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相关论文: A Survey of Generalization of Graph Anomaly Detect…

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Graph anomaly detection (GAD), which aims to identify unusual graph instances (nodes, edges, subgraphs, or graphs), has attracted increasing attention in recent years due to its significance in a wide range of applications. Deep learning…

机器学习 · 计算机科学 2025-06-19 Hezhe Qiao , Hanghang Tong , Bo An , Irwin King , Charu Aggarwal , Guansong Pang

A significant number of anomalous nodes in the real world, such as fake news, noncompliant users, malicious transactions, and malicious posts, severely compromises the health of the graph data ecosystem and urgently requires effective…

机器学习 · 计算机科学 2026-03-11 Xiong Zhang , Hong Peng , Changlong Fu , Xin Jin , Yun Yang , Cheng Xie

Graph anomaly detection (GAD) is a vital task since even a few anomalies can pose huge threats to benign users. Recent semi-supervised GAD methods, which can effectively leverage the available labels as prior knowledge, have achieved…

机器学习 · 计算机科学 2023-06-21 Shuang Zhou , Xiao Huang , Ninghao Liu , Huachi Zhou , Fu-Lai Chung , Long-Kai Huang

Graph anomaly detection (GAD) is a vital task since even a few anomalies can pose huge threats to benign users. Recent semi-supervised GAD methods, which can effectively leverage the available labels as prior knowledge, have achieved…

机器学习 · 计算机科学 2023-07-25 Shuang Zhou , Xiao Huang , Ninghao Liu , Fu-Lai Chung , Long-Kai Huang

Graph-level anomaly detection (GAD) describes the problem of detecting graphs that are abnormal in their structure and/or the features of their nodes, as compared to other graphs. One of the challenges in GAD is to devise graph…

计算机视觉与模式识别 · 计算机科学 2021-12-21 Rongrong Ma , Guansong Pang , Ling Chen , Anton van den Hengel

Graph anomaly detection (GAD) aims to identify abnormal nodes that differ from the majority of the nodes in a graph, which has been attracting significant attention in recent years. Existing generalist graph models have achieved remarkable…

机器学习 · 计算机科学 2025-06-03 Hezhe Qiao , Chaoxi Niu , Ling Chen , Guansong Pang

Graph anomaly detection (GAD), which aims to identify abnormal nodes that differ from the majority within a graph, has garnered significant attention. However, current GAD methods necessitate training specific to each dataset, resulting in…

机器学习 · 计算机科学 2024-12-25 Yixin Liu , Shiyuan Li , Yu Zheng , Qingfeng Chen , Chengqi Zhang , Shirui Pan

Graph Anomaly Detection (GAD) aims to identify nodes that deviate from the majority within a graph, playing a crucial role in applications such as social networks and e-commerce. Despite the current advancements in deep learning-based GAD,…

机器学习 · 计算机科学 2025-08-20 Yunfeng Zhao , Yixin Liu , Shiyuan Li , Qingfeng Chen , Yu Zheng , Shirui Pan

Graph anomaly detection (GAD), which aims to detect outliers in graph-structured data, has received increasing research attention recently. However, existing GAD methods assume identical training and testing distributions, which is rarely…

机器学习 · 计算机科学 2025-11-11 Junjun Pan , Yixin Liu , Chuan Zhou , Fei Xiong , Alan Wee-Chung Liew , Shirui Pan

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

Graph anomaly detection (GAD) aims to identify anomalous graphs that significantly deviate from other ones, which has raised growing attention due to the broad existence and complexity of graph-structured data in many real-world scenarios.…

机器学习 · 计算机科学 2024-02-21 Jinyu Cai , Yunhe Zhang , Zhoumin Lu , Wenzhong Guo , See-kiong Ng

Graph anomaly detection (GAD) is a challenging binary classification problem due to its different structural distribution between anomalies and normal nodes -- abnormal nodes are a minority, therefore holding high heterophily and low…

机器学习 · 计算机科学 2024-01-26 Yuan Gao , Xiang Wang , Xiangnan He , Zhenguang Liu , Huamin Feng , Yongdong Zhang

Graph Anomaly Detection (GAD) is a critical task in graph machine learning with vital applications in financial fraud detection and social platform governance. However, existing GAD benchmarks are often restricted to small-scale, curated…

机器学习 · 计算机科学 2026-05-11 Jingjing Zhou , Shiyu Huang , Qing Qing , Zuquan Yuan , Huafei Huang , Ziqi Xu , Mingliang Hou , Xikun Zhang , Renqiang Luo , Ivan Lee

Graph anomaly detection in this paper aims to distinguish abnormal nodes that behave differently from the benign ones accounting for the majority of graph-structured instances. Receiving increasing attention from both academia and industry,…

机器学习 · 计算机科学 2022-10-19 Fanzhen Liu , Xiaoxiao Ma , Jia Wu , Jian Yang , Shan Xue , Amin Beheshti , Chuan Zhou , Hao Peng , Quan Z. Sheng , Charu C. Aggarwal

Distribution shifts on graphs -- the data distribution discrepancies between training and testing a graph machine learning model, are often ubiquitous and unavoidable in real-world scenarios. Such shifts may severely deteriorate the…

机器学习 · 计算机科学 2024-02-20 Shuhan Liu , Kaize Ding

Graph anomaly detection (GAD) is a vital task in graph-based machine learning and has been widely applied in many real-world applications. The primary goal of GAD is to capture anomalous nodes from graph datasets, which evidently deviate…

机器学习 · 计算机科学 2022-12-05 Jingcan Duan , Siwei Wang , Pei Zhang , En Zhu , Jingtao Hu , Hu Jin , Yue Liu , Zhibin Dong

Graph Anomaly Detection (GAD) is a technique used to identify abnormal nodes within graphs, finding applications in network security, fraud detection, social media spam detection, and various other domains. A common method for GAD is Graph…

机器学习 · 计算机科学 2025-01-28 Amit Roy , Juan Shu , Jia Li , Carl Yang , Olivier Elshocht , Jeroen Smeets , Pan Li

Graph anomaly detection (GAD), which aims to identify abnormal nodes that deviate from the majority, has become increasingly important in high-stakes Web domains. However, existing GAD methods follow a "one model per dataset" paradigm,…

机器学习 · 计算机科学 2026-01-27 Yunhui Liu , Tieke He , Yongchao Liu , Can Yi , Hong Jin , Chuntao Hong

Anomaly detection, finding patterns that substantially deviate from those seen previously, is one of the fundamental problems of artificial intelligence. Recently, classification-based methods were shown to achieve superior results on this…

机器学习 · 计算机科学 2020-05-06 Liron Bergman , Yedid Hoshen

With the recent advances in technology, a wide range of systems continue to collect a large amount of data over time and thus generate time series. Time-Series Anomaly Detection (TSAD) is an important task in various time-series…

机器学习 · 计算机科学 2025-05-01 Thi Kieu Khanh Ho , Ali Karami , Narges Armanfard
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