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Graph anomaly detection (GAD) is critical for identifying abnormal nodes in graph-structured data from diverse domains, including cybersecurity and social networks. The existing GAD methods often focus on the learning paradigms of…

机器学习 · 计算机科学 2026-02-24 Yixin Liu , Shiyuan Li , Yu Zheng , Qingfeng Chen , Chengqi Zhang , Philip S. Yu , Shirui Pan

Anomaly detection (AD) plays a vital role across a wide range of real-world domains by identifying data instances that deviate from expected patterns, potentially signaling critical events such as system failures, fraudulent activities, or…

机器学习 · 计算机科学 2025-07-11 Amirhossein Sadough , Mahyar Shahsavari , Mark Wijtvliet , Marcel van Gerven

This paper introduces a novel anomaly detection (AD) problem aimed at identifying `odd-looking' objects within a scene by comparing them to other objects present. Unlike traditional AD benchmarks with fixed anomaly criteria, our task…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Ankan Bhunia , Changjian Li , Hakan Bilen

Graph anomaly detection (GAD) has attracted increasing attention in machine learning and data mining. Recent works have mainly focused on how to capture richer information to improve the quality of node embeddings for GAD. Despite their…

机器学习 · 计算机科学 2023-10-03 Jingcan Duan , Pei Zhang , Siwei Wang , Jingtao Hu , Hu Jin , Jiaxin Zhang , Haifang Zhou , Xinwang Liu

Anomaly detection (AD) has been widely studied for decades in many real-world applications, including fraud detection in finance, and intrusion detection for cybersecurity, etc. Due to the imbalanced nature between protected and unprotected…

机器学习 · 计算机科学 2024-09-18 Ziwei Wu , Lecheng Zheng , Yuancheng Yu , Ruizhong Qiu , John Birge , Jingrui He

In the domain of anomaly detection, methods often excel in either high-level semantic or low-level industrial benchmarks, rarely achieving cross-domain proficiency. Semantic anomalies are novelties that differ in meaning from the training…

计算机视觉与模式识别 · 计算机科学 2024-07-18 Luc P. J. Sträter , Mohammadreza Salehi , Efstratios Gavves , Cees G. M. Snoek , Yuki M. Asano

Continual Novel Class Discovery (CNCD) aims to continually discover novel classes without labels while maintaining the recognition capability for previously learned classes. The main challenges faced by CNCD include the feature-discrepancy…

计算机视觉与模式识别 · 计算机科学 2024-05-13 Yifan Yu , Shaokun Wang , Yuhang He , Junzhe Chen , Yihong Gong

Effective anomaly detection in time series is pivotal for modern industrial applications and financial systems. Due to the scarcity of anomaly labels and the high cost of manual labeling, reconstruction-based unsupervised approaches have…

机器学习 · 计算机科学 2025-09-25 Tiejun Wang , Rui Wang , Xudong Mou , Mengyuan Ma , Tianyu Wo , Renyu Yang , Xudong Liu

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

Object detection is a pivotal task in computer vision that has received significant attention in previous years. Nonetheless, the capability of a detector to localise objects out of the training distribution remains unexplored. Whilst…

计算机视觉与模式识别 · 计算机科学 2024-07-23 Brian K. S. Isaac-Medina , Yona Falinie A. Gaus , Neelanjan Bhowmik , Toby P. Breckon

Anomaly detection is crucial to the advanced identification of product defects such as incorrect parts, misaligned components, and damages in industrial manufacturing. Due to the rare observations and unknown types of defects, anomaly…

计算机视觉与模式识别 · 计算机科学 2024-01-11 Jeeho Hyun , Sangyun Kim , Giyoung Jeon , Seung Hwan Kim , Kyunghoon Bae , Byung Jun Kang

Anomaly detection (AD) plays an important role in various real-world applications. Recent advancements in AD, however, are often biased towards industrial inspection, struggle to generalize to broader tasks like semantic anomaly detection…

计算机视觉与模式识别 · 计算机科学 2025-09-30 Hangil Park , Yongmin Seo , Tae-Kyun Kim

Anomaly detection (AD) is a fundamental task of critical importance across numerous domains. Current systems increasingly operate in rapidly evolving environments that generate diverse yet interconnected data modalities -- such as time…

机器学习 · 计算机科学 2025-12-02 Zhongyuan Wu , Jingyuan Wang , Zexuan Cheng , Yilong Zhou , Weizhi Wang , Juhua Pu , Chao Li , Changqing Ma

Anomaly detection is to recognize samples that differ in some respect from the training observations. These samples which do not conform to the distribution of normal data are called outliers or anomalies. In real-world anomaly detection…

计算机视觉与模式识别 · 计算机科学 2022-07-05 Vahid Reza Khazaie , Anthony Wong , Yalda Mohsenzadeh

We present R-ANODE, a new method for data-driven, model-agnostic resonant anomaly detection that raises the bar for both performance and interpretability. The key to R-ANODE is to enhance the inductive bias of the anomaly detection task by…

高能物理 - 唯象学 · 物理学 2023-12-20 Ranit Das , Gregor Kasieczka , David Shih

Anomaly Detection (AD), as a critical problem, has been widely discussed. In this paper, we specialize in one specific problem, Visual Defect Detection (VDD), in many industrial applications. And in practice, defect image samples are very…

计算机视觉与模式识别 · 计算机科学 2022-11-30 Yapeng Teng , Haoyang Li , Fuzhen Cai , Ming Shao , Siyu Xia

Object detection models perform well at localizing and classifying objects that they are shown during training. However, due to the difficulty and cost associated with creating and annotating detection datasets, trained models detect a…

计算机视觉与模式识别 · 计算机科学 2020-12-01 Ayush Jaiswal , Yue Wu , Pradeep Natarajan , Premkumar Natarajan

Anomaly detection (AD) plays an important role in numerous applications. We focus on two understudied aspects of AD that are critical for integration into real-world applications. First, most AD methods cannot incorporate labeled data that…

机器学习 · 计算机科学 2023-06-06 Chun-Hao Chang , Jinsung Yoon , Sercan Arik , Madeleine Udell , Tomas Pfister

Unsupervised anomaly detection (AD) is a fundamental problem in machine learning and statistics. A popular approach to unsupervised AD is clustering-based detection. However, this method lacks the ability to guarantee the reliability of the…

机器学习 · 统计学 2025-04-29 Nguyen Thi Minh Phu , Duong Tan Loc , Vo Nguyen Le Duy

Anomaly detection is a classical problem in computer vision, namely the determination of the normal from the abnormal when datasets are highly biased towards one class (normal) due to the insufficient sample size of the other class…

计算机视觉与模式识别 · 计算机科学 2018-11-14 Samet Akcay , Amir Atapour-Abarghouei , Toby P. Breckon