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The spread of a resource-constrained Internet of Things (IoT) environment and embedded devices has put pressure on the real-time detection of anomalies occurring at the edge. This survey presents an overview of machine-learning methods…

机器学习 · 计算机科学 2025-12-23 Abdelmadjid Benmachiche , Khadija Rais , Hamda Slimi

We develop an anomaly-detection method when systematic anomalies, possibly statistically very similar to genuine inputs, are affecting control systems at the input and/or output stages. The method allows anomaly-free inputs (i.e., those…

统计方法学 · 统计学 2022-02-01 Ning Sun , Chen Yang , Ričardas Zitikis

The recently proposed xLSTM is a powerful model that leverages expressive multiplicative gating and residual connections, providing the temporal capacity needed for long-horizon forecasting and representation learning. This architecture has…

机器学习 · 计算机科学 2026-03-03 Kamil Faber , Marcin Pietroń , Dominik Żurek , Roberto Corizzo

Anomaly detection (AD) plays a crucial role in time series applications, primarily because time series data is employed across real-world scenarios. Detecting anomalies poses significant challenges since anomalies take diverse forms making…

机器学习 · 计算机科学 2025-01-03 Jihan Ghanim , Mariette Awad

Google uses continuous streams of data from industry partners in order to deliver accurate results to users. Unexpected drops in traffic can be an indication of an underlying issue and may be an early warning that remedial action may be…

机器学习 · 统计学 2017-08-15 Dominique T. Shipmon , Jason M. Gurevitch , Paolo M. Piselli , Stephen T. Edwards

Organizations leverage anomaly and changepoint detection algorithms to detect changes in user behavior or service availability and performance. Many off-the-shelf detection algorithms, though effective, cannot readily be used in large…

机器学习 · 计算机科学 2022-05-25 Sourav Chatterjee , Rohan Bopardikar , Marius Guerard , Uttam Thakore , Xiaodong Jiang

Anomaly detection is concerned with identifying data patterns that deviate remarkably from the expected behaviour. This is an important research problem, due to its broad set of application domains, from data analysis to e-health,…

机器学习 · 计算机科学 2021-08-23 L. Erhan , M. Ndubuaku , M. Di Mauro , W. Song , M. Chen , G. Fortino , O. Bagdasar , A. Liotta

Detecting system anomalies based on log data is important for ensuring the security and reliability of computer systems. Recently, deep learning models have been widely used for log anomaly detection. The core idea is to model the log…

机器学习 · 计算机科学 2023-12-12 Xiao Han , Shuhan Yuan , Mohamed Trabelsi

Time series anomaly detection (TSAD) plays a crucial role in various industries by identifying atypical patterns that deviate from standard trends, thereby maintaining system integrity and enabling prompt response measures. Traditional TSAD…

计算与语言 · 计算机科学 2024-05-27 Jun Liu , Chaoyun Zhang , Jiaxu Qian , Minghua Ma , Si Qin , Chetan Bansal , Qingwei Lin , Saravan Rajmohan , Dongmei Zhang

Detecting anomalies in real-world multivariate time series data is challenging due to complex temporal dependencies and inter-variable correlations. Recently, reconstruction-based deep models have been widely used to solve the problem.…

机器学习 · 计算机科学 2023-12-06 Junho Song , Keonwoo Kim , Jeonglyul Oh , Sungzoon Cho

Time series anomaly detection is critical in many real-world applications, where effective solutions must localize anomalous regions and support reliable decision-making under complex settings. However, most existing methods frame anomaly…

机器学习 · 计算机科学 2026-02-17 Xiaoyu Tao , Yuchong Wu , Mingyue Cheng , Ze Guo , Tian Gao

The research in anomaly detection lacks a unified definition of what represents an anomalous instance. Discrepancies in the nature itself of an anomaly lead to multiple paradigms of algorithms design and experimentation. Predictive…

Large Language Models (LLMs) have gained popularity in time series forecasting, but their potential for anomaly detection remains largely unexplored. Our study investigates whether LLMs can understand and detect anomalies in time series…

机器学习 · 计算机科学 2025-03-13 Zihao Zhou , Rose Yu

Video anomaly detection is a challenging task because most anomalies are scarce and non-deterministic. Many approaches investigate the reconstruction difference between normal and abnormal patterns, but neglect that anomalies do not…

计算机视觉与模式识别 · 计算机科学 2022-06-28 Guodong Shen , Yuqi Ouyang , Victor Sanchez

Detecting anomalies in time series data is a challenging task with broad relevance in many applications. Existing methods work effectively only under idealized conditions, typically focusing on point anomalies or assuming a constant…

统计方法学 · 统计学 2025-09-01 Yiyin Zhang , Florian Pein , Idris Eckley

Anomaly detection in database management systems (DBMSs) is difficult because of increasing number of statistics (stat) and event metrics in big data system. In this paper, I propose an automatic DBMS diagnosis system that detects anomaly…

机器学习 · 统计学 2018-01-26 Doyup Lee

We address the problem of anomaly detection, that is, detecting anomalous events in a video sequence. Anomaly detection methods based on convolutional neural networks (CNNs) typically leverage proxy tasks, such as reconstructing input video…

计算机视觉与模式识别 · 计算机科学 2020-03-31 Hyunjong Park , Jongyoun Noh , Bumsub Ham

This work presents a Long Short-Term Memory (LSTM) network for forecasting a monthly electricity demand time series with a one-year horizon. The novelty of this work is the use of pattern representation of the seasonal time series as an…

信号处理 · 电气工程与系统科学 2020-04-29 Paweł Pełka , Grzegorz Dudek

Anomaly is defined as a state of the system that do not conform to the normal behavior. For example, the emission of neutrons in a nuclear reactor channel above the specified threshold is an anomaly. Big data refers to the data set that is…

机器学习 · 计算机科学 2022-03-04 Chandresh Kumar Maurya

Fault detection is a key challenge in the management of complex systems. In the context of SparkCognition's efforts towards predictive maintenance in large scale industrial systems, this problem is often framed in terms of anomaly detection…

机器学习 · 计算机科学 2024-05-29 Elad Liebman