Implementation of three methods based on the diversity forest (DF) algorithm (Hornung, 2022, <doi:10.1007/s42979-021-00920-1>), a split-finding approach that enables complex split procedures in random forests. The package includes: 1. Interaction forests (IFs) (Hornung & Boulesteix, 2022, <doi:10.1016/j.csda.2022.107460>): Model quantitative and qualitative interaction effects using bivariable splitting. Come with the Effect Importance Measure (EIM), which can be used to identify variable pairs that have well-interpretable quantitative and qualitative interaction effects with high predictive relevance. 2. Two random forest-based variable importance measures (VIMs) for multi-class outcomes: the class-focused VIM, which ranks covariates by their ability to distinguish individual outcome classes from the others, and the discriminatory VIM, which measures overall covariate influence irrespective of class-specific relevance. 3. The basic form of diversity forests that uses conventional univariable, binary splitting (Hornung, 2022). Except for the multi-class VIMs, all methods support categorical, metric, and survival outcomes. The package includes visualization tools for interpreting the identified covariate effects. Built as a fork of the 'ranger' R package (main author: Marvin N. Wright), which implements random forests using an efficient C++ implementation.
Version: 0.6.0 Depends: R (≥ 3.5) Imports: Rcpp (≥ 0.11.2), Matrix, ggplot2, ggpubr, scales, nnet, sgeostat, rms, MapGAM, gam, rlang, grDevices, RColorBrewer, RcppEigen, survival, patchwork LinkingTo: Rcpp, RcppEigen Suggests: testthat, BOLTSSIRR Published: 2025-05-05 DOI: 10.32614/CRAN.package.diversityForest Author: Roman Hornung [aut, cre], Marvin N. Wright [ctb, cph] Maintainer: Roman Hornung <hornung at ibe.med.uni-muenchen.de> License: GPL-3 NeedsCompilation: yes SystemRequirements: C++17 Additional_repositories: https://romanhornung.github.io/drat Materials: NEWS CRAN checks: diversityForest results Documentation: Downloads: Linking:Please use the canonical form https://CRAN.R-project.org/package=diversityForest to link to this page.
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