Package: probe Type: Package Title: Sparse High-Dimensional Linear Regression with a PaRtitiOned Empirical Bayes Ecm (PROBE) Algorithm Version: 1.3 Date: 2026-02-27 Authors@R: c(person("Alexander", "McLain", email = "mclaina@mailbox.sc.edu", role = c("aut", "cre"), comment = c(ORCID = "0000-0002-5475-0670")), person("Anja", "Zgodic", role = c("aut", "ctb"))) Description: Implements an efficient and powerful Bayesian approach for sparse high-dimensional linear regression. It uses minimal prior assumptions on the parameters through plug-in empirical Bayes estimates of hyperparameters. An efficient Parameter-Expanded Expectation-Conditional-Maximization (PX-ECM) algorithm estimates maximum a posteriori (MAP) values of regression parameters and variable selection probabilities. The PX-ECM results in a robust computationally efficient coordinate-wise optimization, which adjusts for the impact of other predictor variables. The E-step is motivated by the popular two-group approach to multiple testing. The result is a PaRtitiOned empirical Bayes Ecm (PROBE) algorithm applied to sparse high-dimensional linear regression, implemented using one-at-a-time or all-at-once type optimization. Simulation studies found the all-at-once variant to be superior. BugReports: https://github.com/alexmclain/PROBE/issues License: GPL (>= 2) Encoding: UTF-8 RoxygenNote: 7.3.3 Imports: Rcpp, glmnet, RcppArmadillo LinkingTo: Rcpp, RcppArmadillo NeedsCompilation: yes Packaged: 2026-07-02 09:22:59 UTC; root Depends: R (>= 4.00) Repository: https://alexmclain.r-universe.dev Date/Publication: 2026-02-27 17:38:31 UTC RemoteUrl: https://github.com/alexmclain/probe RemoteRef: HEAD RemoteSha: 79045968c6497f936e4f5c1b8fc75cab0e75c5a6 RemoteSubdir: probe Author: Alexander McLain [aut, cre] (ORCID: ), Anja Zgodic [aut, ctb] Maintainer: Alexander McLain