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Optimal Transport (OT) is a mathematical framework that first emerged in the eighteenth century and has led to a plethora of methods for answering many theoretical and applied questions. The last decade has been a witness to the remarkable…

机器学习 · 计算机科学 2024-03-25 Abdelwahed Khamis , Russell Tsuchida , Mohamed Tarek , Vivien Rolland , Lars Petersson

Optimal transport (OT) is a powerful geometric and probabilistic tool for finding correspondences and measuring similarity between two distributions. Yet, its original formulation relies on the existence of a cost function between the…

机器学习 · 统计学 2020-11-09 Ievgen Redko , Titouan Vayer , Rémi Flamary , Nicolas Courty

Computing optimal transport (OT) for general high-dimensional data has been a long-standing challenge. Despite much progress, most of the efforts including neural network methods have been focused on the static formulation of the OT…

机器学习 · 统计学 2025-03-12 Chen Xu , Xiuyuan Cheng , Yao Xie

This paper studies the convergence rates of optimal transport (OT) map estimators, a topic of growing interest in statistics, machine learning, and various scientific fields. Despite recent advancements, existing results rely on regularity…

统计理论 · 数学 2024-12-12 Yizhe Ding , Runze Li , Lingzhou Xue

Optimal Transport is a popular distance metric for measuring similarity between distributions. Exact algorithms for computing Optimal Transport can be slow, which has motivated the development of approximate numerical solvers (e.g. Sinkhorn…

机器学习 · 计算机科学 2022-03-09 Nathaniel Lahn , Sharath Raghvendra , Kaiyi Zhang

An efficient method for computing solutions to the Optimal Transportation (OT) problem with a wide class of cost functions is presented. The standard linear programming (LP) discretization of the continuous problem becomes intractible for…

数值分析 · 数学 2015-09-15 Adam M. Oberman , Yuanlong Ruan

Distributional data have become increasingly prominent in modern signal processing, highlighting the necessity of computing optimal transport (OT) maps across multiple probability distributions. Nevertheless, recent studies on neural OT…

机器学习 · 计算机科学 2025-04-25 Mingchen Jiang , Peng Xu , Xichen Ye , Xiaohui Chen , Yun Yang , Yifan Chen

We study the complexity of approximating the multimarginal optimal transport (MOT) distance, a generalization of the classical optimal transport distance, considered here between $m$ discrete probability distributions supported each on $n$…

机器学习 · 统计学 2022-02-23 Tianyi Lin , Nhat Ho , Marco Cuturi , Michael I. Jordan

We provide theoretical analyses for two algorithms that solve the regularized optimal transport (OT) problem between two discrete probability measures with at most $n$ atoms. We show that a greedy variant of the classical Sinkhorn…

数据结构与算法 · 计算机科学 2021-07-27 Tianyi Lin , Nhat Ho , Michael I. Jordan

In this work, we develop a collection of novel methods for the entropic-regularised optimal transport problem, which are inspired by existing mirror descent interpretations of the Sinkhorn algorithm used for solving this problem. These are…

最优化与控制 · 数学 2025-07-17 Vishwak Srinivasan , Qijia Jiang

We propose novel fast algorithms for optimal transport (OT) utilizing a cyclic symmetry structure of input data. Such OT with cyclic symmetry appears universally in various real-world examples: image processing, urban planning, and graph…

机器学习 · 计算机科学 2023-11-23 Shoichiro Takeda , Yasunori Akagi , Naoki Marumo , Kenta Niwa

Optimal transport (OT) theory has been been used in machine learning to study and characterize maps that can push-forward efficiently a probability measure onto another. Recent works have drawn inspiration from Brenier's theorem, which…

机器学习 · 计算机科学 2023-02-13 Théo Uscidda , Marco Cuturi

Sinkhorn algorithm has been used pervasively to approximate the solution to optimal transport (OT) and unbalanced optimal transport (UOT) problems. However, its practical application is limited due to the high computational complexity. To…

机器学习 · 统计学 2026-04-07 Mengyu Li , Jun Yu , Tao Li , Cheng Meng

Adapted optimal transport (AOT) problems are optimal transport problems for distributions of a time series where couplings are constrained to have a temporal causal structure. In this paper, we develop computational tools for solving AOT…

概率论 · 数学 2023-04-26 Stephan Eckstein , Gudmund Pammer

We propose a new regularized optimal transport (OT) formulation, termed sliced-regularized optimal transport (SROT). Unlike entropic OT (EOT), which regularizes the transport plan toward an independent coupling, SROT regularizes it toward a…

机器学习 · 统计学 2026-05-21 Khai Nguyen

The optimal transport (OT) problem aims to find the most efficient mapping between two probability distributions under a given cost function, and has diverse applications in many fields such as machine learning, computer vision and computer…

计算机视觉与模式识别 · 计算机科学 2025-11-04 Yan Bin Ng , Xianfeng Gu

Optimal transport aims to estimate a transportation plan that minimizes a displacement cost. This is realized by optimizing the scalar product between the sought plan and the given cost, over the space of doubly stochastic matrices. When…

Inverse Reinforcement Learning (IRL) aims to recover a reward function from expert demonstrations. Recently, Optimal Transport (OT) methods have been successfully deployed to align trajectories and infer rewards. While OT-based methods have…

机器学习 · 计算机科学 2025-06-10 Zixuan Dong , Yumi Omori , Keith Ross

Optimal Transport (OT) based distances are powerful tools for machine learning to compare probability measures and manipulate them using OT maps. In this field, a setting of interest is semi-discrete OT, where the source measure $\mu$ is…

The mismatch capacity characterizes the highest information rate of the channel under a prescribed decoding metric and serves as a critical performance indicator in numerous practical communication scenarios. Compared to the commonly used…

信息论 · 计算机科学 2025-07-29 Shitong Wu , Wenhao Ye , Xinwei Li , Lingyi Chen , Wenyi Zhang , Huihui Wu , Hao Wu