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Large language model (LLM) agents often suffer from high reasoning overhead, excessive token consumption, unstable execution, and inability to reuse past experiences in complex tasks like business queries, tool use, and workflow…

Machine Learning · Computer Science 2026-04-23 Ruocan Wei , Shufeng Wang , Ziwei Shi

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…

Machine Learning · Computer Science 2026-02-17 Xiaoyu Tao , Yuchong Wu , Mingyue Cheng , Ze Guo , Tian Gao

Logging is indispensable for maintaining the reliability and diagnosability of modern software, yet developers still struggle to decide where and how to log effectively. Existing automated logging techniques focus on isolated sub-tasks -…

Software Engineering · Computer Science 2025-07-29 Shengcheng Duan , Yihua Xu , Sheng Zhang , Shen Wang , Yue Duan

Anomaly detection in complex industrial environments poses unique challenges, particularly in contexts characterized by data sparsity and evolving operational conditions. Predictive maintenance (PdM) in such settings demands methodologies…

Machine Learning · Computer Science 2025-03-12 Alicia Russell-Gilbert , Sudip Mittal , Shahram Rahimi , Maria Seale , Joseph Jabour , Thomas Arnold , Joshua Church

This paper presents an automated machine learning framework designed to assist hydrologists in detecting anomalies in time series data generated by sensors in a research watershed in the northeastern United States critical zone. The…

Machine Learning · Computer Science 2023-12-07 Ijaz Ul Haq , Byung Suk Lee , Donna M. Rizzo , Julia N Perdrial

Anomaly detection in cloud environments remains both critical and challenging. Existing context-level benchmarks typically focus on either metrics or logs and often lack reliable annotation, while most detection methods emphasize point…

Artificial Intelligence · Computer Science 2025-10-07 Xinkai Zou , Xuan Jiang , Ruikai Huang , Haoze He , Parv Kapoor , Hongrui Wu , Yibo Wang , Jian Sha , Xiongbo Shi , Zixun Huang , Jinhua Zhao

Log analysis is crucial for monitoring system health and diagnosing failures in complex systems. Recent advances in large language models (LLMs) offer new opportunities for automated log analysis, leveraging their reasoning capabilities to…

Artificial Intelligence · Computer Science 2025-09-30 Lipeng Ma , Yixuan Li , Weidong Yang , Mingjie Zhou , Xinyi Liu , Ben Fei , Shuhao Li , Xiaoyan Sun , Sihang Jiang , Yanghua Xiao

Anomalies represent deviations from the intended system operation and can lead to decreased efficiency as well as partial or complete system failure. As the causes of anomalies are often unknown due to complex system dynamics, efficient…

Machine Learning · Computer Science 2021-08-31 Benjamin Lindemann , Benjamin Maschler , Nada Sahlab , Michael Weyrich

Logs are an essential source of information for people to understand the running status of a software system. Due to the evolving modern software architecture and maintenance methods, more research efforts have been devoted to automated log…

Software Engineering · Computer Science 2024-04-09 Xingfang Wu , Heng Li , Foutse Khomh

Detecting anomalies in discrete event logs is critical for ensuring system reliability, security, and efficiency. Traditional window-based methods for log anomaly detection often suffer from context bias and fuzzy localization, which hinder…

Software Engineering · Computer Science 2025-01-22 Jiaxing Qi , Chang Zeng , Zhongzhi Luan , Shaohan Huang , Shu Yang , Yao Lu , Hailong Yang , Depei Qian

The detection of anomalies is essential mining task for the security and reliability in computer systems. Logs are a common and major data source for anomaly detection methods in almost every computer system. They collect a range of…

Machine Learning · Computer Science 2020-08-24 Sasho Nedelkoski , Jasmin Bogatinovski , Alexander Acker , Jorge Cardoso , Odej Kao

In recent years, as smart home systems have become more widespread, security concerns within these environments have become a growing threat. Currently, most smart home security solutions, such as anomaly detection and behavior prediction…

Artificial Intelligence · Computer Science 2025-02-03 Zhiyao Xu , Dan Zhao , Qingsong Zou , Jingyu Xiao , Yong Jiang , Zhenhui Yuan , Qing Li

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 2022-01-19 Hongcheng Guo , Xingyu Lin , Jian Yang , Yi Zhuang , Jiaqi Bai , Tieqiao Zheng , Bo Zhang , Zhoujun Li

Artificial intelligence operations (AIOps) play a pivotal role in identifying, mitigating, and analyzing anomalous system behaviors and alerts. However, the research landscape in this field remains limited, leaving significant gaps…

Machine Learning · Computer Science 2023-12-13 Daksh Dave , Gauransh Sawhney , Dhruv Khut , Sahil Nawale , Pushkar Aggrawal , Prasenjit Bhavathankar

Active learning (AL) has demonstrated remarkable potential in reducing the annotation effort required for training machine learning models. However, despite the surging popularity of natural language generation (NLG) tasks in recent years,…

Network log data analysis plays a critical role in detecting security threats and operational anomalies. Traditional log analysis methods for anomaly detection and root cause analysis rely heavily on expert knowledge or fully supervised…

Networking and Internet Architecture · Computer Science 2025-09-09 Xuanhao Luo , Shivesh Madan Nath Jha , Akruti Sinha , Zhizhen Li , Yuchen Liu

Foundation models, e.g., large language models (LLMs), trained on internet-scale data possess zero-shot generalization capabilities that make them a promising technology towards detecting and mitigating out-of-distribution failure modes of…

Robotics · Computer Science 2024-07-12 Rohan Sinha , Amine Elhafsi , Christopher Agia , Matthew Foutter , Edward Schmerling , Marco Pavone

This paper presents LogiCode, a novel framework that leverages Large Language Models (LLMs) for identifying logical anomalies in industrial settings, moving beyond traditional focus on structural inconsistencies. By harnessing LLMs for…

Machine Learning · Computer Science 2024-06-10 Yiheng Zhang , Yunkang Cao , Xiaohao Xu , Weiming Shen

Predicting human daily behavior is challenging due to the complexity of routine patterns and short-term fluctuations. While data-driven models have improved behavior prediction by leveraging empirical data from various platforms and…

Machine Learning · Computer Science 2025-05-26 Haoxin Li , Jingtao Ding , Jiahui Gong , Yong Li

Log analysis is one of the main techniques engineers use to troubleshoot faults of large-scale software systems. During the past decades, many log analysis approaches have been proposed to detect system anomalies reflected by logs. They…

Software Engineering · Computer Science 2022-09-19 Yongzheng Xie , Hongyu Zhang , Muhammad Ali Babar