arXiv Computer Vision By Tengda Guo, Jie Leng, Hanlei Li, Yaoyuan Liang, Qingyue Zhang, Dian Yang, Mingyu Zhang, Yuhua Fu, Shao-Lun Huang

CAVE: A Structured Credit Assignment Approach for Fragmented Visual Evidence Reasoning

Read the original on arXiv Computer Vision →

The paper introduces CAVE, a structured credit assignment method that enhances Vision‑Language Models by evaluating intermediate reasoning steps through belief updates, evidence acquisition, and adaptive focus control. CAVE is built on a GRPO framework and guides models to optimize each action, improving reliability in fragmented visual reasoning. The authors also present TRACER‑Bench, a new benchmark covering nonlocal and semantically confusable reasoning dimensions, and show that CAVE boosts performance on both public datasets and this benchmark while maintaining strong general multimodal results.

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