Author

Gao-Lei Li

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#artificial intelligence Preprint Oct 2026

The Attribution Blind Spot: Layerwise Trajectory Diagnostics for Source Reliance in Retrieval-Augmented Language Models

A retrieval-augmented model can match a document without relying on it. Controlled knowledge conflicts make source choice observable and let us ask a second question that prediction alone cannot answer: which internal-state properties define useful intervention directions? We study paired hidden-state changes with Late...

Zhen-Qiang Yu, Wen-Peng Xing, Yun-Zhao Wei et al. · 0 citations

#artificial intelligence Preprint Oct 2026

Relevance Is Not Sufficiency: What Actually Closes the Evidence Gap in Long-Term Memory QA

LLM agents that interact with a user across many sessions accumulate histories that exceed their context window, so they store past interactions in an external memory and answer each question from a small set of retrieved records. Existing memory systems rank records by lexical or embedding relevance, yet the top-ranke...

Yufeng Li, Shu-Xin Li, Zhenhua Xu et al. · 0 citations