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Author

Daniil Plyusov

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#artificial intelligence Feb 2026

F-GRPO: Don't Let Your Policy Learn the Obvious and Forget the Rare

A difficulty-aware scaling coefficient is proposed, inspired by Focal loss, that down-weights updates on high-success sampled groups and improves average math pass@256 in all three cases, without increasing group size or computational cost.

Daniil Plyusov, Alexey Gorbatovski, B. Shaposhnikov et al. · 9 citations · ⚡1

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