Chinese Academy of Sciences

“Temporal GRPO addresses this problem by constructing detectable task stages, aligning each rollout with stage-specific action intervals, and comparing only rollouts that have entered the same stage.”

“A rollout that completes several valid stages but fails later can therefore penalize the actions that produced its earlier progress. We call this trajectory-level credit aliasing.”

“Corresponding author and likely senior researcher overseeing the academic direction of the project”

“The breadth of co-authors across Tsinghua, Peking University, Chinese Academy of Sciences, HKUST(GZ), and Xiaomi suggests this is a coordinated multi-institution effort, not an isolated academic project.”