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Log-based anomaly detection is a essential task for ensuring the reliability and performance of software systems. However, the performance of existing anomaly detection methods heavily relies on labeling, while labeling a large volume of…

Machine Learning · Computer Science 2025-10-10 Chiming Duan , Minghua He , Pei Xiao , Tong Jia , Xin Zhang , Zhewei Zhong , Xiang Luo , Yan Niu , Lingzhe Zhang , Yifan Wu , Siyu Yu , Weijie Hong , Ying Li , Gang Huang

In the era of rapid Internet development, log data has become indispensable for recording the operations of computer devices and software. These data provide valuable insights into system behavior and necessitate thorough analysis. Recent…

Cryptography and Security · Computer Science 2024-09-19 Caihong Wang , Du Xu , Zonghang Li

Automated log analysis is crucial in modern software-intensive systems for facilitating program comprehension throughout software maintenance and engineering life cycles. Existing methods perform tasks such as log parsing and log anomaly…

Software Engineering · Computer Science 2024-01-29 Yilun Liu , Shimin Tao , Weibin Meng , Jingyu Wang , Wenbing Ma , Yanqing Zhao , Yuhang Chen , Hao Yang , Yanfei Jiang , Xun Chen

During pretraining, LLMs inadvertently memorize sensitive or copyrighted data, posing significant compliance challenges under legal frameworks like the GDPR and the EU AI Act. Fulfilling these mandates demands techniques that can remove…

Machine Learning · Computer Science 2026-03-23 Efstratios Zaradoukas , Bardh Prenkaj , Gjergji Kasneci

Log-based anomaly detection is critical for ensuring the stability and reliability of web systems. One of the key problems in this task is the lack of sufficient labeled logs, which limits the rapid deployment in new systems. Existing works…

Machine Learning · Computer Science 2026-03-27 Xinlong Zhao , Tong Jia , Minghua He , Xixuan Yang , Ying Li

Logs provide users with useful insights to help with a variety of development and operations tasks. The problem is that logs are often unstructured, making their analysis a complex task. This is mainly due to the lack of guidelines and best…

Software Engineering · Computer Science 2021-11-01 Issam Sedki , Abdelwahab Hamou-Lhadj , Otmane Ait-Mohamed

Log anomaly detection using traditional rule based or deep learning based methods is often challenging due to the large volume and highly complex nature of log sequence. So effective way of detection of anomalous sequence of logs is crucial…

Machine Learning · Computer Science 2025-07-16 Isaiah Thompson Ocansey , Ritwik Bhattacharya , Tanmay Sen

To assist IT service developers and operators in managing their increasingly complex service landscapes, there is a growing effort to leverage artificial intelligence in operations. To speed up troubleshooting, log anomaly detection has…

Machine Learning · Computer Science 2024-05-24 Thorsten Wittkopp , Philipp Wiesner , Odej Kao

Log parsing serves as an essential prerequisite for various log analysis tasks. Recent advancements in this field have improved parsing accuracy by leveraging the semantics in logs through fine-tuning large language models (LLMs) or…

Software Engineering · Computer Science 2024-08-09 Junjie Huang , Zhihan Jiang , Zhuangbin Chen , Michael R. Lyu

The rapid progress of modern computing systems has led to a growing interest in informative run-time logs. Various log-based anomaly detection techniques have been proposed to ensure software reliability. However, their implementation in…

Software Engineering · Computer Science 2023-08-21 Yintong Huo , Yichen Li , Yuxin Su , Pinjia He , Zifan Xie , Michael R. Lyu

Log parsing is a critical step that transforms unstructured log data into structured formats, facilitating subsequent log-based analysis. Traditional syntax-based log parsers are efficient and effective, but they often experience decreased…

Software Engineering · Computer Science 2024-11-19 Zeyang Ma , Dong Jae Kim , Tse-Hsun Chen

Software-intensive systems produce logs for troubleshooting purposes. Recently, many deep learning models have been proposed to automatically detect system anomalies based on log data. These models typically claim very high detection…

Software Engineering · Computer Science 2022-02-16 Van-Hoang Le , Hongyu Zhang

Logs constitute a form of evidence signaling the operational status of software systems. Automated log anomaly detection is crucial for ensuring the reliability of modern software systems. However, existing approaches face significant…

Event logs are widely used for anomaly detection and prediction in complex systems. Existing log-based anomaly detection methods usually consist of four main steps: log collection, log parsing, feature extraction, and anomaly detection,…

Machine Learning · Computer Science 2022-12-20 Zhong Li , Matthijs van Leeuwen

Log-based anomaly detection is crucial for ensuring software system stability. However, the scarcity of labeled logs limits rapid deployment to new systems. Cross-system transfer has become an important research direction. State-of-the-art…

Software Engineering · Computer Science 2025-11-11 Xinlong Zhao , Tong Jia , Minghua He , Ying Li

Log anomaly detection is a critical component in modern software system security and maintenance, serving as a crucial support and basis for system monitoring, operation, and troubleshooting. It aids operations personnel in timely…

Software Engineering · Computer Science 2024-07-31 Yingying He , Xiaobing Pei

Log data anomaly detection is a core component in the area of artificial intelligence for IT operations. However, the large amount of existing methods makes it hard to choose the right approach for a specific system. A better understanding…

Databases · Computer Science 2021-11-29 Thorsten Wittkopp , Philipp Wiesner , Dominik Scheinert , Odej Kao

In the evolving IT landscape, stability and reliability of systems are essential, yet their growing complexity challenges DevOps teams in implementation and maintenance. Log analysis, a core element of AIOps, provides critical insights into…

Machine Learning · Computer Science 2025-09-11 Thorsten Wittkopp

Up-to-date and reliable language models are consistently sought after and are essential in various applications. Typically, models are trained on a fixed dataset and then deployed globally. However, the knowledge of the models becomes…

Computation and Language · Computer Science 2025-02-28 Praneeth Vadlapati

Modern software systems generate extensive heterogeneous log data with dynamic formats, fragmented event sequences, and varying temporal patterns, making anomaly detection both crucial and challenging. To address these complexities, we…

Artificial Intelligence · Computer Science 2025-12-17 Przemek Pospieszny , Wojciech Mormul , Karolina Szyndler , Sanjeev Kumar