tracked author

Baoxiang Wang (王宝祥)

TRM and OTB coauthor and Jiawei Xu's public supervisor. Homepage identifies him as Assistant Professor at CUHK-Shenzhen School of Data Science with reinforcement learning and game theory interests, and as a visiting researcher at Vector Institute.

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Jun 21, 2026

Trust Region Masking for Long Horizon LLM Reinforcement Learning

这篇论文把 long horizon LLM RL 中 pi roll 与 pi theta 的实现级分布差异形式化为 surrogate objective error:经典 trust region bound 随长度呈 $O(T^2)$ 并迅速失效,作者给出更紧的 KL/TV 组合界,指出 max token divergence 是单靠 sequence average KL 无法替代的控制量,并提出 Trust Region...

2512.23075-trust-region-masking-long-horizon-llm-rl Training StabilityRL AlgorithmRollout Optimization