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Despite substantial progress in anomaly synthesis methods, existing diffusion-based and coarse inpainting pipelines commonly suffer from structural deficiencies such as micro-structural discontinuities, limited semantic controllability, and…

计算机视觉与模式识别 · 计算机科学 2025-08-06 Long Qian , Bingke Zhu , Yingying Chen , Ming Tang , Jinqiao Wang

Streaming anomaly detection refers to the problem of detecting anomalous data samples in streams of data. This problem poses challenges that classical and deep anomaly detection methods are not designed to cope with, such as conceptual…

机器学习 · 计算机科学 2022-10-12 Joseph Gallego-Mejia , Oscar Bustos-Brinez , Fabio Gonzalez

Accuracy anomaly detection in user-level network traffic is crucial for network security. Compared with existing models that passively detect specific anomaly classes with large labeled training samples, user-level network traffic contains…

密码学与安全 · 计算机科学 2025-01-16 Tongtong Feng , Qi Qi , Lingqi Guo , Jingyu Wang

In a variety of applications, one desires to detect groups of anomalous data samples, with a group potentially manifesting its atypicality (relative to a reference model) on a low-dimensional subset of the full measured set of features.…

网络与互联网体系结构 · 计算机科学 2015-11-04 Zhicong Qiu , David J. Miller , George Kesidis

This paper describes the architecture and the fundamental methodology of an anomaly detector, which by continuously monitoring Simple Network Management Protocol data and by processing it as complex-events, is able to timely recognize…

密码学与安全 · 计算机科学 2021-06-29 Massimiliano Leone Itria , Enrico Schiavone , Nicola Nostro

Graph anomaly detection is crucial for identifying nodes that deviate from regular behavior within graphs, benefiting various domains such as fraud detection and social network. Although existing reconstruction-based methods have achieved…

机器学习 · 计算机科学 2023-12-25 Junwei He , Qianqian Xu , Yangbangyan Jiang , Zitai Wang , Qingming Huang

Graph Anomaly Detection (GAD) is critical in security-sensitive domains, yet faces reliability challenges: miscalibrated confidence estimation (underconfidence in normal nodes, overconfidence in anomalies), adversarial vulnerability of…

机器学习 · 计算机科学 2025-04-04 Songran Bai , Xiaolong Zheng , Daniel Dajun Zeng

We propose a method for learning the neural network architecture that based on Genetic Algorithm (GA). Our approach uses a genetic algorithm integrated with standard Stochastic Gradient Descent(SGD) which allows the sharing of weights…

神经与进化计算 · 计算机科学 2019-07-08 Hai Victor Habi , Gil Rafalovich

Anomaly detection (AD) plays a pivotal role in numerous web-based applications, including malware detection, anti-money laundering, device failure detection, and network fault analysis. Most methods, which rely on unsupervised learning, are…

机器学习 · 计算机科学 2024-02-07 Haihong Zhao , Chenyi Zi , Yang Liu , Chen Zhang , Yan Zhou , Jia Li

Generalist Anomaly Detection (GAD) aims to train a unified model on an original domain that can detect anomalies in new target domains. Previous GAD methods primarily use only normal samples as references, overlooking the valuable…

计算机视觉与模式识别 · 计算机科学 2025-10-20 Yuexin Wang , Xiaolei Wang , Yizheng Gong , Jimin Xiao

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

During the operation of industrial robots, unusual events may endanger the safety of humans and the quality of production. When collecting data to detect such cases, it is not ensured that data from all potentially occurring errors is…

机器人学 · 计算机科学 2023-11-09 Jan Thieß Brockmann , Marco Rudolph , Bodo Rosenhahn , Bastian Wandt

Anomaly detection in time series data, to identify points that deviate from normal behaviour, is a common problem in various domains such as manufacturing, medical imaging, and cybersecurity. Recently, Generative Adversarial Networks (GANs)…

机器学习 · 计算机科学 2025-05-27 Md Abul Bashar , Richi Nayak

Visual defect assessment is a form of anomaly detection. This is very relevant in finding faults such as cracks and markings in various surface inspection tasks like pavement and automotive parts. The task involves detection of…

计算机视觉与模式识别 · 计算机科学 2019-05-31 Manpreet Singh Minhas , John Zelek

This paper proposes an innovative Attention-GAN framework for enhancing cybersecurity, focusing on anomaly detection. In response to the challenges posed by the constantly evolving nature of cyber threats, the proposed approach aims to…

密码学与安全 · 计算机科学 2024-02-29 Mohammed Abo Sen

In this paper, we investigate algorithms for anomaly detection. Previous anomaly detection methods focus on modeling the distribution of non-anomalous data provided during training. However, this does not necessarily ensure the correct…

机器学习 · 计算机科学 2020-05-29 Ziyi Yang , Iman Soltani Bozchalooi , Eric Darve

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

The increasing demand for robust security solutions across various industries has made Video Anomaly Detection (VAD) a critical task in applications such as intelligent surveillance, evidence investigation, and violence detection.…

机器学习 · 计算机科学 2025-01-15 Sanggeon Yun , Ryozo Masukawa , William Youngwoo Chung , Minhyoung Na , Nathaniel Bastian , Mohsen Imani

Anomaly detection is a crucial process in industrial manufacturing and has made significant advancements recently. However, there is a large variance between the data used in the development and the data collected by the production…

计算机视觉与模式识别 · 计算机科学 2024-09-11 Tianwu Lei , Bohan Wang , Silin Chen , Shurong Cao , Ningmu Zou

Anomaly detection plays in many fields of research, along with the strongly related task of outlier detection, a very important role. Especially within the context of the automated analysis of video material recorded by surveillance…

计算机视觉与模式识别 · 计算机科学 2019-08-09 Thomas Golda , Nils Murzyn , Chengchao Qu , Kristian Kroschel