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Investigating and Mitigating the Multimodal Hallucination Snowballing in Large Vision-Language Models

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arxiv 2407.00569 v4 pith:US6UJUJY submitted 2024-06-30 cs.CV cs.AIcs.CL

classification cs.CVcs.AIcs.CL
keywords lvlmsvisualmultimodalgeneratedhallucinationhallucinationsinformationmodels
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Though advanced in understanding visual information with human languages, Large Vision-Language Models (LVLMs) still suffer from multimodal hallucinations. A natural concern is that during multimodal interaction, the generated hallucinations could influence the LVLMs' subsequent generation. Thus, we raise a question: When presented with a query relevant to the previously generated hallucination, will LVLMs be misled and respond incorrectly, even though the ground visual information exists? To answer this, we propose a framework called MMHalSnowball to evaluate LVLMs' behaviors when encountering generated hallucinations, where LVLMs are required to answer specific visual questions within a curated hallucinatory conversation. Crucially, our experiment shows that the performance of open-source LVLMs drops by at least $31\%$, indicating that LVLMs are prone to accept the generated hallucinations and make false claims that they would not have supported without distractions. We term this phenomenon Multimodal Hallucination Snowballing. To mitigate this, we further propose a training-free method called Residual Visual Decoding, where we revise the output distribution of LVLMs with the one derived from the residual visual input, providing models with direct access to the visual information. Experiments show that our method can mitigate more than $24\%$ of the snowballed multimodal hallucination while maintaining capabilities.

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Forward citations

Cited by 6 Pith papers

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

  1. CLAIM: Mitigating Multilingual Object Hallucination in Large Vision-Language Models with Cross-Lingual Attention Intervention

    cs.CL 2025-06 conditional novelty 6.0 of 10

    An inference-time attention-shift intervention aligns non-English queries' cross-modal attention with English, cutting multilingual object hallucination in LVLMs on POPE and MME.

  2. One for All: Update Parameterized Knowledge Across Multiple Models

    cs.CL 2025-06 conditional novelty 6.0 of 10

    One fine-tuned small model plus an ensemble step can update a fact across multiple large language models with a single edit, outperforming separate per-model editing.

  3. OmniDPO: A Preference Optimization Framework to Address Omni-Modal Hallucination

    cs.AI 2025-08 conditional novelty 5.0 of 10

    OmniDPO extends direct preference optimization with audio-video alignment and modality-degradation preference pairs to reduce omni-modal hallucination.

  4. CAI: Caption-Sensitive Attention Intervention for Mitigating Object Hallucination in Large Vision-Language Models

    cs.CV 2025-06 conditional novelty 5.0 of 10

    CAI reduces object hallucination in LVLMs by injecting caption-query attention patterns into selected attention heads at inference time.

  5. Seeing Far and Clearly: Mitigating Hallucinations in MLLMs with Attention Causal Decoding

    cs.CV 2025-05 conditional novelty 5.0 of 10

    FarSight adds upper-triangular negative biases to the causal mask to absorb outlier-token attention, reducing hallucinations in MLLMs without training.

  6. Empowering Multimodal LLMs with External Tools: A Comprehensive Survey

    cs.CV 2025-08 unverdicted novelty 2.0 of 10

    A survey paper maps how external tools are used to augment multimodal large language models across data, tasks, evaluation, and future directions.

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