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Ya-Zhen Wang

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#machine learning Preprint Sep 2026

First-Order Stationarity of Reverse Diffusions

Recent literature has shown a strong connection between optimization and sampling. We develop the corresponding first-order theory for diffusion models. First, the SDE-based reverse-time flows of overdamped and underdamped Langevin diffusions contract relative Fisher divergences at explicit exponential rates whenever t...

Zhi-Feng Chen, Chen-Yang Jiang, Ya-Zhen Wang · 0 citations