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Hongxi Yan

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Preprint Aug 2026

Gated-BEPO: Confidence-Gated Bellman Credit Assignment for Large Language Model Agents

Experiments on WebShop, ALFWorld, and visual Sokoban show consistent improvements across language and vision-language models, while diagnostic ablations support the effectiveness of Bellman fixed-point value estimation and show that step-level credit should be incorporated selectively rather than uniformly into the final advantage.

Hongxi Yan, Ziyue Huang, Shichao Fan et al. · 0 citations