Yi-Kai Zhang

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cs.LG2026

$V_{0.5}$ : Generalist Value Model as a Prior for Sparse RL Rollouts

Yi-Kai Zhang, Yueqing Sun, Hongyan Hao +4

In Reinforcement Learning with Verifiable Rewards (RLVR), constructing a robust advantage baseline is critical for policy gradients, effectively guiding the policy model to reinfor…

cs.LG2026

CoBA-RL: Capability-Oriented Budget Allocation for Reinforcement Learning in LLMs

Zhiyuan Yao, Yi-Kai Zhang, Yuxin Chen +7

Reinforcement Learning with Verifiable Rewards (RLVR) has emerged as a key approach for enhancing LLM reasoning. However, standard frameworks like Group Relative Policy Optimizatio…

V0.5​: Generalist Value Model as a Prior for Sparse RL Rollouts

CoBA-RL: Capability-Oriented Budget Allocation for Reinforcement Learning in LLMs

$V_{0.5}$ : Generalist Value Model as a Prior for Sparse RL Rollouts