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An implementation in base 'R' of the CHAID (Chi-squared Automatic Interaction Detection) decision tree algorithm of Kass (1980) <doi:10.2307/2986296> and the Exhaustive CHAID variant of Biggs, de Ville, and Suen (1991) <doi:10.1080/02664769100000005>, as specified in the 'IBM SPSS' Statistics Algorithms documentation. Supports nominal, ordinal (with floating missing category), and continuous predictors, and nominal, ordinal, and continuous response variables using Pearson chi-squared, Goodman row-effects, and one-way ANOVA F tests respectively. Includes prediction, rule extraction, gains and lift analysis, validation on holdout data, and visualization via base graphics, 'Graphviz' DOT, 'plotly', and conversion to 'partykit' objects.
| Version: | 0.1.0 |
| Depends: | R (≥ 4.5) |
| Imports: | graphics, grDevices, stats, utils |
| Suggests: | DiagrammeR, ggparty, ggplot2, htmlwidgets, knitr, partykit, plotly, rmarkdown, rpart, spelling, testthat (≥ 3.2.0), withr |
| Published: | 2026-08-08 |
| DOI: | 10.32614/CRAN.package.chaidr |
| Author: | Osamu Morimoto [aut, cre, cph] |
| Maintainer: | Osamu Morimoto <galactic.supermarket at gmail.com> |
| BugReports: | https://github.com/morimotoosamu/chaidr/issues |
| License: | MIT + file LICENSE |
| URL: | https://github.com/morimotoosamu/chaidr, https://morimotoosamu.github.io/chaidr/ |
| NeedsCompilation: | no |
| Language: | en-GB |
| Citation: | chaidr citation info |
| Materials: | README, NEWS |
| CRAN checks: | chaidr results |
| Reference manual: | chaidr.html , chaidr.pdf |
| Vignettes: |
chaidr detailed tutorial (Japanese) (source, R code) Introduction to chaidr (source, R code) |
| Package source: | chaidr_0.1.0.tar.gz |
| Windows binaries: | r-devel: not available, r-release: chaidr_0.1.0.zip, r-oldrel: chaidr_0.1.0.zip |
| macOS binaries: | r-release (arm64): chaidr_0.1.0.tgz, r-oldrel (arm64): chaidr_0.1.0.tgz, r-release (x86_64): chaidr_0.1.0.tgz, r-oldrel (x86_64): chaidr_0.1.0.tgz |
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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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