The Entropy Mechanism of RL for Reasoning Language Models

Why RL entropy collapses, the law that predicts it, and two covariance-clipping fixes.

Cui et al. · arXiv 2025 · Reasoning & RL. Read the paper ↗

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Questions

What is The Entropy Mechanism of RL for Reasoning Language Models?
Why RL entropy collapses, the law that predicts it, and two covariance-clipping fixes.
Who published The Entropy Mechanism of RL for Reasoning Language Models, and where?
Cui et al. — arXiv 2025 (arXiv:2505.22617).
Where can I find a visual explainer of The Entropy Mechanism of RL for Reasoning Language Models?
Right here — a free, interactive, animated walkthrough of the whole paper, with exhibits computed from the real formulas and verbatim quotes from the source.

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