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Xiaomin Li

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#artificial intelligence Preprint Oct 2026

Composing What Each Teacher Learned: Delta Distillation for Multi-Teacher On-Policy Learning

Multi-teacher on-policy distillation (MOPD) is used in two settings. In common-domain composition, several teachers score each student rollout from one prompt domain and their signals form a single target; in routed-domain distillation, prompts from different domains are assigned to the corresponding specialist. Both s...

Yuanda Xu, He-Jian Sang, Zheng-Ze Zhou et al. · 0 citations
Jul 2026

TREK: Distill to Explore, Reinforce to Refine

TREK (Teacher-Routed Exploration via Forward KL), a simple staged procedure that uses distillation not for imitation but for exploration support expansion, achieves high success rates early in training while unaided GRPO requires substantially more optimization steps to reach comparable levels.

Yuanda Xu, Zhengze Zhou, Kayhan Behdin et al. · 0 citations

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