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mR²AG: Multimodal Retrieval-Reflection-Augmented Generation for Knowledge-Based VQA

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arxiv 2411.15041 v1 pith:NC3XXKTQ submitted 2024-11-22 cs.AI cs.CL

mR²AG: Multimodal Retrieval-Reflection-Augmented Generation for Knowledge-Based VQA

classification cs.AI cs.CL
keywords mllmstextbfknowledgemultimodalretrievalanswerscomplexityencyclopedic-vqa
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Advanced Multimodal Large Language Models (MLLMs) struggle with recent Knowledge-based VQA tasks, such as INFOSEEK and Encyclopedic-VQA, due to their limited and frozen knowledge scope, often leading to ambiguous and inaccurate responses. Thus, multimodal Retrieval-Augmented Generation (mRAG) is naturally introduced to provide MLLMs with comprehensive and up-to-date knowledge, effectively expanding the knowledge scope. However, current mRAG methods have inherent drawbacks, including: 1) Performing retrieval even when external knowledge is not needed. 2) Lacking of identification of evidence that supports the query. 3) Increasing model complexity due to additional information filtering modules or rules. To address these shortcomings, we propose a novel generalized framework called \textbf{m}ultimodal \textbf{R}etrieval-\textbf{R}eflection-\textbf{A}ugmented \textbf{G}eneration (mR$^2$AG), which achieves adaptive retrieval and useful information localization to enable answers through two easy-to-implement reflection operations, preventing high model complexity. In mR$^2$AG, Retrieval-Reflection is designed to distinguish different user queries and avoids redundant retrieval calls, and Relevance-Reflection is introduced to guide the MLLM in locating beneficial evidence of the retrieved content and generating answers accordingly. In addition, mR$^2$AG can be integrated into any well-trained MLLM with efficient fine-tuning on the proposed mR$^2$AG Instruction-Tuning dataset (mR$^2$AG-IT). mR$^2$AG significantly outperforms state-of-the-art MLLMs (e.g., GPT-4v/o) and RAG-based MLLMs on INFOSEEK and Encyclopedic-VQA, while maintaining the exceptional capabilities of base MLLMs across a wide range of Visual-dependent tasks.

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Forward citations

Cited by 8 Pith papers

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

  1. mKG-RAG: Leveraging Multimodal Knowledge Graphs in Retrieval-Augmented Generation for Knowledge-intensive VQA

    cs.CV 2025-08 unverdicted novelty 7.0

    mKG-RAG constructs multimodal KGs via MLLM-driven extraction and vision-text matching then applies dual-stage query-aware retrieval to achieve new state-of-the-art results on knowledge-based VQA.

  2. MMAgent-R$^2$: Learning to Rerank and Reject for Agentic mRAG

    cs.CV 2026-07 conditional novelty 6.0

    An agentic mRAG framework uses GRPO-trained visual reranking and active rejection to verify retrieved candidate entities, achieving state-of-the-art on three KB-VQA benchmarks.

  3. 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.

  4. WikiSeeker: Rethinking the Role of Vision-Language Models in Knowledge-Based Visual Question Answering

    cs.CV 2026-04 unverdicted novelty 6.0

    WikiSeeker boosts KB-VQA performance by using VLMs to rewrite image-informed queries for better retrieval and to decide when to route to external LLM or rely on internal VLM knowledge.

  5. 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.

  6. Progressive Multimodal Search and Reasoning for Knowledge-Intensive Visual Question Answering

    cs.CV 2025-08 unverdicted novelty 6.0

    PMSR progressively constructs structured reasoning trajectories with dual-scope queries and compositional reasoning to improve knowledge acquisition and answer accuracy in knowledge-intensive VQA.

  7. Mixture-of-Retrieval Experts for Reasoning-Guided Multimodal Knowledge Exploitation

    cs.CL 2025-05 unverdicted novelty 6.0

    MoRE enables MLLMs to dynamically coordinate heterogeneous retrieval experts via Step-GRPO training, yielding over 7% average gains on open-domain QA benchmarks.

  8. CogniVerse: Revolutionizing Multi-Modal Retrieval-Augmented Generation with Cognitive Reflection and Geometric Reasoning

    cs.CV 2026-05 unverdicted novelty 3.0

    CogniVerse is a proposed MMRAG framework that combines cognitive reflection for retrieval filtering, Riemannian manifold alignment plus spectral graphs for retrieval, and optimal transport loss for generation, claimin...