PPtreeExt: Projection Pursuit Classification Tree Extensions
Implements extensions to the projection pursuit tree algorithm for supervised classification, see Lee, Y. (2013), <doi:10.1214/13-EJS810> and Lee, E-K. (2018) <doi:10.18637/jss.v083.i08>. The algorithm is changed in two ways: improving prediction boundaries by modifying the choice of split points-through class subsetting; and increasing flexibility by allowing multiple splits per group.
| Version: |
0.1.0 |
| Depends: |
R (≥ 4.3.0) |
| Imports: |
Rcpp (≥ 1.1.0), ggplot2, shiny, MASS, gridExtra, MixSim, PPtreeViz |
| LinkingTo: |
Rcpp, RcppArmadillo |
| Suggests: |
knitr, randomForest, rpart, GGally, RColorBrewer, roxygen2 (≥ 7.3.0), rmarkdown, rsample |
| Published: |
2026-02-06 |
| DOI: |
10.32614/CRAN.package.PPtreeExt (may not be active yet) |
| Author: |
Natalia da Silva 
[aut, cre],
Dianne Cook [aut],
Eun-Kyung Lee [aut] |
| Maintainer: |
Natalia da Silva <natalia.dasilva at fcea.edu.uy> |
| License: |
GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| URL: |
https://github.com/natydasilva/PPtreeExt |
| NeedsCompilation: |
yes |
| Materials: |
README, NEWS |
| CRAN checks: |
PPtreeExt results |
Documentation:
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