Purifying Multimodal Retrieval: Fragment-Level Evidence Selection for RAG
Xihang Wang · Zihan Wang · Chengkai Huang · Cao Liu · Ke Zeng · Quan Z. Sheng · Lina Yao
摘要
Multimodal Retrieval-Augmented Generation (MRAG) is widely adopted for Multimodal Large Language Models (MLLMs) with external evidence to reduce hallucinations. Despite its success, most existing MRAG frameworks treat retrieved evidence as indivisible documents, implicitly assuming that all conte...