Yuchi Ma — accepted AI-conference papers

2026

ArchRAG: Attributed Community-based Hierarchical Retrieval-Augmented Generation

Shu Wang, Yixiang Fang, Yingli Zhou, Xilin Liu, Yuchi Ma

AAAI 2026technical

Retrieval-Augmented Generation (RAG) has proven effective in integrating external knowledge into large language models (LLMs) for solving question-answer (QA) tasks. The state-of-the-art RAG approaches often use the graph data as the external data since they capture the rich semantic information and

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2023

Robust Log-Based Anomaly Detection with Hierarchical Contrastive Learning

Yuhui Zhao, Ruichun Yang, Ning Yang, Tao Lin, Qiuai Fu, Yuchi Ma

ICASSP 2023accepted

Logs are widely employed in modern systems to record critical information and serve as an important source for anomaly detection, which has attracted increasing research interests. However, logs usually suffer from perturbations and it makes the existing log-based anomaly detection methods unstable.…

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