Zhicheng Zhang, Ziyan Wang, Yali Du, Fei Fang

VAM: Verbalized Action Masking for Controllable Exploration in RL Post-Training -- A Chess Case Study

arXiv:2602.16833v1 Announce Type: new Abstract: Exploration remains a key bottleneck for reinforcement learning (RL) post-training of large language models (LLMs), where sparse feedback and large …