Author

Rui-Yi Yang

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#artificial intelligence May 2025

Divide by Question, Conquer by Agent: SPLIT-RAG with Question-Driven Graph Partitioning

Retrieval-Augmented Generation (RAG) systems empower large language models (LLMs) with external knowledge, yet struggle with efficiency-accuracy trade-offs when scaling to large knowledge graphs. Existing approaches often rely on monolithic graph retrieval, incurring unnecessary latency for simple queries and fragmente...

Rui-Yi Yang, Hao Xue, Imran Razzak et al. · arXiv.org · 4 citations

#artificial intelligence Preprint Aug 2026

GuardianAgent: Policy-Conditioned Risk-Adaptive Anonymization with Verified Adversarial Escalation

GuardianAgent, a policy-conditioned anonymization framework that couples structured risk assessment with verified adaptive rewriting, achieves the strongest privacy-utility trade-off among published baselines and is the only method to reach more than 0.90 privacy in all three domains, remaining robust under a backbone...

Rui-Yi Yang, Gayathri Lihinikaduarachchi, Rahat Masood et al. · 0 citations