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Explainable and Interpretable Multimodal Large Language Models: A Comprehensive Survey

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arxiv 2412.02104 v1 pith:VBYH3THJ submitted 2024-12-03 cs.CL

Explainable and Interpretable Multimodal Large Language Models: A Comprehensive Survey

classification cs.CL
keywords multimodalinterpretabilitylanguagemllmsexplainabilitylargemodelssurvey
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The rapid development of Artificial Intelligence (AI) has revolutionized numerous fields, with large language models (LLMs) and computer vision (CV) systems driving advancements in natural language understanding and visual processing, respectively. The convergence of these technologies has catalyzed the rise of multimodal AI, enabling richer, cross-modal understanding that spans text, vision, audio, and video modalities. Multimodal large language models (MLLMs), in particular, have emerged as a powerful framework, demonstrating impressive capabilities in tasks like image-text generation, visual question answering, and cross-modal retrieval. Despite these advancements, the complexity and scale of MLLMs introduce significant challenges in interpretability and explainability, essential for establishing transparency, trustworthiness, and reliability in high-stakes applications. This paper provides a comprehensive survey on the interpretability and explainability of MLLMs, proposing a novel framework that categorizes existing research across three perspectives: (I) Data, (II) Model, (III) Training \& Inference. We systematically analyze interpretability from token-level to embedding-level representations, assess approaches related to both architecture analysis and design, and explore training and inference strategies that enhance transparency. By comparing various methodologies, we identify their strengths and limitations and propose future research directions to address unresolved challenges in multimodal explainability. This survey offers a foundational resource for advancing interpretability and transparency in MLLMs, guiding researchers and practitioners toward developing more accountable and robust multimodal AI systems.

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Cited by 13 Pith papers

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

  1. ProjLens: Unveiling the Role of Projectors in Multimodal Model Safety

    cs.CR 2026-04 unverdicted novelty 7.0

    ProjLens shows that backdoor parameters in MLLMs are encoded in low-rank subspaces of the projector and that embeddings shift toward the target direction with magnitude linear in input norm, activating only on poisone...

  2. Which Modality Decides? Counterfactual Modality Attribution for Multimodal LLMs

    cs.CV 2026-07 conditional novelty 6.0

    CMA uses diffusion-generated counterfactuals and two-player Shapley values to measure whether an image or the text drives a multimodal LLM's prediction, hitting 98% on synthetic biased benchmarks.

  3. Which Modality Decides? Counterfactual Modality Attribution for Multimodal LLMs

    cs.CV 2026-07 conditional novelty 6.0

    CMA uses diffusion-based counterfactuals and Shapley values to quantify how much of a multimodal LLM's prediction is driven by the image versus the text.

  4. UHR-BAT: Budget-Aware Token Compression Vision-Language model for Ultra-High-Resolution Remote Sensing

    cs.CV 2026-04 unverdicted novelty 6.0

    UHR-BAT is a budget-aware framework that uses text-guided multi-scale importance estimation plus region-wise preserve and merge strategies to compress visual tokens in ultra-high-resolution remote sensing vision-langu...

  5. Explicit Logic Channel for Validation and Enhancement of MLLMs on Zero-Shot Tasks

    cs.AI 2026-03 conditional novelty 6.0

    An Explicit Logic Channel of LLM, VFM and probabilistic inference validates and improves zero-shot MLLMs via Consistency Rate without ground-truth labels.

  6. HART: High-Resolution Annotation-Free Reasoning Technique through a Closed-loop Framework

    cs.CV 2026-02 conditional novelty 6.0

    HART uses a closed-loop 'crop-and-answer' training scheme plus a dynamic-weight GRPO variant to improve LMM grounding and high-resolution reasoning without bounding-box annotations.

  7. Multimodal Function Vectors for Visual Relations

    cs.AI 2025-10 conditional novelty 6.0

    Multimodal function vectors extracted from a handful of attention heads in OpenFlamingo-4B encode spatial relations and can be steered, fine-tuned, and composed to improve zero-shot relational reasoning.

  8. 3D-CBM: A Framework for Concept-Based Interpretability in Generative 3D Modeling

    cs.CV 2026-06 unverdicted novelty 5.0

    Introduces 3D-CBM framework mapping raw 3D inputs to multi-tiered interpretable concepts, achieving 88.8% concept accuracy and test-time intervention on PartNet and ShapeNet.

  9. From Heads to Neurons: Causal Attribution and Steering in Multi-Task Vision-Language Models

    cs.CV 2026-04 unverdicted novelty 5.0

    HONES ranks feed-forward neurons by their causal contributions from task-relevant attention heads and uses lightweight scaling to steer performance on multiple vision-language tasks.

  10. Explicit Logic Channel for Validation and Enhancement of MLLMs on Zero-Shot Tasks

    cs.AI 2026-03 unverdicted novelty 5.0

    Introduces Explicit Logic Channel (ELC) with LLM, VFM and probabilistic inference for validating, selecting and enhancing MLLMs on zero-shot tasks using Consistency Rate and cross-channel integration.

  11. Beyond Explainable AI (XAI): An Overdue Paradigm Shift and Post-XAI Research Directions

    cs.CY 2026-02 unverdicted novelty 4.0

    Current XAI methods for DNNs and LLMs rest on paradoxes and false assumptions that demand a paradigm shift to verification protocols, scientific foundations, context-aware design, and faithful model analysis rather th...

  12. Beyond Explainable AI (XAI): An Overdue Paradigm Shift and Post-XAI Research Directions

    cs.CY 2026-02 reject novelty 4.0

    A position paper argues that post-hoc XAI explanations are unfaithful and paradoxical, proposing a shift to expert-based verification and certification of AI systems.

  13. Position: Multimodal Large Language Models Can Significantly Advance Scientific Reasoning

    cs.CL 2025-02 unverdicted novelty 2.0

    Position paper claims multimodal LLMs can significantly advance scientific reasoning and proposes a four-stage roadmap plus challenges and suggestions.