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CoRe-MMRAG: Cross-Source Knowledge Reconciliation for Multimodal RAG

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arxiv 2506.02544 v2 pith:ZETC5DU7 submitted 2025-06-03 cs.CL cs.AIcs.IR

CoRe-MMRAG: Cross-Source Knowledge Reconciliation for Multimodal RAG

classification cs.CL cs.AIcs.IR
keywords knowledgemultimodalcore-mmraganswerchallengescross-sourcegeneratesgeneration
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Multimodal Retrieval-Augmented Generation (MMRAG) has been introduced to enhance Multimodal Large Language Models by incorporating externally retrieved multimodal knowledge, but it introduces two challenges: Parametric-Retrieved Knowledge Inconsistency (PRKI), where discrepancies between parametric and retrieved knowledge create uncertainty in determining reliability, and Visual-Textual Knowledge Inconsistency (VTKI), where misalignment between visual and textual sources disrupts entity representation. To address these challenges, we propose Cross-source knowledge \textbf{Re}conciliation for Multimodal RAG (CoRe-MMRAG), a novel end-to-end framework that effectively reconciles inconsistencies across knowledge sources. CoRe-MMRAG follows a four-stage pipeline: it first generates an internal response from parametric knowledge, then selects the most relevant multimodal evidence via joint similarity assessment, generates an external response, and finally integrates both to produce a reliable answer. Additionally, a specialized training paradigm enhances knowledge source discrimination, multimodal integration, and unified answer generation. Experiments on KB-VQA benchmarks show that CoRe-MMRAG achieves substantial improvements over baseline methods, achieving 5.6% and 9.3% performance gains on InfoSeek and Encyclopedic-VQA, respectively.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Identifying and Resolving Pitfalls of Knowledge-Based VQA Benchmarks: Auditing, Repairing, and Augmenting

    cs.CL 2026-06 unverdicted novelty 6.0

    Audit of KB-VQA benchmarks reveals systematic violations of answer derivability, question clarity, and visual disambiguation assumptions, with new repair and multi-entity augmentation protocols producing different mod...

  2. Ground Then Rank: Revisiting Knowledge-Based VQA with Training-Free Entity Identification

    cs.CL 2026-06 unverdicted novelty 6.0

    A decoupled training-free IBA framework for KB-VQA selects entities via MLLM candidate choice then ranks evidence with off-the-shelf re-rankers, outperforming coupled fine-tuned baselines on Encyclopedic-VQA and InfoSeek.

  3. R3G: A Reasoning-Retrieval-Reranking Framework for Vision-Centric Answer Generation

    cs.CV 2026-01 unverdicted novelty 6.0

    R3G improves vision-centric visual question answering by generating reasoning plans to guide two-stage image retrieval and reranking, achieving state-of-the-art results on MRAG-Bench across six MLLM backbones.

  4. QKVQA: Question-Focused Filtering for Knowledge-based VQA

    cs.IR 2026-01 unverdicted novelty 6.0

    QKVQA proposes a question-focused filtering method with QFF and CDA modules that boosts accuracy by 3.2 points on Encyclopedic-VQA and 2.2 points on InfoSeek over prior state-of-the-art.

  5. Reason Before You Retrieve: Agentic Planning for Multi-modal RAG

    cs.AI 2026-06 reject novelty 5.0

    MM-R2 claims SOTA multimodal RAG accuracy on InfoSeek and Encyclopedic VQA via intent grounding plus a 10-topic KnowledgeMap, but its teacher trajectories leak the gold Wikipedia page and omit the image.

  6. R3G: A Reasoning-Retrieval-Reranking Framework for Vision-Centric Answer Generation

    cs.CV 2026-01 conditional novelty 5.0

    R3G improves vision-centric VQA by generating a reasoning plan before retrieval and reranking candidate images with an MLLM judge on relevance, target match, and answerability.