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Xihang Wang

SIGIR 2026×2检索与知识多模态评测与基准
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2 一作 · 2 篇 · SIGIR 2026

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2026 顶会论文

2
一作SIGIR 2026Oral· Information Retrieval (Full)

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...

检索与知识多模态评测与基准OpenReview
一作SIGIR 2026Poster· Information Retrieval (Short)

MEG-RAG: Quantifying Multi-modal Evidence Grounding for Evidence Selection in RAG

Xihang Wang · Zihan Wang · Chengkai Huang · Quan Z. Sheng · Lina Yao

摘要

Multimodal Retrieval-Augmented Generation (MRAG) addresses key limitations of Multimodal Large Language Models (MLLMs), such as hallucination and outdated knowledge. However, current MRAG systems struggle to distinguish whether retrieved multimodal data truly supports the semantic core of an answ...

检索与知识多模态评测与基准OpenReview

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