenkins (Authorea)
March 04, 2016 — 10:30 — Location: Salle du conseil du L2S

Robust spectral estimators for long-memory processes- Time and frequency domain approaches

Valdério Anselmo Reisen (DEST-PPGEA-PPGECON-UFES, ES-Brazil)
January 29, 2016 — 10:30 — Location: Salle des séminaires du L2S (C4.01)

A Two-Round Interactive Receiver Cooperation Scheme for Multicast Channels

Victor Exposito (CentraleSupelec L2S, Gif-sur-Yvette, Mitsubishi R&DCentre Europe, Rennes, France)
January 15, 2016 — 10:30 — Location: Salle des séminaires du L2S (C4.01)

2015

Gegenbauer polynomials and positive definiteness

Christian Berg (University of Copenhagen, Denmark)
November 27, 2015 — 10:30 — Location: None

Bayesian Fusion of Multiple Images - Beyond Pansharpening

Jean-Yves Tourneret (Université de Toulouse, FR)
November 13, 2015 — 10:30 — Location: None

Bayesian Tomography

John Skilling (Maximum Entropy Data Consultants Ltd, UK)
September 25, 2015 — 10:30 — Location: None

Is the Gaussian distribution

Ercan E. Kuruoglu (Istituto di Scienza e Tecnologie dell’Informazione, Italy)
September 18, 2015 — 10:30 — Location: None

The method of brackets

Victor H. Moll (Departement of Mathematics, Tulane University, New Orleans, USA)
July 03, 2015 — 10:30 — Location: None

Un modèle stochastique de la transcription d’un gène

Marc R. Roussel (University of Lethbridge, Alberta, Canada)
June 26, 2015 — 10:30 — Location: None

High dimensional minimum risk portfolio optimization

Liusha Yang (Department of Electronic and Computer Engineering, Hong Kong University of Science and Technology)
June 26, 2015 — 10:30 — Location: None

Stability of continuous-time quantum filters

Nina H. Amini (CNRS, Laboratoire des Signaux et Systèmes, France)
June 19, 2015 — 10:30 — Location: None

Bayesian Cyclic Networks, Mutual Information and Reduced-Order Bayesian Inference

Robert Niven (University of New South Wales, Canberra, Australia)
June 17, 2015 — 10:30 — Location: None

Modeling and mismodeling in radar applications- parameter estimation and bounds

Maria S. Greco (Department of Information Engineering, University of Pisa, Italy)
June 09, 2015 — 10:30 — Location: None

The NRL multi-aperture SAR- system description and recent results

Luke Rosenberg (DSTO, Australia)
May 26, 2015 — 10:30 — Location: None

Working memory in random neural networks

Gilles Wainrib (Ecole Normale Supérieure, Computer Science Department, FR)
April 03, 2015 — 10:30 — Location: None

Inverse problems in signal and image processing and Bayesian inference framework- from basic to advanced Bayesian computation

Ali Mohammad-Djafari (CNRS, L2S, FR)
March 27, 2015 — 10:30 — Location: None

A new covariance function for spatio-temporal data analysis with application to atmospheric pollution and sensor networking

György Terdik (University of Debrecen, Hungary)
January 30, 2015 — 10:30 — Location: None

Correlation mining in high dimension with limited samples

Alfred Hero (University of Michigan, Ann Arbor, MI, USA)
January 30, 2015 — 10:30 — Location: None