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This work presents an experimental evaluation of the detection performance of eight different algorithms for anomaly detection on the Controller Area Network (CAN) bus of modern vehicles based on the analysis of the timing or frequency of…

Cryptography and Security · Computer Science 2023-07-11 Francesco Pollicino , Dario Stabili , Mirco Marchetti

Benchmark datasets for digital dermatology unwittingly contain inaccuracies that reduce trust in model performance estimates. We propose a resource-efficient data-cleaning protocol to identify issues that escaped previous curation. The…

Anomaly detection in imbalanced datasets is a frequent and crucial problem, especially in the medical domain where retrieving and labeling irregularities is often expensive. By combining the generative stability of a $\beta$-variational…

Machine Learning · Computer Science 2023-10-30 Fiete Lüer , Tobias Weber , Maxim Dolgich , Christian Böhm

Video anomaly detection is an ill-posed problem because it relies on many parameters such as appearance, pose, camera angle, background, and more. We distill the problem to anomaly detection of human pose, thus decreasing the risk of…

Computer Vision and Pattern Recognition · Computer Science 2023-08-17 Or Hirschorn , Shai Avidan

Automated detection of anomalous trajectories is an important problem with considerable applications in intelligent transportation systems. Many existing studies have focused on distinguishing anomalous trajectories from normal…

Machine Learning · Computer Science 2022-07-26 Tianle Ni , Jingwei Wang , Yunlong Ma , Shuang Wang , Min Liu , Weiming Shen

The evolving landscape of electric power networks, influenced by the integration of distributed energy resources require the development of novel power system monitoring and control architectures. This paper develops algorithm to monitor…

Systems and Control · Electrical Eng. & Systems 2024-12-05 Erfan Mehdipour Abadi , Masoud H. Nazari

We consider the problem of detecting, in the visual sensing data stream of an autonomous mobile robot, semantic patterns that are unusual (i.e., anomalous) with respect to the robot's previous experience in similar environments. These…

Key Performance Indicators (KPIs) are essential time-series metrics for ensuring the reliability and stability of many software systems. They faithfully record runtime states to facilitate the understanding of anomalous system behaviors and…

Software Engineering · Computer Science 2024-01-15 Jinyang Liu , Wenwei Gu , Zhuangbin Chen , Yichen Li , Yuxin Su , Michael R. Lyu

Classification algorithms aim to predict an unknown label (e.g., a quality class) for a new instance (e.g., a product). Therefore, training samples (instances and labels) are used to deduct classification hypotheses. Often, it is relatively…

Machine Learning · Computer Science 2019-01-30 Daniel Kottke , Jim Schellinger , Denis Huseljic , Bernhard Sick

Anomaly detection (AD) has garnered ample attention in security research, as such algorithms complement existing signature-based methods but promise detection of never-before-seen attacks. Cyber operations manage a high volume of…

Cryptography and Security · Computer Science 2017-10-27 Robert A. Bridges , Jessie D. Jamieson , Joel W. Reed

The task of detecting anomalous data patterns is as important in practical applications as challenging. In the context of spatial data, recognition of unexpected trajectories brings additional difficulties, such as high dimensionality and…

Anomaly detection is a common analytical task that aims to identify rare cases that differ from the typical cases that make up the majority of a dataset. When applied to the analysis of event sequence data, the task of anomaly detection can…

Human-Computer Interaction · Computer Science 2020-04-16 Shunan Guo , Zhuochen Jin , Qing Chen , David Gotz , Hongyuan Zha , Nan Cao

Outlier ensemble methods have shown outstanding performance on the discovery of instances that are significantly different from the majority of the data. However, without the awareness of fairness, their applicability in the ethical…

Machine Learning · Computer Science 2021-03-18 Haoyu Liu , Fenglong Ma , Shibo He , Jiming Chen , Jing Gao

We propose a new method to define anomaly scores and apply this to particle physics collider events. Anomalies can be either rare, meaning that these events are a minority in the normal dataset, or different, meaning they have values that…

High Energy Physics - Phenomenology · Physics 2022-03-09 Sascha Caron , Luc Hendriks , Rob Verheyen

We propose a supervised anomaly detection method for data with inexact anomaly labels, where each label, which is assigned to a set of instances, indicates that at least one instance in the set is anomalous. Although many anomaly detection…

Machine Learning · Statistics 2019-09-12 Tomoharu Iwata , Machiko Toyoda , Shotaro Tora , Naonori Ueda

In recent years, many works have addressed the problem of finding never-seen-before anomalies in videos. Yet, most work has been focused on detecting anomalous frames in surveillance videos taken from security cameras. Meanwhile, the task…

Computer Vision and Pattern Recognition · Computer Science 2021-12-15 Laura Kart , Niv Cohen

The SportsMOT dataset aims to solve multiple object tracking of athletes in different sports scenes such as basketball or soccer. The dataset is challenging because of the unstable camera view, athletes' complex trajectory, and complicated…

Computer Vision and Pattern Recognition · Computer Science 2023-02-16 Jie Wang , Yuzhou Peng , Xiaodong Yang , Ting Wang , Yanming Zhang

Anomaly detection systems need to consider a lot of information when scanning for anomalies. One example is the context of the process in which an anomaly might occur, because anomalies for one process might not be anomalies for a different…

Machine Learning · Computer Science 2021-01-18 Sebastian Eresheim , Lukas Daniel Klausner , Patrick Kochberger

Comparing model performances on benchmark datasets is an integral part of measuring and driving progress in artificial intelligence. A model's performance on a benchmark dataset is commonly assessed based on a single or a small set of…

Artificial Intelligence · Computer Science 2021-11-09 Kathrin Blagec , Georg Dorffner , Milad Moradi , Matthias Samwald

Anomaly detection (AD) is a crucial task in machine learning with various applications, such as detecting emerging diseases, identifying financial frauds, and detecting fake news. However, obtaining complete, accurate, and precise labels…

Machine Learning · Computer Science 2023-02-10 Minqi Jiang , Chaochuan Hou , Ao Zheng , Xiyang Hu , Songqiao Han , Hailiang Huang , Xiangnan He , Philip S. Yu , Yue Zhao
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