Author

Junoh Park

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Jul 2026

ReCo: Reweighting GRPO Against Distributional Concentration

ReCo, a reweighting method that improves Pass@k for large values of k and is comparable to GRPO for small values of k, and replaces the token-level importance ratio with a variance-based ratio that gives larger update scale to non-saturated decision points.

Junoh Park, Junseong Hwang, Won-Yong Cho et al. · arXiv.org · 0 citations