arXiv AI By Kangda Wei, Ruihong Huang

MMR-GRPO: Accelerating GRPO-Style Training through Diversity-Aware Reward Reweighting

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arXiv:2601. 09085v2 Announce Type: replace-cross Abstract: Group Relative Policy Optimization (GRPO) has become a standard approach for training mathematical reasoning models; however, its reliance on multiple completions per prompt makes training computationally expensive.

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