A swiss army knife for minimax optimal transport

S Dhouib, I Redko, T Kerdoncuff… - International …, 2020 - proceedings.mlr.press
International Conference on Machine Learning, 2020proceedings.mlr.press
The Optimal transport (OT) problem and its associated Wasserstein distance have recently
become a topic of great interest in the machine learning community. However, the
underlying optimization problem is known to have two major restrictions:(i) it largely
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 restrictions by jointly optimizing the cost matrix …
Abstract
The Optimal transport (OT) problem and its associated Wasserstein distance have recently become a topic of great interest in the machine learning community. However, the underlying optimization problem is known to have two major restrictions:(i) it largely 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 restrictions 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 most robust cost matrix. Finally, we provide an experimental study highlighting the efficiency of our approach.
proceedings.mlr.press
以上显示的是最相近的搜索结果。 查看全部搜索结果