Author

Zhenhao Zhang

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#machine learning Preprint Sep 2026

ReTaCo: Residual-Target Control for On-Policy Distillation

On-policy distillation (OPD) trains a student on its own generated prefixes with token-level teacher feedback, but transmitting or storing the teacher's full-vocabulary distribution at every token is costly. Entropy-aware OPD (EOPD) adds forward supervision to reverse KL to help the student recover plausible tokens it...

Zi-Xiang Ni, Zhuo-Lun Hu, Ren-Jie Cao et al. · 0 citations

Jul 2026

SeekJudge: A Practical Reward Framework for Reinforcement Learning in Computer-Use Agents

The proposed SeekJudge framework, in which four role-specialized agents, a Condense, a Ground, a Seek and an Analyze agent, reach a verdict through a Seek--Analyze loop over the trajectory, is the first practical model-based reward to match or surpass native rule-based supervision in online RL.

Yang Wan, Zhenhao Zhang, Jie-Rui Wang et al. · arXiv.org · 0 citations