Search Results for author: Clément Bonet

Found 10 papers, 7 papers with code

Mirror and Preconditioned Gradient Descent in Wasserstein Space

1 code implementation13 Jun 2024 Clément Bonet, Théo Uscidda, Adam David, Pierre-Cyril Aubin-Frankowski, Anna Korba

As the problem of minimizing functionals on the Wasserstein space encompasses many applications in machine learning, different optimization algorithms on $\mathbb{R}^d$ have received their counterpart analog on the Wasserstein space.

Sliced-Wasserstein Distances and Flows on Cartan-Hadamard Manifolds

1 code implementation11 Mar 2024 Clément Bonet, Lucas Drumetz, Nicolas Courty

On Euclidean spaces, a popular alternative is the Sliced-Wasserstein distance, which leverages a closed-form solution of the Wasserstein distance in one dimension, but which is not readily available on manifolds.

Leveraging Optimal Transport via Projections on Subspaces for Machine Learning Applications

no code implementations23 Nov 2023 Clément Bonet

Back to the original Euclidean Sliced-Wasserstein distance between probability measures, we study the dynamic of gradient flows when endowing the space with this distance in place of the usual Wasserstein distance.

Fast Optimal Transport through Sliced Wasserstein Generalized Geodesics

1 code implementation4 Jul 2023 Guillaume Mahey, Laetitia Chapel, Gilles Gasso, Clément Bonet, Nicolas Courty

Wasserstein distance (WD) and the associated optimal transport plan have been proven useful in many applications where probability measures are at stake.

Colorization Image Colorization

Unbalanced Optimal Transport meets Sliced-Wasserstein

no code implementations12 Jun 2023 Thibault Séjourné, Clément Bonet, Kilian Fatras, Kimia Nadjahi, Nicolas Courty

In parallel, unbalanced OT was designed to allow comparisons of more general positive measures, while being more robust to outliers.

Sliced-Wasserstein on Symmetric Positive Definite Matrices for M/EEG Signals

2 code implementations10 Mar 2023 Clément Bonet, Benoît Malézieux, Alain Rakotomamonjy, Lucas Drumetz, Thomas Moreau, Matthieu Kowalski, Nicolas Courty

When dealing with electro or magnetoencephalography records, many supervised prediction tasks are solved by working with covariance matrices to summarize the signals.

Brain Computer Interface Computational Efficiency +4

Hyperbolic Sliced-Wasserstein via Geodesic and Horospherical Projections

1 code implementation18 Nov 2022 Clément Bonet, Laetitia Chapel, Lucas Drumetz, Nicolas Courty

It has been shown beneficial for many types of data which present an underlying hierarchical structure to be embedded in hyperbolic spaces.

Image Classification

Spherical Sliced-Wasserstein

1 code implementation17 Jun 2022 Clément Bonet, Paul Berg, Nicolas Courty, François Septier, Lucas Drumetz, Minh-Tan Pham

Many variants of the Wasserstein distance have been introduced to reduce its original computational burden.

Density Estimation Variational Inference

Subspace Detours Meet Gromov-Wasserstein

no code implementations21 Oct 2021 Clément Bonet, Nicolas Courty, François Septier, Lucas Drumetz

In the context of optimal transport methods, the subspace detour approach was recently presented by Muzellec and Cuturi (2019).

Efficient Gradient Flows in Sliced-Wasserstein Space

1 code implementation21 Oct 2021 Clément Bonet, Nicolas Courty, François Septier, Lucas Drumetz

However, it requires solving a nested optimization problem at each iteration, and is known for its computational challenges, especially in high dimension.

Bayesian Inference Image Generation

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