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Automatic anomaly detection is a major issue in various areas. Beyond mere detection, the identification of the origin of the problem that produced the anomaly is also essential. This paper introduces a general methodology that can assist…

机器学习 · 统计学 2014-09-17 Tsirizo Rabenoro , Jérôme Lacaille , Marie Cottrell , Fabrice Rossi

Classical anomaly detection is principally concerned with point-based anomalies, those anomalies that occur at a single point in time. Yet, many real-world anomalies are range-based, meaning they occur over a period of time. Motivated by…

机器学习 · 计算机科学 2019-01-04 Nesime Tatbul , Tae Jun Lee , Stan Zdonik , Mejbah Alam , Justin Gottschlich

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…

计算机视觉与模式识别 · 计算机科学 2022-09-15 Yudai Watanabe , Makoto Okabe , Yasunori Harada , Naoji Kashima

Fine-grained anomaly detection has recently been dominated by segmentation based approaches. These approaches first classify each element of the sample (e.g., image patch) as normal or anomalous and then classify the entire sample as…

计算机视觉与模式识别 · 计算机科学 2023-03-03 Niv Cohen , Issar Tzachor , Yedid Hoshen

Due to the complexity of modern IT services, failures can be manifold, occur at any stage, and are hard to detect. For this reason, anomaly detection applied to monitoring data such as logs allows gaining relevant insights to improve IT…

机器学习 · 计算机科学 2023-01-26 Thorsten Wittkopp , Dominik Scheinert , Philipp Wiesner , Alexander Acker , Odej Kao

Inspired by recent advances in coverage-guided analysis of neural networks, we propose a novel anomaly detection method. We show that the hidden activation values contain information useful to distinguish between normal and anomalous…

密码学与安全 · 计算机科学 2021-02-25 Philip Sperl , Jan-Philipp Schulze , Konstantin Böttinger

An experiment to study the entropy method for an anomaly detection system has been performed. The study has been conducted using real data generated from the distributed sensor networks at the Intel Berkeley Research Laboratory. The…

密码学与安全 · 计算机科学 2017-03-14 A. A. Waskita , H. Suhartanto , L. T. Handoko

Anomaly detection in supercomputers is a very difficult problem due to the big scale of the systems and the high number of components. The current state of the art for automated anomaly detection employs Machine Learning methods or…

机器学习 · 计算机科学 2020-07-30 Andrea Borghesi , Andrea Bartolini , Michele Lombardi , Michela Milano , Luca Benini

Anomaly detection is the process of finding data points that deviate from a baseline. In a real-life setting, anomalies are usually unknown or extremely rare. Moreover, the detection must be accomplished in a timely manner or the risk of…

机器学习 · 计算机科学 2019-04-26 Mariem Ben Fadhel , Kofi Nyarko

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…

机器学习 · 计算机科学 2024-05-07 J. R. V. Solaas , N. Tuptuk , E. Mariconti

Ever growing volume and velocity of data coupled with decreasing attention span of end users underscore the critical need for real-time analytics. In this regard, anomaly detection plays a key role as an application as well as a means to…

机器学习 · 统计学 2017-10-16 Dhruv Choudhary , Arun Kejariwal , Francois Orsini

The current concept of Smart Cities influences urban planners and researchers to provide modern, secured and sustainable infrastructure and give a decent quality of life to its residents. To fulfill this need video surveillance cameras have…

计算机视觉与模式识别 · 计算机科学 2021-08-10 Devashree R. Patrikar , Mayur Rajram Parate

Automatic anomaly detection is a major issue in various areas. Beyond mere detection, the identification of the source of the problem that produced the anomaly is also essential. This is particularly the case in aircraft engine health…

机器学习 · 统计学 2016-08-10 Tsirizo Rabenoro , Jérôme Lacaille , Marie Cottrell , Fabrice Rossi

Most anomaly detection systems try to model normal behavior and assume anomalies deviate from it in diverse manners. However, there may be patterns in the anomalies as well. Ideally, an anomaly detection system can exploit patterns in both…

机器学习 · 计算机科学 2023-05-23 Jonas Soenen , Elia Van Wolputte , Vincent Vercruyssen , Wannes Meert , Hendrik Blockeel

Anomaly detection is a method for discovering unusual and suspicious behavior. In many real-world scenarios, the examined events can be directly linked to the actions of an adversary, such as attacks on computer networks or frauds in…

Anomaly detection aims to identify observations that deviate from expected behavior. Because anomalous events are inherently sparse, most frameworks are trained exclusively on normal data to learn a single reference model of normality. This…

Graph structure patterns are widely used to model different area data recently. How to detect anomalous graph information on these graph data has become a popular research problem. The objective of this research is centered on the…

机器学习 · 计算机科学 2023-07-26 Fu Lin , Haonan Gong , Mingkang Li , Zitong Wang , Yue Zhang , Xuexiong Luo

In order to detect unknown intrusions and runtime errors of computer programs, the cyber-security community has developed various detection techniques. Anomaly detection is an approach that is designed to profile the normal runtime behavior…

密码学与安全 · 计算机科学 2021-06-03 Byunggu Yu , Junwhan Kim

Occlusion and clutter are two scene states that make it difficult to detect anomalies in surveillance video. Furthermore, anomaly events are rare and, as a consequence, class imbalance and lack of labeled anomaly data are also key features…

计算机视觉与模式识别 · 计算机科学 2023-11-14 Silas Santiago Lopes Pereira , José Everardo Bessa Maia

Anomaly detection plays a pivotal role in manufacturing quality control, yet its application is constrained by limited abnormal samples and high manual annotation costs. While anomaly synthesis offers a promising solution, existing studies…

计算机视觉与模式识别 · 计算机科学 2026-04-14 Qunyi Zhang , Songan Zhang , Jiaqi Liu , Jinbao Wang , Xiaoning Lei , Guoyang Xie , Guannan Jiang , Zhichao Lu