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Optimal transport distances are powerful tools to compare probability distributions and have found many applications in machine learning. Yet their algorithmic complexity prevents their direct use on large scale datasets. To overcome this…

机器学习 · 统计学 2021-10-14 Kilian Fatras , Younes Zine , Rémi Flamary , Rémi Gribonval , Nicolas Courty

We propose a new unsupervised anomaly detection method based on the sliced-Wasserstein distance for training data selection in machine learning approaches. Our filtering technique is interesting for decision-making pipelines deploying…

机器学习 · 计算机科学 2025-04-18 Julien Pallage , Antoine Lesage-Landry

The sliced Wasserstein (SW) distance has been widely recognized as a statistically effective and computationally efficient metric between two probability measures. A key component of the SW distance is the slicing distribution. There are…

机器学习 · 统计学 2024-01-02 Khai Nguyen , Nhat Ho

Optimal Transport has sparked vivid interest in recent years, in particular thanks to the Wasserstein distance, which provides a geometrically sensible and intuitive way of comparing probability measures. For computational reasons, the…

机器学习 · 计算机科学 2024-03-19 Eloi Tanguy

We propose a new minimum-distance estimator for linear random coefficient models. This estimator integrates the recently advanced sliced Wasserstein distance with the nearest neighbor methods, both of which enhance computational efficiency.…

统计理论 · 数学 2025-04-25 Keunwoo Lim , Ting Ye , Fang Han

In this paper, we investigate the properties of the Sliced Wasserstein Distance (SW) when employed as an objective functional. The SW metric has gained significant interest in the optimal transport and machine learning literature, due to…

机器学习 · 统计学 2025-08-21 Christophe Vauthier , Anna Korba , Quentin Mérigot

Tree-Sliced methods have recently emerged as an alternative to the traditional Sliced Wasserstein (SW) distance, replacing one-dimensional lines with tree-based metric spaces and incorporating a splitting mechanism for projecting measures.…

机器学习 · 计算机科学 2025-06-10 Thanh Tran , Viet-Hoang Tran , Thanh Chu , Trang Pham , Laurent El Ghaoui , Tam Le , Tan M. Nguyen

Optimal transport distances, otherwise known as Wasserstein distances, have recently drawn ample attention in computer vision and machine learning as a powerful discrepancy measure for probability distributions. The recent developments on…

机器学习 · 计算机科学 2015-11-11 Soheil Kolouri , Yang Zou , Gustavo K. Rohde

The Sliced-Wasserstein distance (SW) is being increasingly used in machine learning applications as an alternative to the Wasserstein distance and offers significant computational and statistical benefits. Since it is defined as an…

机器学习 · 统计学 2022-01-05 Kimia Nadjahi , Alain Durmus , Pierre E. Jacob , Roland Badeau , Umut Şimşekli

Optimization is a ubiquitous modeling tool and is often deployed in settings which repeatedly solve similar instances of the same problem. Amortized optimization methods use learning to predict the solutions to problems in these settings,…

机器学习 · 计算机科学 2025-10-07 Brandon Amos

Recently used in various machine learning contexts, the Gromov-Wasserstein distance (GW) allows for comparing distributions whose supports do not necessarily lie in the same metric space. However, this Optimal Transport (OT) distance…

机器学习 · 统计学 2022-10-21 Titouan Vayer , Rémi Flamary , Romain Tavenard , Laetitia Chapel , Nicolas Courty

Distributionally-robust optimization is often studied for a fixed set of distributions rather than time-varying distributions that can drift significantly over time (which is, for instance, the case in finance and sociology due to…

最优化与控制 · 数学 2020-10-01 Iman Shames , Farhad Farokhi

Wasserstein distance (WD) and the associated optimal transport plan have been proven useful in many applications where probability measures are at stake. In this paper, we propose a new proxy of the squared WD, coined min-SWGG, that is…

机器学习 · 统计学 2023-10-31 Guillaume Mahey , Laetitia Chapel , Gilles Gasso , Clément Bonet , Nicolas Courty

Optimal Transport (OT) metrics allow for defining discrepancies between two probability measures. Wasserstein distance is for longer the celebrated OT-distance frequently-used in the literature, which seeks probability distributions to be…

机器学习 · 计算机科学 2021-10-14 Mokhtar Z. Alaya , Gilles Gasso , Maxime Berar , Alain Rakotomamonjy

Incorporating a deep generative model as the prior distribution in inverse problems has established substantial success in reconstructing images from corrupted observations. Notwithstanding, the existing optimization approaches use gradient…

机器学习 · 计算机科学 2023-01-31 Tianci Liu , Tong Yang , Quan Zhang , Qi Lei

Generalized sliced Wasserstein distance is a variant of sliced Wasserstein distance that exploits the power of non-linear projection through a given defining function to better capture the complex structures of the probability…

机器学习 · 统计学 2022-10-20 Dung Le , Huy Nguyen , Khai Nguyen , Trang Nguyen , Nhat Ho

We propose a new formulation and learning strategy for computing the Wasserstein geodesic between two probability distributions in high dimensions. By applying the method of Lagrange multipliers to the dynamic formulation of the optimal…

机器学习 · 计算机科学 2021-06-08 Shu Liu , Shaojun Ma , Yongxin Chen , Hongyuan Zha , Haomin Zhou

The practical applications of Wasserstein distances (WDs) are constrained by their sample and computational complexities. Sliced-Wasserstein distances (SWDs) provide a workaround by projecting distributions onto one-dimensional subspaces,…

机器学习 · 计算机科学 2024-11-19 Huy Tran , Yikun Bai , Ashkan Shahbazi , John R. Hershey , Soheil Kolouri

Gaussian mixture models (GMMs) are widely used in machine learning for tasks such as clustering, classification, image reconstruction, and generative modeling. A key challenge in working with GMMs is defining a computationally efficient and…

机器学习 · 计算机科学 2025-08-05 Moritz Piening , Robert Beinert

Spherical Sliced-Wasserstein (SSW) has recently been proposed to measure the discrepancy between spherical data distributions in various fields, such as geology, medical domains, computer vision, and deep representation learning. However,…

机器学习 · 计算机科学 2024-12-30 Hongliang Zhang , Shuo Chen , Lei Luo , Jian Yang