[R] CART and CHAID

[Prof Brian Ripley]

On Mon, 21 Jul 2008, Chua Siang Li wrote:

>   Can I say that RPART is a modified algo of CART and PARTY a modified of
>   CHAID?

Not truthfully.  CART is a trademark of commercial software.  rpart (sic) 
is similar but not 'modified' from anything -- it is an independent 
implementation of the ideas in Breiman, Friedman, Olshen and Stone (with 
some extra ideas by Terry Therneau and others).

party (sic) is very much more general than CHAID.

>   Thanks.
>   ----
>   Chua Siang Li
>   Consultant - Operations Research
>   Acceval Pte Ltd
>   Tel: 6297 8740
>   Email: siang.li.chua at acceval-intl.com
>   Website: www.acceval-intl.com

-- 
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