Fitting Shared Atoms Nested Models via MCMC or Variational Bayes R package sanba version 0.0.4 An efficient tool for fitting nested mixture models based on a shared set of atoms via Markov Chain Monte Carlo and variational inference algorithms. Specifically, the package implements the common atoms model (Denti et al., 2023), its finite version (similar to D'Angelo et al., 2023), and a hybrid finite-infinite model (D'Angelo and Denti, 2026). All models implement univariate nested mixtures with Gaussian kernels equipped with a normal-inverse gamma prior distribution on the parameters. Additional functions are provided to help analyze the results of the fitting procedure. References: Denti, Camerlenghi, Guindani, Mira (2023) <doi:10.1080/01621459.2021.1933499>, D’Angelo, Canale, Yu, Guindani (2023) <doi:10.1111/biom.13626>, D’Angelo, Denti (2026) <doi:10.1214/24-BA1458>. Software Imports: Rcpp, matrixStats, salso, scales, RColorBrewer LinkingTo: Rcpp, RcppArmadillo, RcppProgress Suggests: spelling Francesco Denti <francescodenti.personal@gmail.com> Comprehensive R Archive Network (CRAN) Francesco Denti [aut, cre, cph] (ORCID: <https://orcid.org/0000-0001-5034-7414>), Laura D'Angelo [aut] (ORCID: <https://orcid.org/0000-0003-2978-4702>) MIT + file LICENSE (https://CRAN.R-project.org/package=sanba/LICENSE) 2026-06-15 application/tgz https://CRAN.R-project.org/package=sanba doi:10.32614/CRAN.package.sanba en-US