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Author

Zezhi Tang

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Preprint Oct 2026

Does a Learned Corrector Beat a Simple Retreat? Evidence from a Frozen VLA

Before deploying runtime recovery for a frozen vision-language-action (VLA) policy, one must establish that an intervention improves success beyond ordinary run-to-run variation and that its complexity adds value over a simple action. We evaluate these questions on frozen $\pi_{0.5}$ across four RoboTwin tasks. For eac...

Chen-Chao Sheng, Zhuang Jiang, Liu Yang et al. · 0 citations
Conference Aug 2026

Post-Training for Reasoning LLMs with Reinforcement Learning: A Stability–Efficiency Perspective

Reinforcement Learning (RL)-based post-training has become a key mechanism for improving reasoning Large Language Models (LLMs), especially when automated verifiers enable Reinforcement Learning with Verifiable Reward (RLVR). Recent methods, however, are increasingly modular: many apparent algorithmic advances recombin...

Liu Yang, Han Zhu, Zheng-Yang Zhong et al. · 2 citations
Review

Reinforcement Learning Based Optimal Control: A Survey of Adaptive Dynamic Programming for Manipulators and Wheeled Mobile Robots

A robotics-oriented review of ADP for two representative platforms, namely robotic manipulators and Mobile Wheeled Robots, and compares studies employing typical ADP structures, approaches to robustness guarantees, hardware validation, and practical deployment limitations.

Chi-Pui Chan, Ning-Wei Bai, Qichen Yin et al. · 0 citations
#robotics Preprint Aug 2026

WAM-OPD: On-Policy Distillation for World Action Models

WAM-OPD, a deployment-consistent post-training recipe for a video-first WAM, is introduced and it is suggested that dense teacher supervision on student-induced histories is a promising post-training interface for video-first WAMs.

Liu Yang, Zhuang Jiang, Chenchao Sheng et al. · 2 citations

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