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Anomaly detection in time series is a complex task that has been widely studied. In recent years, the ability of unsupervised anomaly detection algorithms has received much attention. This trend has led researchers to compare only…

Machine Learning · Computer Science 2022-09-13 Julien Audibert , Pietro Michiardi , Frédéric Guyard , Sébastien Marti , Maria A. Zuluaga

This paper showcases an experimental study on anomaly detection using computer vision. The study focuses on class distinction and performance evaluation, combining OpenCV with deep learning techniques while employing a TensorFlow-based…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Md. Barkat Ullah Tusher , Shartaz Khan Akash , Amirul Islam Showmik

Tabular anomaly detection under the one-class classification setting poses a significant challenge, as it involves accurately conceptualizing "normal" derived exclusively from a single category to discern anomalies from normal data…

Machine Learning · Computer Science 2024-12-18 Jianan Ye , Zhaorui Tan , Yijie Hu , Xi Yang , Guangliang Cheng , Kaizhu Huang

Deployment, operation and maintenance of large IT systems becomes increasingly complex and puts human experts under extreme stress when problems occur. Therefore, utilization of machine learning (ML) and artificial intelligence (AI) is…

Machine Learning · Computer Science 2021-07-30 Dominik Scheinert , Alexander Acker

In this paper, we attack the anomaly detection problem by directly modeling the data distribution with deep architectures. We propose deep structured energy based models (DSEBMs), where the energy function is the output of a deterministic…

Machine Learning · Computer Science 2016-06-17 Shuangfei Zhai , Yu Cheng , Weining Lu , Zhongfei Zhang

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

Advances in deep neural networks (DNN) greatly bolster real-time detection of anomalous IoT data. However, IoT devices can barely afford complex DNN models due to limited computational power and energy supply. While one can offload anomaly…

Machine Learning · Computer Science 2020-01-13 Mao V. Ngo , Hakima Chaouchi , Tie Luo , Tony Q. S. Quek

Analyzing the distribution shift of data is a growing research direction in nowadays Machine Learning (ML), leading to emerging new benchmarks that focus on providing a suitable scenario for studying the generalization properties of ML…

Machine Learning · Computer Science 2023-04-04 Marius Dragoi , Elena Burceanu , Emanuela Haller , Andrei Manolache , Florin Brad

To effectively address the issues of low sensitivity and high time consumption in time series anomaly detection, we propose an anomaly detection method based on cross-modal deep metric learning. A cross-modal deep metric learning feature…

Machine Learning · Computer Science 2025-09-17 Wei Li , Zheze Yang

With the widespread adoption of cloud services, especially the extensive deployment of plenty of Web applications, it is important and challenging to detect anomalies from the packet payload. For example, the anomalies in the packet payload…

Signal Processing · Electrical Eng. & Systems 2021-05-20 Jiaxin Liu , Xucheng Song , Yingjie Zhou , Xi Peng , Yanru Zhang , Pei Liu , Dapeng Wu

The integration of IoT devices in healthcare introduces significant security and reliability challenges, increasing susceptibility to cyber threats and operational anomalies. This study proposes a machine learning-driven framework for (1)…

Machine Learning · Computer Science 2025-11-06 Mahek Desai , Apoorva Rumale , Marjan Asadinia

Cloud systems are susceptible to performance issues, which may cause service-level agreement violations and financial losses. In current practice, crucial metrics are monitored periodically to provide insight into the operational status of…

Machine Learning · Computer Science 2024-11-08 Wenwei Gu , Jinyang Liu , Zhuangbin Chen , Jianping Zhang , Yuxin Su , Jiazhen Gu , Cong Feng , Zengyin Yang , Yongqiang Yang , Michael Lyu

Anomaly detection is vital in many domains, such as finance, healthcare, and cybersecurity. In this paper, we propose a novel deep anomaly detection method for tabular data that leverages Non-Parametric Transformers (NPTs), a model…

Machine Learning · Computer Science 2024-05-03 Hugo Thimonier , Fabrice Popineau , Arpad Rimmel , Bich-Liên Doan

Advancements in deep learning have improved anomaly detection in surveillance videos, yet they raise urgent privacy concerns due to the collection of sensitive human data. In this paper, we present a comprehensive analysis of anomaly…

Computer Vision and Pattern Recognition · Computer Science 2025-07-21 Sara Abdulaziz , Egor Bondarev

Time series anomaly detection is extensively studied in statistics, economics, and computer science. Over the years, numerous methods have been proposed for time series anomaly detection using deep learning-based methods. Many of these…

Machine Learning · Computer Science 2022-08-25 Shahroz Tariq , Binh M. Le , Simon S. Woo

In many real-world AD applications including computer security and fraud prevention, the anomaly detector must be configurable by the human analyst to minimize the effort on false positives. One important way to configure the detector is by…

Machine Learning · Computer Science 2024-05-15 Shubhomoy Das , Md Rakibul Islam , Nitthilan Kannappan Jayakodi , Janardhan Rao Doppa

The increasing digitization of smart grids has made addressing cybersecurity issues crucial in order to secure the power supply. Anomaly detection has emerged as a key technology for cybersecurity in smart grids, enabling the detection of…

Cryptography and Security · Computer Science 2023-12-22 Ömer Sen , Simon Glomb , Martin Henze , Andreas Ulbig

The emergence of federated learning (FL) presents a promising approach to leverage decentralized data while preserving privacy. Furthermore, the combination of FL and anomaly detection is particularly compelling because it allows for…

Machine Learning · Computer Science 2024-08-09 Ahmed Anwar , Brian Moser , Dayananda Herurkar , Federico Raue , Vinit Hegiste , Tatjana Legler , Andreas Dengel

The continued digitization of societal processes translates into a proliferation of time series data that cover applications such as fraud detection, intrusion detection, and energy management, where anomaly detection is often essential to…

Anomaly detection in multivariate time series is an important problem across various fields such as healthcare, financial services, manufacturing or physics detector monitoring. Accurately identifying when unexpected errors or faults occur…

Machine Learning · Computer Science 2025-06-26 Laura Boggia , Rafael Teixeira de Lima , Bogdan Malaescu