Re: [R] CART and CHAID

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Mon, 21 Jul 2008 08:16:59 +0100 (BST)

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

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Received on Mon 21 Jul 2008 - 07:19:52 GMT

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