Search Results for author: Hugo Richard

Found 9 papers, 5 papers with code

Constant or logarithmic regret in asynchronous multiplayer bandits

no code implementations31 May 2023 Hugo Richard, Etienne Boursier, Vianney Perchet

This motivates the harder, asynchronous multiplayer bandits problem, which was first tackled with an explore-then-commit (ETC) algorithm (see Dakdouk, 2022), with a regret upper-bound in $\mathcal{O}(T^{\frac{2}{3}})$.

On Preemption and Learning in Stochastic Scheduling

1 code implementation31 May 2022 Nadav Merlis, Hugo Richard, Flore Sentenac, Corentin Odic, Mathieu Molina, Vianney Perchet

We study single-machine scheduling of jobs, each belonging to a job type that determines its duration distribution.

Efficient Exploration Scheduling

Shared Independent Component Analysis for Multi-Subject Neuroimaging

1 code implementation NeurIPS 2021 Hugo Richard, Pierre Ablin, Bertrand Thirion, Alexandre Gramfort, Aapo Hyvärinen

While ShICA-J is based on second-order statistics, we further propose to leverage non-Gaussianity of the components using a maximum-likelihood method, ShICA-ML, that is both more accurate and more costly.

MULTI-VIEW LEARNING

Functional Magnetic Resonance Imaging data augmentation through conditional ICA

2 code implementations11 Jul 2021 Badr Tajini, Hugo Richard, Bertrand Thirion

Advances in computational cognitive neuroimaging research are related to the availability of large amounts of labeled brain imaging data, but such data are scarce and expensive to generate.

Brain Decoding Data Augmentation

Adaptive Multi-View ICA: Estimation of noise levels for optimal inference

no code implementations22 Feb 2021 Hugo Richard, Pierre Ablin, Aapo Hyvärinen, Alexandre Gramfort, Bertrand Thirion

By contrast, we propose Adaptive multiView ICA (AVICA), a noisy ICA model where each view is a linear mixture of shared independent sources with additive noise on the sources.

MULTI-VIEW LEARNING

Modeling Shared Responses in Neuroimaging Studies through MultiView ICA

1 code implementation NeurIPS 2020 Hugo Richard, Luigi Gresele, Aapo Hyvärinen, Bertrand Thirion, Alexandre Gramfort, Pierre Ablin

Group studies involving large cohorts of subjects are important to draw general conclusions about brain functional organization.

Anatomy

mvlearn: Multiview Machine Learning in Python

no code implementations25 May 2020 Ronan Perry, Gavin Mischler, Richard Guo, Theodore Lee, Alexander Chang, Arman Koul, Cameron Franz, Hugo Richard, Iain Carmichael, Pierre Ablin, Alexandre Gramfort, Joshua T. Vogelstein

As data are generated more and more from multiple disparate sources, multiview data sets, where each sample has features in distinct views, have ballooned in recent years.

BIG-bench Machine Learning

Fast shared response model for fMRI data

2 code implementations27 Sep 2019 Hugo Richard, Lucas Martin, Ana Luısa Pinho, Jonathan Pillow, Bertrand Thirion

The shared response model provides a simple but effective framework to analyse fMRI data of subjects exposed to naturalistic stimuli.

Optimizing deep video representation to match brain activity

no code implementations7 Sep 2018 Hugo Richard, Ana Pinho, Bertrand Thirion, Guillaume Charpiat

The comparison of observed brain activity with the statistics generated by artificial intelligence systems is useful to probe brain functional organization under ecological conditions.

Optical Flow Estimation

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