Theoretical Advances in Score-Based Generative Models: Convergence Bounds and Noise Schedule Optimization, Antonio OCELLO (CPAM, École Polytechnique)

Séminaire PASTA, 4 avril 2025, Salle de conférences, IECL Résumé : Score-based generative models (SGMs) have emerged as a state-of-the-art framework for sampling from complex data distributions, leveraging the estimation of score functions through noise-perturbed samples. A central challenge in understanding SGMs lies in quantifying their convergence to the target…

Lire la suite

Journée PASTA, 9 juillet 2024

9h00 – 9h45 Inférence des noyaux de fragmentations – Abdelkader Metakalard9h45 – 10h30 Simulation de diffusions : du schéma d’Euler-Maruyama à un schéma de simulation avec temps local ? – Julia Budzinski10h30 – 11h00 Pause café11h00 – 11h45 Modélisation, simulation et inférence pour les processus ponctuels et applications à la…

Lire la suite

Additive noise tunes the stability of high-dimensional nonlinear systems, Axel Hutt (Inria, Équipe MIMESIS, Strasbourg), 7 mai 2024

Abstract : Experimental brain activity is known to show oscillations in specific frequency bands, which reflects neural information processing. For instance, strong oscillations at about 2Hz reflect tiredness and sleepiness, strong 40Hz oscillations indicate alertness. Changes of power in frequency bands indicate changes in information processing. For instance, it has…

Lire la suite