Re: [R] CART and CHAID

From: Achim Zeileis <Achim.Zeileis_at_wu-wien.ac.at>
Date: Mon, 21 Jul 2008 12:01:40 +0200 (CEST)

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

>
> Thanks, yes, understand that PARTY offers a lot lot more than CHAID.
> mmm, allow me to rephrase it.
> If I am looking for something similar to CART (to grow tree and prune back)
> and CHAID (using sig test to stop the tree), I can use RPART and PARTY
> respectively?
> And are there any more other R packages that offer improved CART/CHAID
> technqiues?

See the "Recursive Partitioning" section in the CRAN task view

   http://CRAN.R-project.org/view=MachineLearning Z

> 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
> This message and any attachments (the "message") are intended for the
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>
> --------- Original Message --------
> From: "Prof Brian Ripley" <ripley_at_stats.ox.ac.uk>
> To: "Chua Siang Li" <siang.li.chua_at_acceval-intl.com>
> Cc: r-help_at_r-project.org
> Subject: Re: [R] CART and CHAID
> Date: 07/21/08 15:17
> 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: [1]siang.li.chua_at_acceval-intl.com
> > Website: [2]www.acceval-intl.com
> --
> Brian D. Ripley, [3]ripley_at_stats.ox.ac.uk
> Professor of Applied Statistics, [4]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
>
> References
>
> 1. mailto:siang.li.chua_at_acceval-intl.com
> 2. http://www.acceval-intl.com/
> 3. mailto:ripley_at_stats.ox.ac.uk
> 4. http://www.stats.ox.ac.uk/~ripley/
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>



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Mon 21 Jul 2008 - 10:24:53 GMT

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