Nikita Puchkin

Statistical learning theory · empirical processes theory · exp-concave losses · Tracking the best expert · dynamic regret · fixed share forecaster · Sequential change detection · noise-contrastive approach · online convex optimization · follow the approximate leader · Active learning · sample complexity · abstention · reject option · Chow’s risk · High-dimensional statistics · covariance estimation · dimension-free bounds · Generative diffusion models and Schrödinger bridges