Author

Peng Hu

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Preprint Aug 2026

Multi-Branch Policy Optimization for Multimodal Large Language Models

This work proposes Multi-Branch Policy Optimization (MBPO), a tree-based framework that constructs reasoning trees at vision-language decision boundaries, enabling sibling branches to explore diverse visual hypotheses and assigning segment-level credit through branch-relative advantages.

Shuai Lyu, Yu-Ning Gong, Rui-Ling Gao et al. · 0 citations

Preprint Aug 2026

RA-CAD: Learning Post-Execution Critique for State-Aware Text-to-CAD Generation

RA-CAD (ReAct Agent for CAD), a state-aware agent that interacts with the CAD environment through a Generate--Execute--Critique--Rewrite loop achieves state-of-the-art execution validity and geometric quality compared with existing methods and strong proprietary language models, demonstrating the effectiveness of the p...

Shu-Hao Yan, Changhao He, Peng Hu et al. · 0 citations