Langevin Diffusion

First-Order Stationarity of Reverse Diffusions: Bridging Optimization and Sampling

逆向擴散的一階駐點性：連結優化與生成採樣的數學機制

This research establishes a first-order optimization theory for diffusion models, proving that SDE-based reverse Langevin diffusions contract Fisher divergences exponentially under strongly convex noising.