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Anomaly detection is a classical but worthwhile problem, and many deep learning-based anomaly detection algorithms have been proposed, which can usually achieve better detection results than traditional methods. In view of reconstruct…

Machine Learning · Computer Science 2020-04-16 Chunkai Zhang , Shaocong Li , Hongye Zhang , Yingyang Chen

Anomaly detection is essential for the safety and reliability of autonomous driving systems. Current methods often focus on detection accuracy but neglect response time, which is critical in time-sensitive driving scenarios. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Dong Xiao , Guangyao Chen , Peixi Peng , Yangru Huang , Yifan Zhao , Yongxing Dai , Yonghong Tian

Continuous efforts are being made to advance anomaly detection in various manufacturing processes to increase the productivity and safety of industrial sites. Deep learning replaced rule-based methods and recently emerged as a promising…

Machine Learning · Computer Science 2024-06-28 Kukjin Choi , Jihun Yi , Jisoo Mok , Sungroh Yoon

Time-series anomaly detectors are commonly compared on workstation-class hardware under unconstrained execution. In-vehicle monitoring, however, requires predictable latency and stable behavior under limited CPU parallelism. Accuracy-only…

Machine Learning · Computer Science 2026-04-28 Kadir-Kaan Özer , René Ebeling , Markus Enzweiler

Despite the prevalence of reconstruction-based deep learning methods, time series anomaly detection remains a tremendous challenge. Existing approaches often struggle with limited temporal contexts, insufficient representation of normal…

Machine Learning · Computer Science 2025-07-16 Zhijie Zhong , Zhiwen Yu , Xing Xi , Yue Xu , Wenming Cao , Yiyuan Yang , Kaixiang Yang , Jane You

Detecting anomalies has been a fundamental approach in detecting potentially fraudulent activities. Tasked with detection of illegal timber trade that threatens ecosystems and economies and association with other illegal activities, we…

Machine Learning · Computer Science 2021-04-05 Debanjan Datta , Sathappan Muthiah , Naren Ramakrishnan

Agentic memory enables LLMs to persist information beyond a single context window and reuse it in later decisions, but it also introduces a new vulnerability: spurious correlations, where retrieved memory carries miscorrelated evidence and…

Machine Learning · Computer Science 2026-05-12 Luoxi Tang , Rupali Rajendra Vaje , Yuqiao Meng , Sakshi Sunil Narkar , Weicheng Ma , Zeyu Ding , Dazheng Zhang , Zhaohan Xi

Detection of anomalous situations for complex mission-critical systems hold paramount importance when their service continuity needs to be ensured. A major challenge in detecting anomalies from the operational data arises due to the…

Machine Learning · Computer Science 2025-05-20 Shanay Mehta , Shlok Mehendale , Nicole Fernandes , Jyotirmoy Sarkar , Santonu Sarkar , Snehanshu Saha

From a safety perspective, a machine learning method embedded in real-world applications is required to distinguish irregular situations. For this reason, there has been a growing interest in the anomaly detection (AD) task. Since we cannot…

Machine Learning · Computer Science 2021-04-21 JuneKyu Park , Jeong-Hyeon Moon , Namhyuk Ahn , Kyung-Ah Sohn

The external visual inspections of rolling stock's underfloor equipment are currently being performed via human visual inspection. In this study, we attempt to partly automate visual inspection by investigating anomaly inspection algorithms…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Yohei Baba , Takuro Hoshi , Ryosuke Mori , Gaurang Gavai

Abnormal event detection is a challenging task that requires effectively handling intricate features of appearance and motion. In this paper, we present an approach of detecting anomalies in videos by learning a novel LSTM based…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Habtamu Fanta , Zhiwen Shao , Lizhuang Ma

Industrial image anomaly detection under the setting of one-class classification has significant practical value. However, most existing models struggle to extract separable feature representations when performing feature embedding and…

Computer Vision and Pattern Recognition · Computer Science 2023-05-02 Minghui Yang , Jing Liu , Zhiwei Yang , Zhaoyang Wu

Anomaly detection aims to detect abnormal events by a model of normality. It plays an important role in many domains such as network intrusion detection, criminal activity identity and so on. With the rapidly growing size of accessible…

Machine Learning · Computer Science 2018-08-02 Chu Wang , Yan-Ming Zhang , Cheng-Lin Liu

We propose a simple mathematical definition and new neural architecture for finding anomalies within discrete sequence datasets. Our model comprises of a modified LSTM autoencoder and an array of One-Class SVMs. The LSTM takes in elements…

Machine Learning · Computer Science 2018-03-08 Chase Roberts , Manish Nair

Effective anomaly detection in time series is pivotal for modern industrial applications and financial systems. Due to the scarcity of anomaly labels and the high cost of manual labeling, reconstruction-based unsupervised approaches have…

Machine Learning · Computer Science 2025-09-25 Tiejun Wang , Rui Wang , Xudong Mou , Mengyuan Ma , Tianyu Wo , Renyu Yang , Xudong Liu

Anomaly detection in multivariate time series (MTS) is hindered by dynamic inter-variable dependencies and feature entanglement under spectral noise, and in practice, is further complicated by the absence of anomaly labels. Existing…

Machine Learning · Computer Science 2026-05-25 Yunhua Pei , Zixing Song , Jin Zheng , John Cartlidge

Reliable confidence estimates are important for safely deploying vision-based controllers in autonomous racing, where safety predictions must be derived from camera images, yet modern predictors become dangerously overconfident under…

Robotics · Computer Science 2026-05-21 Zhenjiang Mao , Jiawen Wu , Gabriel Wagner , Zhongzheng Zhang , Ivan Ruchkin

Ensuring the safe and reliable operation of robotic systems is paramount to prevent potential disasters and safeguard human well-being. Despite rigorous design and engineering practices, these systems can still experience malfunctions,…

Robotics · Computer Science 2025-09-15 Mahfuzul I. Nissan , Sharmin Aktar

Time series anomaly detection is an important task, with applications in a broad variety of domains. Many approaches have been proposed in recent years, but often they require that the length of the anomalies be known in advance and…

Machine Learning · Computer Science 2020-01-31 Yifeng Gao , Jessica Lin , Constantin Brif

There have been significant advancements in anomaly detection in an unsupervised manner, where only normal images are available for training. Several recent methods aim to detect anomalies based on a memory, comparing or reconstructing the…

Computer Vision and Pattern Recognition · Computer Science 2024-07-25 Joo Chan Lee , Taejune Kim , Eunbyung Park , Simon S. Woo , Jong Hwan Ko