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Weichang Wu

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#artificial intelligence Preprint Sep 2026

SkillCome: Group Contrast Skill Optimization with Dual Memory

Skill evolution improves the capabilities of large language models by analyzing trajectories generated under a given skill and modifying the skill accordingly. Existing approaches typically generate a single trajectory per question. However, this provides insufficient optimization signals since it requires inferring ef...

Hao-Lin Li, Feng Hong, Ang Li et al. · 0 citations
Preprint Aug 2026

Towards Understanding On-Policy Distillation through the Lens of Test-Time Scaling

It is observed that OPD-trained models maintain superior avg@K performance across sampling budgets, while the advantage in pass@K gradually shifts to the pre-OPD base models as K increases, suggesting that OPD primarily improves sampling efficiency rather than consistently expanding the student's reasoning capability b...

Xinmu Ge, Zizhuo Zhang, Yu Huang et al. · 1 citation

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