Author

Xiao-Feng Cao

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Preprint Aug 2026

DiDPO: Diff-in-Diff Policy Optimization for Coding Agent Training

DiDPO is proposed, a critic-free RL method that constructs fine-grained credit units directly from the structure of code diffs directly from the structure of code diffs, offering a principled framework for fine-grained credit assignment in coding agent training.

Xu-Cong Wang, Zhe Zhao, Li-Heng Yu et al. · 1 citation