Why GRPO Needs Normalization: A Local-Curvature Perspective on Adaptive Gradients

arXiv:2601.23135 · cs.LG · Submitted 2026-01-30 · Read on arXiv

cs.LG

Submitted: 2026-01-30

Updated: 2026-10-01

Terminology

• GRPO — 4× in this paper · explained in 6 episodes
• Benchmark — 1× in this paper · explained in 2 episodes
• Group Relative Policy Optimization — 1× in this paper
• Group Relative Policy Optimization (GRPO) — 1× in this paper · explained in 5 episodes
• Reinforcement Learning — 1× in this paper · explained in 4 episodes
• Reinforcement Learning (RL) — 1× in this paper · explained in 25 episodes

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