Negative Advantages Is a Double-Edged Sword: Calibrating advantages in GRPO for Search Agents

arXiv:2604.18235 · cs.CL, cs.AI · Submitted 2026-04-20 · Read on arXiv

cs.CL, cs.AI

Submitted: 2026-04-20

Updated: 2026-10-12

Terminology

• GRPO — 3× in this paper · explained in 6 episodes
• Benchmark — 1× in this paper · explained in 2 episodes
• Calibration — 1× in this paper · explained in 7 episodes
• Group Relative Policy Optimization — 1× in this paper
• Group Relative Policy Optimization (GRPO) — 1× in this paper · explained in 5 episodes

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