Fixing GRPO's Credit Assignment Problem Without Evaluating Every Step
mrkn1 · hn · 2026-10-02
A Hacker News post links an arXiv paper (2609.36178) proposing a fix for GRPO's credit assignment problem without the cost of evaluating every step — targeting a key efficiency and training-quality bottleneck in the RL pipeline widely used for LLM post-training.
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