Author

Michael Xu

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Jul 2026

Weak-to-Strong On-Policy Distillation

W2S-OPD is introduced, a simple yet effective OPD framework that improves the strong student by distilling from multiple weak models, and outperforms OPD, enables the student to surpass the domain teacher, and keeps improving the student even when every supervision source is weaker.

Fangxu Yu, Zinan Lin, Xiaodong Liu et al. · arXiv.org · 7 citations · ⚡1

Jul 2026

GFlowRL: Scaling Distribution-Matching RL to Large Language Models

GFlowRL, a streamlined GFlowNet-style RL algorithm that removes the auxiliary partition network entirely while preserving the reward-distribution-matching objective, is proposed, and is the first GFlowNet-style RL algorithm to scale stably across both dense and sparse architectures.

Xiaodong Liu, Michael Xu, Jack W. Stokes et al. · arXiv.org · 0 citations