Bayesian Additive Regression Trees with Stan-Sampled Parametric Extensions R package stan4bart version 0.0-12 Fits semiparametric linear and multilevel models with non-parametric additive Bayesian additive regression tree (BART; Chipman, George, and McCulloch (2010) <doi:10.1214/09-AOAS285>) components and Stan (Stan Development Team (2021) <https://mc-stan.org/>) sampled parametric ones. Multilevel models can be expressed using 'lme4' syntax (Bates, Maechler, Bolker, and Walker (2015) <doi:10.18637/jss.v067.i01>). Software Depends: R (>= 3.5-0), methods, dbarts (>= 0.9-21) Imports: stats, Matrix, parallel, RcppParallel (>= 5.1.1) LinkingTo: BH (>= 1.72.0.3), Rcpp (>= 1.0.5), RcppEigen (>= 0.3.3.7.0), RcppParallel (>= 5.1.1), dbarts (>= 0.9-20) Suggests: testthat (>= 2.0-0), lme4, reformulas Vincent Dorie <vdorie@gmail.com> Comprehensive R Archive Network (CRAN) Vincent Dorie [aut, cre] (ORCID: <https://orcid.org/0000-0002-9576-3064>), Ben Goodrich [ctb] (rstanarm_functions.R, StanHeaders), Jonah Gabry [ctb] (rstanarm_functions.R, StanHeaders), Imad Ali [ctb] (rstanarm_functions.R), Sam Brilleman [ctb] (rstanarm_functions.R), Paul-Christian Burkner [ctb] (rstanarm_functions.R, ORCID: <https://orcid.org/0000-0001-5765-8995>), Joshua Pritikin [ctb] (StanHeaders, ORCID: <https://orcid.org/0000-0002-9862-5484>), Andrew Gelman [ctb] (StanHeaders, ORCID: <https://orcid.org/0000-0002-6975-2601>), Bob Carpenter [ctb] (StanHeaders), Matt Hoffman [ctb] (StanHeaders), Daniel Lee [ctb] (StanHeaders), Michael Betancourt [ctb] (StanHeaders, ORCID: <https://orcid.org/0000-0002-2900-0931>), Marcus Brubaker [ctb] (StanHeaders, ORCID: <https://orcid.org/0000-0002-7892-9026>), Jiqiang Guo [ctb] (StanHeaders), Peter Li [ctb] (StanHeaders), Allen Riddell [ctb] (StanHeaders), Marco Inacio [ctb] (StanHeaders, ORCID: <https://orcid.org/0000-0002-6865-5404>), Mitzi Morris [ctb] (StanHeaders), Jeffrey Arnold [ctb] (StanHeaders, ORCID: <https://orcid.org/0000-0001-9953-3904>), Rob Goedman [ctb] (StanHeaders), Brian Lau [ctb] (StanHeaders), Rob Trangucci [ctb] (StanHeaders), Alp Kucukelbir [ctb] (StanHeaders), Robert Grant [ctb] (StanHeaders), Dustin Tran [ctb] (StanHeaders), Michael Malecki [ctb] (StanHeaders), Yuanjun Gao [ctb] (StanHeaders), Trustees of Columbia University [cph] (rstanarm_functions.R, StanHeaders), Lawrence Livermore National Security [cph] (CVODES), The Regents of the University of California [cph] (CVODES), Southern Methodist University [cph] (CVODES), Douglas Bates [ctb] (lme4_functions.R, ORCID: <https://orcid.org/0000-0001-8316-9503>), Martin Maechler [ctb] (lme4_functions.R, ORCID: <https://orcid.org/0000-0002-8685-9910>), Ben Bolker [ctb] (lme4_functions.R, ORCID: <https://orcid.org/0000-0002-2127-0443>), Steve Walker [ctb] (lme4_functions.R, ORCID: <https://orcid.org/0000-0002-4394-9078>), Armon Dadgar [ctb] (adaptive radix tree), Bothner Per [ctb] (config.guess), Elliston Ben [ctb] (config.guess), Free Software Foundation [cph] (config.sub), Guido U Draheim [ctb] (ax_check_compile_flag.m4), Maarten Bosmans [ctb] (ax_check_compile_flag.m4), Christophe Tournayre [ctb] (ax_ext.m4), Michael Petch [ctb] (ax_ext.m4, ax_gcc_x86_avx_xgetbv.m4, ax_gcc_x86_cpuid.m4), Rafael de Lucena Valle [ctb] (ax_ext.m4), Steven G. Johnson [ctb] (ax_gcc_x86_cpuid.m4, ORCID: <https://orcid.org/0000-0001-7327-4967>), Matteo Frigo [ctb] (ax_gcc_x86_cpuid.m4), Scott Pakin [ctb] (ax_func_posix_memalign.m4, ORCID: <https://orcid.org/0000-0002-5220-1985>) GPL (>= 3) 2026-03-19 application/tgz https://CRAN.R-project.org/package=stan4bart doi:10.32614/CRAN.package.stan4bart