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Suting Chen

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#machine learning Preprint Sep 2026

Relevance Is Not Sufficient Evidence: Detecting Evidence Gaps Before Generation in RAG

Retrieval-augmented generation (RAG) grounds large language models in external sources, but retrieved passages often name the right entities without providing the facts needed to answer. Even when instructed to abstain, 12 generators answer 40.0-99.3% of insufficient-evidence questions. Training generators to abstain t...

Su-Ting Chen, Pei-Chun Hua, Yun-Ming Xiao · 0 citations

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This paper presents PreAcher, a system architecture that incorporates third-party Content Delivery Networks (CDNs) into the password authentication process and offloads the authentication workload to CDNs without divulging the passwords to them.

Shihan Lin, Yunming Xiao, Aleksandar Kuzmanovic et al. · 0 citations

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