A null-image diagnostic shows VLM attribute hallucinations track the visual logit margin, not the language prior, and a routed Calib/Abstain/Adapt framework reduces them.
Object hallucination in image captioning
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When Visual Signals Mislead: A Mechanistic Study of Attribute Hallucination in Vision-Language Models
A null-image diagnostic shows VLM attribute hallucinations track the visual logit margin, not the language prior, and a routed Calib/Abstain/Adapt framework reduces them.