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Metric $k$-center clustering is a fundamental unsupervised learning primitive. Although widely used, this primitive is heavily affected by noise in the data, so that a more sensible variant seeks for the best solution that disregards a…

机器学习 · 计算机科学 2022-02-28 Paolo Pellizzoni , Andrea Pietracaprina , Geppino Pucci

A self-supervised multi-task learning (SSMTL) framework for video anomaly detection was recently introduced in literature. Due to its highly accurate results, the method attracted the attention of many researchers. In this work, we revisit…

Video Anomaly Detection (VAD) aims to localize abnormal events on the timeline of long-range surveillance videos. Anomaly-scoring-based methods have been prevailing for years but suffer from the high complexity of thresholding and low…

计算机视觉与模式识别 · 计算机科学 2024-01-12 Hui Lv , Qianru Sun

Detection of abnormal BGP events is of great importance to preserve the security and robustness of the Internet inter-domain routing system. In this paper, we propose an anomaly detection framework based on machine learning techniques to…

网络与互联网体系结构 · 计算机科学 2017-08-14 Anisa Allahdadi , Ricardo Morla , Rui Prior

Anomaly detection is a challenging problem in intelligent video surveillance. Most existing methods are computation consuming, which cannot satisfy the real-time requirement. In this paper, we propose a real-time anomaly detection framework…

计算机视觉与模式识别 · 计算机科学 2018-12-13 Huihui Zhu , Bin Liu , Guojun Yin , Yan Lu , Weihai Li , Nenghai Yu

The increasing availability of traffic data from sensor networks has created new opportunities for understanding vehicular dynamics and identifying anomalies. In this study, we employ clustering techniques to analyse traffic flow data with…

机器学习 · 计算机科学 2025-09-26 Davide Moretti , Elia Onofri , Emiliano Cristiani

Modern cities experience heavy traffic flows and congestions regularly across space and time. Monitoring traffic situations becomes an important challenge for the Traffic Control and Surveillance Systems (TCSS). In advanced TCSS, it is…

机器学习 · 计算机科学 2015-12-29 Li-Li Wang , Henry Y. T. Ngan , Nelson H. C. Yung

A computational theory for clustering and a semi-supervised clustering algorithm is presented. Clustering is defined to be the obtainment of groupings of data such that each group contains no anomalies with respect to a chosen grouping…

机器学习 · 计算机科学 2025-07-17 Nassir Mohammad

This paper presents a new approach, based on polynomial optimization and the method of moments, to the problem of anomaly detection. The proposed technique only requires information about the statistical moments of the normal-state…

最优化与控制 · 数学 2015-06-02 Jose A. Lopez , Octavia Camps , Mario Sznaier

Anomaly detection in videos is a challenging task as anomalies in different videos are of different kinds. Therefore, a promising way to approach video anomaly detection is by learning the non-anomalous nature of the video at hand. To this…

计算机视觉与模式识别 · 计算机科学 2025-03-04 Gargi V. Pillai , Ashish Verma , Debashis Sen

The widespread implementation of urban surveillance systems has necessitated more sophisticated techniques for anomaly detection to ensure enhanced public safety. This paper presents a significant advancement in the field of anomaly…

计算机视觉与模式识别 · 计算机科学 2024-11-14 Sareh Soltani Nejad , Anwar Haque

Optimized scene representation is an important characteristic of a framework for detecting abnormalities on live videos. One of the challenges for detecting abnormalities in live videos is real-time detection of objects in a non-parametric…

计算机视觉与模式识别 · 计算机科学 2018-06-12 Santhosh Kelathodi Kumaran , Debi Prosad Dogra , Partha Pratim Roy

Machine learning offers potential solutions to current issues in industrial systems in areas such as quality control and predictive maintenance, but also faces unique barriers in industrial applications. An ongoing challenge is extreme…

机器学习 · 计算机科学 2026-01-15 Lesley Wheat , Martin v. Mohrenschildt , Saeid Habibi

Continuous-time event sequences represent discrete events occurring in continuous time. Such sequences arise frequently in real-life. Usually we expect the sequences to follow some regular pattern over time. However, sometimes these…

机器学习 · 计算机科学 2021-06-15 Siqi Liu , Milos Hauskrecht

Target tracking and trajectory modeling have important applications in surveillance video analysis and have received great attention in the fields of road safety and community security. In this work, we propose a lightweight real-time video…

计算机视觉与模式识别 · 计算机科学 2023-05-16 Aximu Yuemaier , Xiaogang Chen , Xingyu Qian , Longfei Liang , Shunfeng Li , Zhitang Song

In this paper, we propose a weakly supervised deep temporal encoding-decoding solution for anomaly detection in surveillance videos using multiple instance learning. The proposed approach uses both abnormal and normal video clips during the…

计算机视觉与模式识别 · 计算机科学 2021-01-06 Ammar Mansoor Kamoona , Amirali Khodadadian Gosta , Alireza Bab-Hadiashar , Reza Hoseinnezhad

Recent advances in technology have made our work easier compare to earlier times. Computer network is growing day by day but while discussing about the security of computers and networks it has always been a major concerns for organizations…

分布式、并行与集群计算 · 计算机科学 2014-04-11 Ravi Ranjan , G. Sahoo

Atom probe tomography is commonly used to study solute clustering and precipitation in materials. However, standard techniques, such as the density based spatial clustering applications with noise (DBSCAN) perform poorly with respect to…

材料科学 · 物理学 2025-09-05 R S. Stroud , A. Al-Saffar , M. Carter , M P. Moody , S. Pedrazzini , M R. Wenman

Outlier detection and cluster number estimation is an important issue for clustering real data. This paper focuses on spectral clustering, a time-tested clustering method, and reveals its important properties related to outliers. The…

计算机视觉与模式识别 · 计算机科学 2017-03-06 Takuro Ina , Atsushi Hashimoto , Masaaki Iiyama , Hidekazu Kasahara , Mikihiko Mori , Michihiko Minoh

Anomaly detection is a popular and vital task in various research contexts, which has been studied for several decades. To ensure the safety of people's lives and assets, video surveillance has been widely deployed in various public spaces,…

计算机视觉与模式识别 · 计算机科学 2021-10-12 Jing Ren , Feng Xia , Yemeng Liu , Ivan Lee
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