A Swiss Army Knife for Minimax Optimal Transport - Archive ouverte HAL
Communication Dans Un Congrès Année : 2020

A Swiss Army Knife for Minimax Optimal Transport

Sofien Dhouib
Ievgen Redko
Tanguy Kerdoncuff
Rémi Emonet
Marc Sebban

Résumé

The Optimal transport (OT) problem and its associated Wasserstein distance have recently become a topic of great interest in the machine learning community. However, its underlying optimization problem is known to have two major restrictions: (i) it strongly depends on the choice of the cost function and (ii) its sample complexity scales exponentially with the dimension. In this paper, we propose a general formulation of a minimax OT problem that can tackle these limitations by jointly optimizing the cost matrix and the transport plan, allowing us to define a robust distance between distributions. We propose to use a cutting-set method to solve this general problem and show its links and advantages compared to other existing minimax OT approaches. Additionally, we use this method to define a notion of stability allowing us to select the ground metric robust to bounded perturbations. Finally, we provide an experimental study highlighting the efficiency of our approach.
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Dates et versions

hal-02900712 , version 1 (16-07-2020)

Identifiants

  • HAL Id : hal-02900712 , version 1

Citer

Sofien Dhouib, Ievgen Redko, Tanguy Kerdoncuff, Rémi Emonet, Marc Sebban. A Swiss Army Knife for Minimax Optimal Transport. Thirty-seventh International Conference on Machine Learning, Jul 2020, Vienne, Austria. ⟨hal-02900712⟩
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