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Not All Tokens Deserve Equal Credit: Counterfactual Sensitivity Credit Reallocation for Long-CoT Reasoning
Reinforcement learning with verifiable rewards (RLVR) is central to improving long-CoT reasoning in large language models. Critic-free methods such as GRPO convert response-level rewards into advantages and uniformly bro
推荐理由Not All Tokens Deserve Equal Credit：Reinforcement learning with verifiable rewards (RLVR) is central to improving long-CoT。