Author name: Chenyang Wang, Yun Yang

Estimating the Number of Components in Finite Mixture Models via Variational Approximation

Chenyang Wang, Yun Yang / April 23, 2026

arXiv:2404.16746v2 Announce Type: replace-cross
Abstract: This work introduces a new method for selecting the number of components in finite mixture models (FMMs) using variational Bayes, inspired by the large-sample properties of the Evidence Lower B…

cs.LG, stat.ML

PAC-Bayes Bounds for Gibbs Posteriors via Singular Learning Theory

Chenyang Wang, Yun Yang / April 21, 2026

arXiv:2604.17219v1 Announce Type: new
Abstract: We derive explicit non-asymptotic PAC-Bayes generalization bounds for Gibbs posteriors, that is, data-dependent distributions over model parameters obtained by exponentially tilting a prior with the empi…