Author

Sheng Xu

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Preprint Aug 2026

Doc-REFRAG: Rethinking Multimodal Document Retrieval-Augmented Generation

Doc-REFRAG, a question-guided framework that compresses visual tokens into coarse chunks and selectively expands question-relevant ones via a lightweight RL-based selector, is proposed, achieving state-of-the-art accuracy with significantly lower inference latency.

Ruofan Hu, Sheng Xu, Minjie Hong et al. · 0 citations