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Jiacheng Chen

Entropy Mechanism equal-contribution author. Homepage identifies him as a CUHK CSE Ph.D. student advised by Yu Cheng and Weiyang Liu, with MiniMax and Shanghai AI Lab internship/project work; page lists Entropy Mechanism and P1/MaxProof related reasoning RL work.

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Jun 21, 2026

The Entropy Mechanism of Reinforcement Learning for Reasoning Language Models

这篇论文把 reasoning LLM 的 RLVR 训练瓶颈重新表述为 policy entropy 的消耗过程：在没有 entropy / KL 干预时，reward 提升和 entropy 下降之间可以被经验式 $R= a\exp(\mathcal H)+b$ 拟合；进一步用 softmax policy 的 entropy dynamics 说明，高概率且高 advantage 的 token update 会持续降低 ent...

2505.22617-entropy-mechanism-rl-reasoning-language-models Training StabilityReasoning RLRL Theory