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grounded reasoning 1multimodal llms 1preference learning 1visual hallucination mitigation 1

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1 paper

cs.CV2026

Groc-PO: Grounded Context Preference Optimization for Truthful Multimodal LLMs

Zhixiao Zheng, Zheren Fu, Zhiyuan Yao +3

The paper introduces Groc-PO, a preference‑optimization framework that provides stage‑specific supervision for object grounding, contextual grounding, and grounded reasoning in mul…