https://peterliu599.r-universe.devRecent package updates in peterliu599R-universehttps://github.com/peterliu599.pnghttps://peterliu599.r-universe.devThu, 21 May 2026 20:58:48 GMTbliu68@jh.edu (Peter Liu)Implements a general framework for globally optimizing user-specified objective functionals over interpretable binary weight functions represented as sparse decision trees, called ROOT (Rashomon Set of Optimal Trees). It searches over candidate trees to construct a Rashomon set of near-optimal solutions and derives a summary tree highlighting stable patterns in the optimized weights. ROOT includes a built-in generalizability mode for identifying subgroups in trial settings for transportability analyses (Parikh et al. (2025) <doi:10.1080/01621459.2025.2495319>).https://github.com/r-universe/peterliu599/actions/runs/26386301776Thu, 21 May 2026 20:58:48 GMTROOT0.2.0successhttps://peterliu599.r-universe.devhttps://github.com/peterliu599/rootgeneralizability_path_example.Rmdgeneralizability_path_example.htmlGeneralizability Path Example: Characterizing Underrepresented Populations2026-01-22 13:50:112026-03-05 03:30:23optimization_path_example.Rmdoptimization_path_example.htmlOptimization Path Example: Portfolio Selection via Variance Minimization2026-01-22 13:50:112026-02-19 17:42:11quickstart.Rmdquickstart.htmlQuickstart Guide to ROOT2026-01-22 13:50:112026-03-05 03:30:23