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Software systems often record important runtime information in logs to help with troubleshooting. Log-based anomaly detection has become a key research area that aims to identify system issues through log data, ultimately enhancing the…

Software Engineering · Computer Science 2025-04-15 Wei Guan , Jian Cao , Shiyou Qian , Jianqi Gao , Chun Ouyang

System logs are some of the most important information for the maintenance of software systems, which have become larger and more complex in recent years. The goal of log-based anomaly detection is to automatically detect system anomalies…

Machine Learning · Computer Science 2024-02-19 Yuuki Yamanaka , Tomokatsu Takahashi , Takuya Minami , Yoshiaki Nakajima

System log anomaly detection is critical for maintaining the reliability of large-scale software systems, yet traditional methods struggle with the heterogeneous and evolving nature of modern log data. Recent advances in Large Language…

Machine Learning · Computer Science 2026-04-15 Disha Patel

Due to the complexity of modern IT services, failures can be manifold, occur at any stage, and are hard to detect. For this reason, anomaly detection applied to monitoring data such as logs allows gaining relevant insights to improve IT…

Machine Learning · Computer Science 2023-01-26 Thorsten Wittkopp , Dominik Scheinert , Philipp Wiesner , Alexander Acker , Odej Kao

As software systems grow increasingly intricate, the precise detection of anomalies have become both essential and challenging. Current log-based anomaly detection methods depend heavily on vast amounts of log data leading to inefficient…

Software Engineering · Computer Science 2024-09-17 Lingzhe Zhang , Tong Jia , Kangjin Wang , Mengxi Jia , Yang Yong , Ying Li

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…

Machine Learning · Computer Science 2023-12-12 Xiao Han , Shuhan Yuan , Mohamed Trabelsi

Log-based anomaly detection is fundamentally constrained by training data sparsity. Our empirical study reveals that public benchmark datasets cover less than 10% of source code log templates. Consequently, models frequently misclassify…

Software Engineering · Computer Science 2026-04-14 Xinyu Li , Yintong Huo , Chenxi Mao , Shiwen Shan , Yuxin Su , Yanlin Wang , Zibin Zheng

Automatic log file analysis enables early detection of relevant incidents such as system failures. In particular, self-learning anomaly detection techniques capture patterns in log data and subsequently report unexpected log event…

Machine Learning · Computer Science 2023-05-16 Max Landauer , Sebastian Onder , Florian Skopik , Markus Wurzenberger

As the IT industry advances, system log data becomes increasingly crucial. Many computer systems rely on log texts for management due to restricted access to source code. The need for log anomaly detection is growing, especially in…

Machine Learning · Computer Science 2023-11-10 Gunho No , Yukyung Lee , Hyeongwon Kang , Pilsung Kang

Log-based anomaly detection (LogAD) is critical for maintaining the reliability and availability of large-scale online service systems. While machine learning, deep learning, and large language models (LLMs)-based methods have advanced the…

Software Engineering · Computer Science 2025-10-28 Junjie Huang , Minghua He , Jinyang Liu , Yintong Huo , Domenico Bianculli , Michael R. Lyu

Time series anomaly detection is critical for supply chain management to take proactive operations, but faces challenges: classical unsupervised anomaly detection based on exploiting data patterns often yields results misaligned with…

Machine Learning · Computer Science 2026-01-28 Haoting Zhang , Shekhar Jain

System logs are a critical resource for monitoring and managing distributed systems, providing insights into failures and anomalous behavior. Traditional log analysis techniques, including template-based and sequence-driven approaches,…

Artificial Intelligence · Computer Science 2025-12-16 Anfeng Peng , Ajesh Koyatan Chathoth , Stephen Lee

The scarcity of high-quality public log datasets has become a critical bottleneck in advancing log-based anomaly detection techniques. Current datasets exhibit three fundamental limitations: (1) incomplete event coverage, (2) artificial…

Software Engineering · Computer Science 2025-04-17 Xinyu Li , Yingtong Huo , Chenxi Mao , Shiwen Shan , Yuxin Su , Dan Li , Zibin Zheng

Most enterprise applications use logging as a mechanism to diagnose anomalies, which could help with reducing system downtime. Anomaly detection using software execution logs has been explored in several prior studies, using both classical…

Machine Learning · Computer Science 2023-11-01 Nadun Wijesinghe , Hadi Hemmati

Anomalies or failures in large computer systems, such as the cloud, have an impact on a large number of users that communicate, compute, and store information. Therefore, timely and accurate anomaly detection is necessary for reliability,…

Artificial Intelligence · Computer Science 2021-02-24 Harold Ott , Jasmin Bogatinovski , Alexander Acker , Sasho Nedelkoski , Odej Kao

Log anomaly detection is essential for system reliability, but it is extremely challenging to do considering it involves class imbalance. Additionally, the models trained in one domain are not applicable to other domains, necessitating the…

Machine Learning · Computer Science 2026-01-22 Krishna Sharma , Vivek Yelleti

Logs are ubiquitous digital footprints, playing an indispensable role in system diagnostics, security analysis, and performance optimization. The extraction of actionable insights from logs is critically dependent on the log parsing…

Software Engineering · Computer Science 2024-08-27 Aoxiao Zhong , Dengyao Mo , Guiyang Liu , Jinbu Liu , Qingda Lu , Qi Zhou , Jiesheng Wu , Quanzheng Li , Qingsong Wen

Software systems log massive amounts of data, recording important runtime information. Such logs are used, for example, for log-based anomaly detection, which aims to automatically detect abnormal behaviors of the system under analysis by…

Software Engineering · Computer Science 2024-08-20 Zanis Ali Khan , Donghwan Shin , Domenico Bianculli , Lionel Briand

Log anomaly detection is a key component in the field of artificial intelligence for IT operations (AIOps). Considering log data of variant domains, retraining the whole network for unknown domains is inefficient in real industrial…

Machine Learning · Computer Science 2024-01-11 Hongcheng Guo , Jian Yang , Jiaheng Liu , Jiaqi Bai , Boyang Wang , Zhoujun Li , Tieqiao Zheng , Bo Zhang , Junran peng , Qi Tian

With the increasing prevalence of scalable file systems in the context of High Performance Computing (HPC), the importance of accurate anomaly detection on runtime logs is increasing. But as it currently stands, many state-of-the-art…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-01-20 Chris Egersdoerfer , Dong Dai , Di Zhang
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