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In the context of few-shot classification, the goal is to train a classifier using a limited number of samples while maintaining satisfactory performance. However, traditional metric-based methods exhibit certain limitations in achieving…

计算机视觉与模式识别 · 计算机科学 2025-03-13 Fatemeh Askari , Amirreza Fateh , Mohammad Reza Mohammadi

Score Distillation Sampling (SDS) and its variants have been widely used for text-to-3D generation by distilling 2D image diffusion priors. However, the standard SDS objective is prone to severe mode collapse, frequently yielding…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Rohith Ramanan , A. N. Rajagopalan

Fourier Ptychographic Microscopy (FPM) is an imaging procedure that overcomes the traditional limit on Space-Bandwidth Product (SBP) of conventional microscopes through computational means. It utilizes multiple images captured using a low…

计算机视觉与模式识别 · 计算机科学 2022-08-17 Atreyee Saha , Salman S Khan , Sagar Sehrawat , Sanjana S Prabhu , Shanti Bhattacharya , Kaushik Mitra

Federated learning (FL) has emerged as a promising approach for collaborative medical image analysis, enabling multiple institutions to build robust predictive models while preserving sensitive patient data. In the context of Whole Slide…

图像与视频处理 · 电气工程与系统科学 2025-06-19 Haolong Jin , Shenglin Liu , Cong Cong , Qingmin Feng , Yongzhi Liu , Lina Huang , Yingzi Hu

Semantic watermarking techniques for latent diffusion models (LDMs) are robust against regeneration attacks, but often suffer from detection performance degradation due to the loss of frequency integrity. To tackle this problem, we propose…

计算机视觉与模式识别 · 计算机科学 2025-09-10 Sung Ju Lee , Nam Ik Cho

Dimension reduction techniques typically seek an embedding of a high-dimensional point cloud into a low-dimensional Euclidean space which optimally preserves the geometry of the input data. Based on expert knowledge, one may instead wish to…

最优化与控制 · 数学 2025-02-28 Ranthony A. Clark , Tom Needham , Thomas Weighill

Few-shot Semantic Segmentation (FSS) is a challenging task that utilizes limited support images to segment associated unseen objects in query images. However, recent FSS methods are observed to perform worse, when enlarging the number of…

计算机视觉与模式识别 · 计算机科学 2025-01-24 Wailing Tang , Biqi Yang , Pheng-Ann Heng , Yun-Hui Liu , Chi-Wing Fu

Despite their advantages, normalizing flows generally suffer from several shortcomings including their tendency to generate unrealistic data (e.g., images) and their failing to detect out-of-distribution data. One reason for these…

机器学习 · 统计学 2022-07-13 Florentin Coeurdoux , Nicolas Dobigeon , Pierre Chainais

Seeking informative projecting directions has been an important task in utilizing sliced Wasserstein distance in applications. However, finding these directions usually requires an iterative optimization procedure over the space of…

机器学习 · 统计学 2022-09-26 Khai Nguyen , Nhat Ho

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

We introduce Deep Set Linearized Optimal Transport, an algorithm designed for the efficient simultaneous embedding of point clouds into an $L^2-$space. This embedding preserves specific low-dimensional structures within the Wasserstein…

机器学习 · 计算机科学 2024-01-04 Scott Mahan , Caroline Moosmüller , Alexander Cloninger

This paper studies the optimization of the KL functional on the Wasserstein space of probability measures, and develops a sampling framework based on Wasserstein gradient descent (WGD). We identify two important subclasses of the…

统计计算 · 统计学 2026-02-04 Van Chien Ta , Thi Mai Hong Chu , Minh-Ngoc Tran

Sliced-Wasserstein Flow (SWF) is a promising approach to nonparametric generative modeling but has not been widely adopted due to its suboptimal generative quality and lack of conditional modeling capabilities. In this work, we make two…

机器学习 · 计算机科学 2023-07-26 Chao Du , Tianbo Li , Tianyu Pang , Shuicheng Yan , Min Lin

We propose a method for learning embeddings for few-shot learning that is suitable for use with any number of ways and any number of shots (shot-free). Rather than fixing the class prototypes to be the Euclidean average of sample…

机器学习 · 计算机科学 2020-04-23 Avinash Ravichandran , Rahul Bhotika , Stefano Soatto

Sliced Wasserstein (SW) distance suffers from redundant projections due to independent uniform random projecting directions. To partially overcome the issue, max K sliced Wasserstein (Max-K-SW) distance ($K\geq 1$), seeks the best…

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

High-Resolution Electron Backscatter Diffraction (HR-EBSD) has advanced rapidly in recent years, significantly improving elastic strain measurements and dislocation density evaluation with submicron spatial resolution. To achieve better…

材料科学 · 物理学 2026-04-20 Xinke Xiao , Tianle Ma , Lingxuan Shao , Jun Liu , Qiwei Shi , Canying Cai , Stéphane Roux

The Wasserstein distance is a discrepancy measure between probability distributions, defined by an optimal transport problem. It has been used for various tasks such as retrieving similar items in high-dimensional images or text data. In…

数据结构与算法 · 计算机科学 2026-01-21 Kanata Teshigawara , Keisho Oh , Ken Kobayashi , Kazuhide Nakata

We consider the problem of reconstructing an embedding of a compact connected Riemannian manifold in a Euclidean space up to an almost isometry, given the information on intrinsic distances between points from its ``sufficiently large''…

最优化与控制 · 数学 2024-01-26 Nikita Puchkin , Vladimir Spokoiny , Eugene Stepanov , Dario Trevisan

The Gromov-Wasserstein (GW) framework adapts ideas from optimal transport to allow for the comparison of probability distributions defined on different metric spaces. Scalable computation of GW distances and associated matchings on graphs…

机器学习 · 计算机科学 2021-05-05 Samir Chowdhury , David Miller , Tom Needham

We introduce sliced optimal transport dataset distance (s-OTDD), a model-agnostic, embedding-agnostic approach for dataset comparison that requires no training, is robust to variations in the number of classes, and can handle disjoint label…

机器学习 · 计算机科学 2025-05-16 Khai Nguyen , Hai Nguyen , Tuan Pham , Nhat Ho