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Through continuous observation and modeling of normal behavior in networks, Anomaly-based Network Intrusion Detection System (A-NIDS) offers a way to find possible threats via deviation from the normal model. The analysis of network traffic…

Networking and Internet Architecture · Computer Science 2019-06-13 Nguyen Thanh Van , Tran Ngoc Thinh , Le Thanh Sach

Anomaly detection is defined as the problem of finding data points that do not follow the patterns of the majority. Among the various proposed methods for solving this problem, classification-based methods, including one-class Support…

Optimization and Control · Mathematics 2023-12-05 Amir Hossein Noormohammadia , Seyed Ali MirHassania , Farnaz Hooshmand Khaligh

Spatiotemporal sequence prediction is an important problem in deep learning. We study next-frame(s) video prediction using a deep-learning-based predictive coding framework that uses convolutional, long short-term memory (convLSTM) modules.…

Machine Learning · Computer Science 2020-01-24 Nelly Elsayed , Anthony S. Maida , Magdy Bayoumi

How can we detect anomalies: that is, samples that significantly differ from a given set of high-dimensional data, such as images or sensor data? This is a practical problem with numerous applications and is also relevant to the goal of…

Machine Learning · Computer Science 2022-06-16 Adam Goodge , Bryan Hooi , See Kiong Ng , Wee Siong Ng

On-line detection of anomalies in time series is a key technique used in various event-sensitive scenarios such as robotic system monitoring, smart sensor networks and data center security. However, the increasing diversity of data sources…

Machine Learning · Computer Science 2021-04-26 Wentai Wu , Ligang He , Weiwei Lin , Yi Su , Yuhua Cui , Carsten Maple , Stephen Jarvis

Spacecraft faces various situations when carrying out exploration missions in complex space, thus monitoring the anomaly status of spacecraft is crucial to the development of \textcolor{blue}{the} aerospace industry. The time series…

Machine Learning · Computer Science 2023-03-14 Liang Liu , Ling Tian , Zhao Kang , Tianqi Wan

Human actions captured in video sequences are three-dimensional signals characterizing visual appearance and motion dynamics. To learn action patterns, existing methods adopt Convolutional and/or Recurrent Neural Networks (CNNs and RNNs).…

Computer Vision and Pattern Recognition · Computer Science 2017-08-15 Lin Sun , Kui Jia , Kevin Chen , Dit Yan Yeung , Bertram E. Shi , Silvio Savarese

Video anomaly detection is of critical practical importance to a variety of real applications because it allows human attention to be focused on events that are likely to be of interest, in spite of an otherwise overwhelming volume of…

Computer Vision and Pattern Recognition · Computer Science 2020-03-17 Guansong Pang , Cheng Yan , Chunhua Shen , Anton van den Hengel , Xiao Bai

Anomaly detection in time series has been widely researched and has important practical applications. In recent years, anomaly detection algorithms are mostly based on deep-learning generative models and use the reconstruction error to…

Machine Learning · Computer Science 2020-10-15 Chunkai Zhang , Wei Zuo , Xuan Wang

Congestion prediction represents a major priority for traffic management centres around the world to ensure timely incident response handling. The increasing amounts of generated traffic data have been used to train machine learning…

Signal Processing · Electrical Eng. & Systems 2020-06-25 Adriana-Simona Mihaita , Haowen Li , Marian-Andrei Rizoiu

Action recognition greatly benefits motion understanding in video analysis. Recurrent networks such as long short-term memory (LSTM) networks are a popular choice for motion-aware sequence learning tasks. Recently, a convolutional extension…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Sebastian Agethen , Winston H. Hsu

Region of Interest (ROI) crowd counting can be formulated as a regression problem of learning a mapping from an image or a video frame to a crowd density map. Recently, convolutional neural network (CNN) models have achieved promising…

Computer Vision and Pattern Recognition · Computer Science 2017-07-26 Feng Xiong , Xingjian Shi , Dit-Yan Yeung

Existing Multivariate Time Series Anomaly Detection (MTSAD) frameworks increasingly rely on integrating Graph Neural Networks (GNNs) with sequence models to capture complex spatio-temporal dependencies. However, less attention is paid to…

Artificial Intelligence · Computer Science 2026-05-19 Suofei Zhang , Yaxuan Zheng , Haifeng Hu

If machine failures can be detected preemptively, then maintenance and repairs can be performed more efficiently, reducing production costs. Many machine learning techniques for performing early failure detection using vibration data have…

Neural and Evolutionary Computing · Computer Science 2021-03-05 Arnav V. Malawade , Nathan D. Costa , Deepan Muthirayan , Pramod P. Khargonekar , Mohammad A. Al Faruque

Recently, anomaly detection and localization in multimedia data have received significant attention among the machine learning community. In real-world applications such as medical diagnosis and industrial defect detection, anomalies only…

Computer Vision and Pattern Recognition · Computer Science 2022-05-16 Chaoqin Huang , Qinwei Xu , Yanfeng Wang , Yu Wang , Ya Zhang

The aim of this work is to detect and automatically generate high-level explanations of anomalous events in video. Understanding the cause of an anomalous event is crucial as the required response is dependant on its nature and severity.…

Computer Vision and Pattern Recognition · Computer Science 2021-12-13 Stanislaw Szymanowicz , James Charles , Roberto Cipolla

The authors have introduced a novel method for unsupervised anomaly detection that utilises a newly introduced Memory Module in their paper. We validate the authors claim that this helps improve performance by helping the network learn…

Computer Vision and Pattern Recognition · Computer Science 2021-02-01 Kevin Stephen , Varun Menon

We propose a lightweight and accurate method for detecting anomalies in videos. Existing methods used multiple-instance learning (MIL) to determine the normal/abnormal status of each segment of the video. Recent successful researches argue…

Computer Vision and Pattern Recognition · Computer Science 2022-09-15 Yudai Watanabe , Makoto Okabe , Yasunori Harada , Naoji Kashima

Surveillance videos are able to capture a variety of realistic anomalies. In this paper, we propose to learn anomalies by exploiting both normal and anomalous videos. To avoid annotating the anomalous segments or clips in training videos,…

Computer Vision and Pattern Recognition · Computer Science 2019-02-15 Waqas Sultani , Chen Chen , Mubarak Shah

An unsolved issue in widely used methods such as Support Vector Data Description (SVDD) and Small Sphere and Large Margin SVM (SSLM) for anomaly detection is their nonconvexity, which hampers the analysis of optimal solutions in a manner…

Machine Learning · Computer Science 2025-10-01 Hongying Liu , Hao Wang , Haoran Chu , Yibo Wu