Colloquium du Ceremade (Francis Bach, mardi 2 décembre 2025)

Le prochain Colloquium du Ceremade est prévu le mardi 2 décembre à 15h30 en salle A709 avec l'intervention de Francis Bach (INRIA, ENS & PSL) sur le sujet suivant :

Denoising diffusion models without diffusions

Abstract 
Denoising diffusion models have enabled remarkable advances in generative modeling across various domains. These methods rely on a two-step process: first, sampling a noisy version of the data—an easier computational task—and then denoising it, either in a single step or through a sequential procedure. Both stages hinge on the same key component: the score function, which is closely tied to the optimal denoiser mapping noisy inputs back to clean data. In this talk, I will introduce an alternative perspective on denoising-based sampling that bypasses the need for continuous-time diffusion processes. This framework not only offers a fresh conceptual angle but also naturally extends to discrete settings, such as binary data. Joint work with Saeed Saremi and Ji-Won Park.