most citedMechanistic Understanding and Mitigation of Language Model Non-Factual Hallucinations

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cs.LG2026

Learning with a Single Rollout via Pass@k Policy Optimization

Fengdi Che, Yang Liu, Lei Yu +4

Group Relative Policy Optimization (GRPO) typically requires multiple rollouts per prompt to estimate relative credit, incurring substantial sampling cost and exacerbating training…