Séance Séminaire

Séminaire de Probabilités et Statistique

lundi 27 mai 2019 à 13:45 - UM - Bât 09 - Salle de conférence (1er étage)

Maxime Sangnier (Sorbonne Université)

GANs from a statistical point of view

Generative Adversarial Networks (GANs) are a class of generative algorithms that have been shown to produce state-of-the art samples, especially in the domain of image creation. The fundamental principle of GANs is to approximate the unknown distribution of a given data set by optimizing an objective function through an adversarial game between a family of generators and a family of discriminators. In this talk, we illustrate some statistical properties of GANs, focusing on the deep connection between the adversarial principle underlying GANs and the Jensen-Shannon divergence, together with some optimality characteristics of the problem. We also analyze the role of the discriminator family and study the large sample properties of the estimated distribution.