Empirically observed narrow time intervals for feature emergence in diffusion models.
Mixture of strongly log-concave densities bounds critical windows.
Synthetic experiments validate the concept of critical windows.
Stability Diffusion experiments suggest diagnosing fairness and privacy violations.
Quotes
"Empirically, it has been observed that there are narrow time intervals in sampling during which particular features of the final image emerge." - Content
"We propose a formal framework for studying these windows and show that for data coming from a mixture of strongly log-concave densities, these windows can be provably bounded." - Content
"Additionally, preliminary experiments on Stable Diffusion suggest critical windows may serve as a useful tool for diagnosing fairness and privacy violations in real-world diffusion models." - Content