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AID / Tree Analysis in R
3 messages · Markus Preisetanz, Brian Ripley, Torsten Hothorn
On Tue, 14 Feb 2006, Markus Preisetanz wrote:
I've been looking for a function that can perform a tree analysis, similar to CHAID or QUEST. The key point is that in this case the variables are not binary but nominal (10 different values), so "tree" (from the tree package) won't work. Does anybody know help?
What makes you say that? It comes with examples of categorical variables.
Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595
On Tue, 14 Feb 2006, Markus Preisetanz wrote:
Dear Colleagues, I've been looking for a function that can perform a tree analysis, similar to CHAID or QUEST.
`ctree' in package `party' implements unbiased recursive partitioning in a
way inspired by CHAID. The methodological details are in
@article{party2006,
key = {566},
author = {Torsten Hothorn and Kurt Hornik and Achim Zeileis},
title = {Unbiased Recursive Partitioning: A Conditional Inference
Framework},
journal = {Journal of Computational and Graphical Statistics},
year = 2006,
note = {in press}
}
A preprint is available from
http://statmath.wu-wien.ac.at/~zeileis/papers/Hothorn+Hornik+Zeileis-2006.pdf
The package vignette explains the operational details.
HTH,
Torsten
The key point is that in this case the variables are not binary but nominal (10 different values), so "tree" (from the tree package) won't work. Does anybody know help? Sincerely,
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