Graph of States: Solving Abductive Tasks with Large Language Models

Yu Luo, Rongchen Gao, Lu Teng, et al.

• Graph of States is a general-purpose neuro-symbolic framework for abductive reasoning that grounds multi-agent collaboration in structured belief states, uses a causal graph and state machine to constrain reasoning transitions, and turns unconstrained exploration into a directed search that consistently improves performance on complex real-world abductive tasks.

OpsAgent: An Evolving Multi-agent System for Incident Management in Microservices

Yu Luo, Jiamin Jiang, Jingfei Feng, et al.

• OpsAgent is a lightweight and self-evolving multi-agent framework for incident management that transforms heterogeneous observability data into structured textual evidence, coordinates specialized agents for transparent diagnosis, and continuously improves through both model refinement and accumulated operational experience.

KRCA: An Efficient Root Cause Analysis System in Hyper-Scale Microservice Systems via Agentic AI

Jiamin Jiang, Jingfei Feng, Yu Luo, Qingliang Zhang, et al.

• KRCA is an end-to-end root cause analysis system for hyper-scale microservice systems that uses API-level drilldown to prune massive service dependencies, instantiates skeleton-based causal graphs from anomalous metrics, and coordinates memory-augmented agents to verify causality and generate failure reports. Evaluated on 300 real-world failures and deployed at Kuaishou, it improves root-cause localization and failure-type classification while reducing average diagnosis time by 77.3%.

TrioXpert: An Automated Incident Management Framework for Microservice System

Yongqian Sun, Yu Luo, Xidao Wen*, Yuan Yuan, et al.

• TrioXpert is an end-to-end framework for incident management in microservice systems that leverages multimodal data and LLM-based collaborative reasoning to handle AD, FT, and RCL tasks with high interpretability. It significantly outperforms baselines across multiple benchmarks.

Adaptive Performance Regression Detection via Semi-Supervised Siamese Learning

Yongqian Sun, Mengyao Li, Xiao Xiong, Lei Tao, Yimin Zuo, Wenwei Gu, Shenglin Zhang*, Junhua Kuang, Yu Luo, et al.

• DynamicRegress is an adaptive performance regression detection framework that jointly models multi-dimensional KPIs and workload context with a semi-supervised Siamese LSTM, enabling accurate comparison of variable-length traces under dynamic loads. Deployed on Huawei Cloud, it achieves an F1 score of 0.958 with real-time detection latency.

Predicting the Impact of Parameter Adjustments on Cellular Networks

Yongqian Sun, Qingliang Zhang, Yu Luo, Mingjie Li*, et al.

• PIPCell is a two-phase predictive framework for estimating how transmission power and cell individual offset adjustments affect cellular network metrics, combining domain-knowledge calibration with graph-organized Transformers to model intervention effects and inter-metric dependencies. On real-world China Mobile data, it improves over strong baselines by up to 25.8% in RMSE and 59.0% in sMAPE.

FlowXpert: Expertizing Troubleshooting Workflow Orchestration with Knowledge Base and Multi-Agent Coevolution

Binpeng Shi, Yu Luo, Jingya Wang, Yongxin Zhao, et al.

• FlowXpert is a troubleshooting workflow orchestration framework that uses LLMs to build an incident-aware knowledge base and applies reinforcement learning with AI feedback to improve workflow generation. Evaluated on OpsFlowBench and deployed in Huawei Cloud’s datacenter, it demonstrated effectiveness in supporting engineers and AI agents.