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Fault diagnosis is critical in many domains, as faults may lead to safety threats or economic losses. In the field of online service systems, operators rely on enormous monitoring data to detect and mitigate failures. Quickly recognizing a…

Software Engineering · Computer Science 2022-06-14 Mingjie Li , Zeyan Li , Kanglin Yin , Xiaohui Nie , Wenchi Zhang , Kaixin Sui , Dan Pei

Causal analysis on relational databases is challenging, as analysis datasets must be repeatedly queried from complex schemas. Recent LLM systems can automate individual steps, but they hardly manage dependencies across analysis stages,…

Databases · Computer Science 2026-03-19 Joanie Hayoun Chung , Sumin Lee , Sungbin Lim

Root Cause Analysis (RCA) in mobile networks remains a challenging task due to the need for interpretability, domain expertise, and causal reasoning. In this work, we propose a lightweight framework that leverages Large Language Models…

Artificial Intelligence · Computer Science 2025-07-30 Mohamed Sana , Nicola Piovesan , Antonio De Domenico , Yibin Kang , Haozhe Zhang , Merouane Debbah , Fadhel Ayed

Failures in large-scale cloud systems incur substantial financial losses, making automated Root Cause Analysis (RCA) essential for operational stability. Recent efforts leverage Large Language Model (LLM) agents to automate this task, yet…

Artificial Intelligence · Computer Science 2026-03-05 Taeyoon Kim , Woohyeok Park , Hoyeong Yun , Kyungyong Lee

We study distribution-free root cause analysis in multi-stream data, where an evolving underlying system is observed through multiple data streams that may each undergo distributional changes at unknown timepoints. In such settings, the…

Methodology · Statistics 2026-05-22 Rohan Hore , Aaditya Ramdas

Due to the scale and complexity of cloud systems, a system failure would trigger an "alert storm", i.e., massive correlated alerts. Although these alerts can be traced back to a few root causes, the overwhelming number makes it infeasible…

Software Engineering · Computer Science 2024-03-12 Jinxi Kuang , Jinyang Liu , Junjie Huang , Renyi Zhong , Jiazhen Gu , Lan Yu , Rui Tan , Zengyin Yang , Michael R. Lyu

Kubernetes, a notably complex and distributed system, utilizes an array of controllers to uphold cluster management logic through state reconciliation. Nevertheless, maintaining state consistency presents significant challenges due to…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-06-04 Yong Xiang , Charley Peter Chen , Liyi Zeng , Wei Yin , Xin Liu , Hu Li , Wei Xu

For large-scale distributed systems, it's crucial to efficiently diagnose the root causes of incidents to maintain high system availability. The recent development of microservice architecture brings three major challenges (i.e., operation,…

Software Engineering · Computer Science 2021-09-23 Hanzhang Wang , Zhengkai Wu , Huai Jiang , Yichao Huang , Jiamu Wang , Selcuk Kopru , Tao Xie

We introduce PyRCA, an open-source Python machine learning library of Root Cause Analysis (RCA) for Artificial Intelligence for IT Operations (AIOps). It provides a holistic framework to uncover the complicated metric causal dependencies…

Artificial Intelligence · Computer Science 2023-06-21 Chenghao Liu , Wenzhuo Yang , Himanshu Mittal , Manpreet Singh , Doyen Sahoo , Steven C. H. Hoi

Deductive coding is a widely used qualitative research method for determining the prevalence of themes across documents. While useful, deductive coding is often burdensome and time consuming since it requires researchers to read, interpret,…

Computation and Language · Computer Science 2023-06-28 Robert Chew , John Bollenbacher , Michael Wenger , Jessica Speer , Annice Kim

Root Cause Analysis (RCA) is becoming ever more critical as modern systems grow in complexity, volume of data, and interdependencies. While traditional RCA methods frequently rely on correlation-based or rule-based techniques, these…

Artificial Intelligence · Computer Science 2025-03-04 Ahmed Dawoud , Shravan Talupula

Root Cause Analysis (RCA) is essential for pinpointing the root causes of failures in microservice systems. Traditional data-driven RCA methods are typically limited to offline applications due to high computational demands, and existing…

Machine Learning · Computer Science 2025-12-17 Lecheng Zheng , Zhengzhang Chen , Haifeng Chen

Localizing the root cause of network faults is crucial to network operation and maintenance. However, due to the complicated network architectures and wireless environments, as well as limited labeled data, accurately localizing the true…

Machine Learning · Computer Science 2022-03-08 Chaoli Zhang , Zhiqiang Zhou , Yingying Zhang , Linxiao Yang , Kai He , Qingsong Wen , Liang Sun

Effectively localizing root causes of performance anomalies is crucial to enabling the rapid recovery and loss mitigation of microservice applications in the cloud. Depending on the granularity of the causes that can be localized, a service…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-05-09 Ruyue Xin , Peng Chen , Zhiming Zhao

Root cause localization remain challenging in complex and large-scale microservice architectures. The complex fault propagation among microservices and the high dimensionality of telemetry data, including metrics, logs, and traces, limit…

Artificial Intelligence · Computer Science 2026-02-10 Liming Zhou , Ailing Liu , Hongwei Liu , Min He , Heng Zhang

The goal of Root Cause Analysis (RCA) is to explain why an anomaly occurred by identifying where the fault originated. Several recent works model the anomalous event as resulting from a change in the causal mechanism at the root cause,…

The task of root cause analysis (RCA) is to identify the root causes of system faults/failures by analyzing system monitoring data. Efficient RCA can greatly accelerate system failure recovery and mitigate system damages or financial…

Machine Learning · Computer Science 2023-06-06 Dongjie Wang , Zhengzhang Chen , Yanjie Fu , Yanchi Liu , Haifeng Chen

The complex dependencies and propagative faults inherent in microservices, characterized by a dense network of interconnected services, pose significant challenges in identifying the underlying causes of issues. Prompt identification and…

Software Engineering · Computer Science 2024-08-05 Tingting Wang , Guilin Qi

Large Language Models (LLMs) have shown promising results in repository-level code completion, which completes code based on the in-file and cross-file context of a repository. The cross-file context typically contains different types of…

Software Engineering · Computer Science 2026-02-10 Jia Li , Hao Zhu , Huanyu Liu , Xianjie Shi , He Zong , Yihong Dong , Kechi Zhang , Siyuan Jiang , Zhi Jin , Ge Li

Modern applications are built as large, distributed systems spanning numerous modules, teams, and data centers. Despite robust engineering and recovery strategies, failures and performance issues remain inevitable, risking significant…