[R] multivariate splits

[Bálint Czúcz]

Yes,
I am interested in tree-building algorithms that consider some
(linear) combination of the covariates during the splitting. Sorry if
I have not been clear enough.

There seem to be a large variety of methods (e.g. see
http://www.tigr.org/~salzberg/murthy_thesis/survey/node11.html),
I hoped that some methods might have already been developed as R packages...

Thanks for the suggestions.
Bálint


2006/6/19, Liaw, Andy <andy_liaw at merck.com>:
> If by "multivariate split" the OP meant splitting on combinations of
> covariates (instead of multi-way split on a single covariate at a time),
> there aren't that many methods published (AFAIK).  All the ones I know about
> are in the cheminformatics area:  RP-SA and generalizations/extensions of
> it.  No R package I know of can do it.
>
> Best,
> Andy
>
> From: Torsten Hothorn
> >
> > On Mon, 19 Jun 2006, Bálint Czúcz wrote:
> >
> > > Dear R users!
> > >
> > > Does someone know about any algorithms / packages in R,
> > that perform
> > > classification / regression / decision trees using multivariate
> > > splits?
> > >
> > > I have done some research, but I found nothing. Packages "tree" and
> > > "rpart" seem only to be able to do CART with univariate splits.
> > >
> >
> > have a look at the machine learning task view on CRAN, which
> > will point you to package `RWeka'.
> >
> > HTH,
> >
> > Torsten
> >
> > > Thank you for your help!
> > >
> > > Bálint
> > >
> > > --
> > > Czúcz Bálint
> > > PhD hallgató
> > > BCE KTK Talajtan és Vízgazdálkodás Tanszék
> > > 1118 Budapest, Villányi út 29-43.
> > >
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>
>
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