Author

Xiao-Feng Cao

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Preprint Aug 2026

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

Reinforcement learning with Verifiable Reward (RLVR) has emerged as a powerful paradigm for training coding agents, where the execution feedback from compilation and tests provides objective verification. However, unlike agent tasks, coding agents face a unique and finer-grained credit assignment challenge: at each ste...

Xu-Cong Wang, Zhe Zhao, Li-Heng Yu et al. · 0 citations