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Water is the lifeblood of river networks, and its quality plays a crucial role in sustaining both aquatic ecosystems and human societies. Real-time monitoring of water quality is increasingly reliant on in-situ sensor technology. Anomaly…

Machine Learning · Computer Science 2023-06-02 Katie Buchhorn , Edgar Santos-Fernandez , Kerrie Mengersen , Robert Salomone

For weakly supervised anomaly detection, most existing work is limited to the problem of inadequate video representation due to the inability of modeling long-term contextual information. To solve this, we propose a novel weakly supervised…

Computer Vision and Pattern Recognition · Computer Science 2022-12-28 Congqi Cao , Xin Zhang , Shizhou Zhang , Peng Wang , Yanning Zhang

Graph signal processing deals with algorithms and signal representations that leverage graph structures for multivariate data analysis. Often said graph topology is not readily available and may be time-varying, hence (dynamic) graph…

Signal Processing · Electrical Eng. & Systems 2024-09-20 Hector Chahuara , Gonzalo Mateos

Graph-based anomaly detection finds numerous applications in the real-world. Thus, there exists extensive literature on the topic that has recently shifted toward deep detection models due to advances in deep learning and graph neural…

Machine Learning · Computer Science 2022-10-21 Lingxiao Zhao , Saurabh Sawlani , Arvind Srinivasan , Leman Akoglu

With the widespread adoption of cloud services, especially the extensive deployment of plenty of Web applications, it is important and challenging to detect anomalies from the packet payload. For example, the anomalies in the packet payload…

Signal Processing · Electrical Eng. & Systems 2021-05-20 Jiaxin Liu , Xucheng Song , Yingjie Zhou , Xi Peng , Yanru Zhang , Pei Liu , Dapeng Wu

Network or physical attacks on industrial equipment or computer systems may cause massive losses. Therefore, a quick and accurate anomaly detection (AD) based on monitoring data, especially the multivariate time-series (MTS) data, is of…

Machine Learning · Computer Science 2022-11-03 Jun Zhan , Chengkun Wu , Canqun Yang , Qiucheng Miao , Xiandong Ma

We address the problem of anomaly detection, that is, detecting anomalous events in a video sequence. Anomaly detection methods based on convolutional neural networks (CNNs) typically leverage proxy tasks, such as reconstructing input video…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Hyunjong Park , Jongyoun Noh , Bumsub Ham

This paper presents a tutorial for network anomaly detection, focusing on non-signature-based approaches. Network traffic anomalies are unusual and significant changes in the traffic of a network. Networks play an important role in today's…

Cryptography and Security · Computer Science 2014-02-05 Hong Huang , Hussein Al-Azzawi , Hajar Brani

5G and Beyond Networks become increasingly complex and heterogeneous, with diversified and high requirements from a wide variety of emerging applications. The complexity and diversity of Telecom networks place an increasing strain on…

Machine Learning · Computer Science 2023-11-27 R. Bourgerie , T. Zanouda

This systematic review focuses on anomaly detection for connected and autonomous vehicles. The initial database search identified 2160 articles, of which 203 were included in this review after rigorous screening and assessment. This study…

Machine Learning · Computer Science 2024-05-07 J. R. V. Solaas , N. Tuptuk , E. Mariconti

Graph Neural Networks (GNNs) are widely applied for graph anomaly detection. As one of the key components for GNN design is to select a tailored spectral filter, we take the first step towards analyzing anomalies via the lens of the graph…

Machine Learning · Computer Science 2022-06-01 Jianheng Tang , Jiajin Li , Ziqi Gao , Jia Li

Anomaly detection is a key goal of autonomous surveillance systems that should be able to alert unusual observations. In this paper, we propose a holistic anomaly detection system using deep neural networks for surveillance of critical…

Computer Vision and Pattern Recognition · Computer Science 2020-11-06 Ilker Bozcan , Erdal Kayacan

Detecting anomaly patterns from images is a crucial artificial intelligence technique in industrial applications. Recent research in this domain has emphasized the necessity of a large volume of training data, overlooking the practical…

Computer Vision and Pattern Recognition · Computer Science 2025-07-30 Shenxing Wei , Xing Wei , Zhiheng Ma , Songlin Dong , Shaochen Zhang , Yihong Gong

In today's world, modern infrastructures are being equipped with information and communication technologies to create large IoT networks. It is essential to monitor these networks to ensure smooth operations by detecting and correcting link…

Networking and Internet Architecture · Computer Science 2026-02-20 Blaž Bertalanič , Matej Vnučec , Carolina Fortuna

Modelling long-range dependencies is critical for scene understanding tasks in computer vision. Although convolution neural networks (CNNs) have excelled in many vision tasks, they are still limited in capturing long-range structured…

Computer Vision and Pattern Recognition · Computer Science 2022-09-21 Li Zhang , Mohan Chen , Anurag Arnab , Xiangyang Xue , Philip H. S. Torr

In this paper, we propose a deep convolutional neural network (CNN) for anomaly detection in surveillance videos. The model is adapted from a typical auto-encoder working on video patches under the perspective of sparse combination…

Computer Vision and Pattern Recognition · Computer Science 2019-08-20 Trong Nguyen Nguyen , Jean Meunier

$Anomaly$ $detection$ problems (also called $change$-$point$ $detection$ problems) have been studied in data mining, statistics and computer science over the last several decades in applications such as medical condition monitoring and…

Data Structures and Algorithms · Computer Science 2019-12-23 Bhaskar DasGupta , Mano Vikash Janardhanan , Farzane Yahyanejad

Convolutional networks have been the paradigm of choice in many computer vision applications. The convolution operation however has a significant weakness in that it only operates on a local neighborhood, thus missing global information.…

Computer Vision and Pattern Recognition · Computer Science 2020-09-11 Irwan Bello , Barret Zoph , Ashish Vaswani , Jonathon Shlens , Quoc V. Le

Detection of object anomalies is crucial in industrial processes, but unsupervised anomaly detection and localization is particularly important due to the difficulty of obtaining a large number of defective samples and the unpredictable…

Computer Vision and Pattern Recognition · Computer Science 2022-12-16 Ruiqing Yan , Fan Zhang , Mengyuan Huang , Wu Liu , Dongyu Hu , Jinfeng Li , Qiang Liu , Jinrong Jiang , Qianjin Guo , Linghan Zheng

Anomaly detection on the attributed network has recently received increasing attention in many research fields, such as cybernetic anomaly detection and financial fraud detection. With the wide application of deep learning on graph…

Social and Information Networks · Computer Science 2022-09-13 Yuanjun Shi