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arxiv_cs_lg · Oct 23, 2026 · paper

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Direction-Aware Token Credit Assignment with Reward-Model Gradients

arxiv.orgOct 23, 2026
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In brief

GRPO shares a response-level advantage across tokens, leaving unresolved how strongly each token should contribute to learning. Updates induced by the shared advantage reinforce or suppress the sampled token at each p...

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Direction-Aware Token Credit Assignment with Reward-Model Gradients

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