Package: chaidr Title: CHAID and Exhaustive CHAID Decision Trees Version: 0.1.0.9000 Authors@R: person("Osamu", "Morimoto", email = "galactic.supermarket@gmail.com", role = c("aut", "cre", "cph")) Description: An implementation of the CHAID (Chi-squared Automatic Interaction Detection) decision tree algorithm of Kass (1980) and the Exhaustive CHAID variant of Biggs, de Ville, and Suen (1991) , 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. License: MIT + file LICENSE Encoding: UTF-8 Language: en-GB Roxygen: list(markdown = TRUE) 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 VignetteBuilder: knitr Config/testthat/edition: 3 Config/roxygen2/version: 8.0.0 URL: https://github.com/morimotoosamu/chaidr, https://morimotoosamu.github.io/chaidr/ BugReports: https://github.com/morimotoosamu/chaidr/issues Repository: https://morimotoosamu.r-universe.dev Date/Publication: 2026-08-09 02:19:57 UTC RemoteUrl: https://github.com/morimotoosamu/chaidr RemoteRef: HEAD RemoteSha: ee3556c8ba42d8fcbd4c716a6d35b614d85bf96e NeedsCompilation: no Packaged: 2026-10-08 10:25:26 UTC; root Author: Osamu Morimoto [aut, cre, cph] Maintainer: Osamu Morimoto