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We consider the problem of anomaly detection with a small set of partially labeled anomaly examples and a large-scale unlabeled dataset. This is a common scenario in many important applications. Existing related methods either exclusively…

机器学习 · 计算机科学 2021-06-11 Guansong Pang , Anton van den Hengel , Chunhua Shen , Longbing Cao

A common study area in anomaly identification is industrial images anomaly detection based on texture background. The interference of texture images and the minuteness of texture anomalies are the main reasons why many existing models fail…

计算机视觉与模式识别 · 计算机科学 2022-09-20 Yaohua Guo , Lijuan Song , Zirui Ma

Estimating correspondences between pairs of non-rigid deformable 3D shapes remains a significant challenge in computer vision and graphics. While deep functional map methods have become the go-to solution for addressing this problem, they…

计算机视觉与模式识别 · 计算机科学 2026-03-20 Feifan Luo , Hongyang Chen

Unconditional flow-matching trains diffusion models to transport samples from a source distribution to a target distribution by enforcing that the flows between sample pairs are unique. However, in conditional settings (e.g.,…

计算机视觉与模式识别 · 计算机科学 2025-06-06 George Stoica , Vivek Ramanujan , Xiang Fan , Ali Farhadi , Ranjay Krishna , Judy Hoffman

Unsupervised pathology detection can be implemented by training a model on healthy data only and measuring the deviation from the training set upon inference, for example with CNN-based feature extraction and one-class classifiers, or…

图像与视频处理 · 电气工程与系统科学 2024-03-28 Aissam Djahnine , Alexandre Popoff , Emilien Jupin-Delevaux , Vincent Cottin , Olivier Nempont , Loic Boussel

Contrastive learning is a well-established paradigm in representation learning. The standard framework of contrastive learning minimizes the distance between "similar" instances and maximizes the distance between dissimilar ones in the…

机器学习 · 计算机科学 2025-02-06 Naghmeh Ghanooni , Barbod Pajoum , Harshit Rawal , Sophie Fellenz , Vo Nguyen Le Duy , Marius Kloft

High-dimensional feature spaces in particle physics events pose a fundamental challenge to density-estimation-based weakly supervised anomaly detection, whose fidelity degrades rapidly with an increasing number of dimensions. We propose a…

高能物理 - 唯象学 · 物理学 2026-03-30 Runze Li , Benjamin Nachman , Dennis Noll

Time series anomaly detection holds notable importance for risk identification and fault detection across diverse application domains. Unsupervised learning methods have become popular because they have no requirement for labels. However,…

机器学习 · 计算机科学 2025-05-05 Wenxin Zhang , Xiaojian Lin , Wenjun Yu , Guangzhen Yao , jingxiang Zhong , Yu Li , Renda Han , Songcheng Xu , Hao Shi , Cuicui Luo

Graph anomaly detection aims to identify abnormal patterns in networks, but faces significant challenges from label scarcity and extreme class imbalance. While graph contrastive learning offers a promising unsupervised solution, existing…

机器学习 · 计算机科学 2026-01-30 Kamal Berahmand , Saman Forouzandeh , Mehrnoush Mohammadi , Parham Moradi , Mahdi Jalili

Anomaly detection or more generally outliers detection is one of the most popular and challenging subject in theoretical and applied machine learning. The main challenge is that in general we have access to very few labeled data or no…

机器学习 · 计算机科学 2023-05-31 Mansour Zoubeirou A Mayaki , Michel Riveill

Anomaly detection based on 3D point cloud data is an important research problem and receives more and more attention recently. Untrained anomaly detection based on only one sample is an emerging research problem motivated by real…

机器学习 · 计算机科学 2025-07-29 Juan Du , Dongheng Chen

Continuous efforts are being made to advance anomaly detection in various manufacturing processes to increase the productivity and safety of industrial sites. Deep learning replaced rule-based methods and recently emerged as a promising…

机器学习 · 计算机科学 2024-06-28 Kukjin Choi , Jihun Yi , Jisoo Mok , Sungroh Yoon

Anomaly detection is important in many real-life applications. Recently, self-supervised learning has greatly helped deep anomaly detection by recognizing several geometric transformations. However these methods lack finer features, usually…

计算机视觉与模式识别 · 计算机科学 2022-12-12 Loic Jezequel , Ngoc-Son Vu , Jean Beaudet , Aymeric Histace

Contrastive learning has gained popularity and pushes state-of-the-art performance across numerous large-scale benchmarks. In contrastive learning, the contrastive loss function plays a pivotal role in discerning similarities between…

计算机视觉与模式识别 · 计算机科学 2025-12-03 Haojin Deng , Yimin Yang

Contrastive self-supervised learning (SSL) learns an embedding space that maps similar data pairs closer and dissimilar data pairs farther apart. Despite its success, one issue has been overlooked: the fairness aspect of representations…

Anomaly detection suffered from the lack of anomalies due to the diversity of abnormalities and the difficulties of obtaining large-scale anomaly data. Semi-supervised anomaly detection methods are often used to solely leverage normal data…

计算机视觉与模式识别 · 计算机科学 2023-04-11 Jian Shi , Ni Zhang

Recent works have shown that optical flow can be learned by deep networks from unlabelled image pairs based on brightness constancy assumption and smoothness prior. Current approaches additionally impose an augmentation regularization term…

计算机视觉与模式识别 · 计算机科学 2022-11-14 Lingtong Kong , Jie Yang

This paper introduces a fine-grained contrastive learning scheme for unsupervised node clustering. Previous clustering methods only focus on a small feature set (class-dependent features), which demonstrates explicit clustering…

社会与信息网络 · 计算机科学 2024-09-13 Hang Cui , Tarek Abdelzaher

The widespread implementation of urban surveillance systems has necessitated more sophisticated techniques for anomaly detection to ensure enhanced public safety. This paper presents a significant advancement in the field of anomaly…

计算机视觉与模式识别 · 计算机科学 2024-11-14 Sareh Soltani Nejad , Anwar Haque

Vessel segmentation is an essential task in many clinical applications. Although supervised methods have achieved state-of-art performance, acquiring expert annotation is laborious and mostly limited for two-dimensional datasets with a…

图像与视频处理 · 电气工程与系统科学 2021-07-23 Rohit Jena , Sumedha Singla , Kayhan Batmanghelich