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Many organisations manage service quality and monitor a large set devices and servers where each entity is associated with telemetry or physical sensor data series. Recently, various methods have been proposed to detect behavioural…

Social and Information Networks · Computer Science 2023-05-10 Len Feremans , Boris Cule , Bart Goethals

Time series anomaly detection is a challenging problem due to the complex temporal dependencies and the limited label data. Although some algorithms including both traditional and deep models have been proposed, most of them mainly focus on…

Machine Learning · Computer Science 2023-03-28 Chaoli Zhang , Tian Zhou , Qingsong Wen , Liang Sun

End-to-end autonomous driving (E2EAD) systems, which learn to predict future trajectories directly from sensor data, are fundamentally challenged by the inherent spatio-temporal imbalance of trajectory data. This imbalance creates a…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Zhiyu Zheng , Shaoyu Chen , Haoran Yin , Xinbang Zhang , Jialv Zou , Xinggang Wang , Qian Zhang , Lefei Zhang

Server virtualization in the form of virtual machines (VMs) with the use of a hypervisor or a Virtual Machine Monitor (VMM) is an essential part of cloud computing technology to provide infrastructure-as-a-service (IaaS). A fault or an…

Distributed, Parallel, and Cluster Computing · Computer Science 2021-11-23 Anshul Jindal , Ilya Shakhat , Jorge Cardoso , Michael Gerndt , Vladimir Podolskiy

The detection of the abnormal area from urban data is a significant research problem. However, to the best of our knowledge, previous methods designed on spatio-temporal anomalies are road-based or grid-based, which usually causes the data…

Social and Information Networks · Computer Science 2020-07-16 Huaishao Luo , Chuishi Meng , Bowen Wu , Junbo Zhang , Tianrui Li , Yu Zheng

The advancement of safety-critical research in driving behavior in ADAS-equipped vehicles require real-world datasets that not only include diverse traffic scenarios but also capture high-risk edge cases such as near-miss events and system…

Computer Vision and Pattern Recognition · Computer Science 2025-12-22 Shaoyan Zhai , Mohamed Abdel-Aty , Chenzhu Wang , Rodrigo Vena Garcia

High false-positive rate is a long-standing challenge for anomaly detection algorithms, especially in high-stake applications. To identify the true anomalies, in practice, analysts or domain experts will be employed to investigate the top…

Machine Learning · Computer Science 2020-09-17 Daochen Zha , Kwei-Herng Lai , Mingyang Wan , Xia Hu

Anomaly detection is a prominent data preprocessing step in learning applications for correction and/or removal of faulty data. Automating this data type with the use of autoencoders could increase the quality of the dataset by isolating…

Machine Learning · Computer Science 2020-04-10 Benjamin Smith , Kevin Cant , Gloria Wang

Trajectory anomaly detection is essential for identifying unusual and unexpected movement patterns in applications ranging from intelligent transportation systems to urban safety and fraud prevention. Existing methods only consider limited…

Machine Learning · Computer Science 2025-09-24 Jonathan Kabala Mbuya , Dieter Pfoser , Antonios Anastasopoulos

Anomaly detection (AD) plays an important role in various real-world applications. Recent advancements in AD, however, are often biased towards industrial inspection, struggle to generalize to broader tasks like semantic anomaly detection…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Hangil Park , Yongmin Seo , Tae-Kyun Kim

Modern vehicles have multiple electronic control units (ECUs) that are connected together as part of a complex distributed cyber-physical system (CPS). The ever-increasing communication between ECUs and external electronic systems has made…

Machine Learning · Computer Science 2021-09-13 S. V. Thiruloga , V. K. Kukkala , S. Pasricha

Out-of-distribution states in robot manipulation often lead to unpredictable robot behavior or task failure, limiting success rates and increasing risk of damage. Anomaly detection (AD) can identify deviations from expected patterns in…

Unsupervised anomaly detection (UAD) alleviates large labeling efforts by training exclusively on unlabeled in-distribution data and detecting outliers as anomalies. Generally, the assumption prevails that large training datasets allow the…

Computer Vision and Pattern Recognition · Computer Science 2024-10-29 Felix Meissen , Johannes Getzner , Alexander Ziller , Özgün Turgut , Georgios Kaissis , Martin J. Menten , Daniel Rueckert

The adoption of connected and automated vehicles (CAVs) has sparked considerable interest across diverse industries, including public transportation, underground mining, and agriculture sectors. However, CAVs' reliance on sensor readings…

Artificial Intelligence · Computer Science 2024-07-09 Md Sazedur Rahman , Mohamed Elmahallawy , Sanjay Madria , Samuel Frimpong

With a long history of traditional Graph Anomaly Detection (GAD) algorithms and recently popular Graph Neural Networks (GNNs), it is still not clear (1) how they perform under a standard comprehensive setting, (2) whether GNNs can…

Machine Learning · Computer Science 2023-11-17 Jianheng Tang , Fengrui Hua , Ziqi Gao , Peilin Zhao , Jia Li

This paper proposed a novel anomaly detection (AD) approach of High-speed Train images based on convolutional neural networks and the Vision Transformer. Different from previous AD works, in which anomalies are identified with a single…

Computer Vision and Pattern Recognition · Computer Science 2022-03-30 Zhixue Wang , Yu Zhang , Lin Luo , Nan Wang

Wind turbine reliability is critical to the growing renewable energy sector, where early fault detection significantly reduces downtime and maintenance costs. This paper introduces a novel ensemble-based deep learning framework for…

Machine Learning · Computer Science 2025-10-20 Rekha R Nair , Tina Babu , Alavikunhu Panthakkan , Balamurugan Balusamy , Wathiq Mansoor

Weakly supervised anomaly detection (WSAD) has developed in three primary directions: incomplete, inexact, and inaccurate supervision. However, these directions remain isolated, lacking a unified framework to assess whether they address…

Machine Learning · Computer Science 2026-05-27 Xu Yao , Siyuan Zhou , Zhenbo Wu , Chaochuan Hou , Shuang Liang , Shiping Wang , Hailiang Huang , Songqiao Han , Minqi Jiang

Businesses are naturally interested in detecting anomalies in their internal processes, because these can be indicators for fraud and inefficiencies. Within the domain of business intelligence, classic anomaly detection is not very…

Artificial Intelligence · Computer Science 2018-05-01 Timo Nolle , Stefan Luettgen , Alexander Seeliger , Max Mühlhäuser

With the recent advances in technology, a wide range of systems continue to collect a large amount of data over time and thus generate time series. Time-Series Anomaly Detection (TSAD) is an important task in various time-series…

Machine Learning · Computer Science 2025-05-01 Thi Kieu Khanh Ho , Ali Karami , Narges Armanfard