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Li-Xiang Zhu

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Conference 2026

DARE-RAG: Difficulty-Aware Retrieval Expansion for Retrieval-Augmented Generation

DARE-RAG is proposed, an adaptive retrieval framework that activates LLM-based query expansion only for retrieval-challenging queries, and formulates expansion activation as a lightweight binary classification problem using probe retrieval signals, including score margin, variance, entropy, query length, and lexical specificity.

Li-Xiang Zhu · 0 citations

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