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Jingjie Xia

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#small language model Preprint Aug 2026

OPDSearch+: On-Policy Distillation with RL Refinement for Search-Augmented Reasoning

The role of a frozen off-the-shelf instruct model as the teacher in on-policy distillation is investigated, and a key insight is revealed: the teacher reshapes the student's policy distribution so that subsequent RL converges to a superior solution that RL alone cannot reach.

Qi Ye, Zhiyuan Gu, Jingjie Xia et al. · 0 citations