[R] Tree anova?

Marc R. Feldesman feldesmanm at pdx.edu
Wed Nov 29 04:31:20 CET 2000


Frankly, I think Brian was gentle in his criticism of the reviewer.   My 
first thought when I wrote you privately about RPART and tree, was that I'd 
be real suspicious of a reviewer that ignorant.  I'd be even more wary of 
applying this technique based on the reviewer's dubious 
suggestion.  Perhaps the reviewer really did mean regression trees, but I 
doubt that anyone who ever *used* them would fall into the trap of calling 
them "anova trees".

I don't think Brian requires any defending.  He seems perfectly capable of 
defending himself <g>, but I think your reply was uncalled for.  The R user 
community owes a huge debt of gratitude to all those like Brian who give 
their time freely not only to this list but to the further development of R.



At 09:46 AM 11/28/00 -0800, Michael Camann wrote:
 >
 >> The reviewer is probably equally ignorant!  I think this means regression
 >> trees, and R packages tree and rpart (on CRAN) provide this.
 >
 >Charming as ever, Ripley.  Perhaps this list should be renamed the r-flame
 >list in honor of BDR's gentle, nurturing style.
 >
 >Seriously, thanks to all who responded-- it seems that the reviewer did
 >indeed mean regression trees, which the rpart and MASS docs describe
 >admirably.
 >
 >--Mike
 >
 >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 >Michael A. Camann                                  Voice: 707-826-3676
 >Assistant Professor of Zoology                       Fax: 707-826-3201
 >Institute for Forest Canopy Research     Email: mac24 at axe.humboldt.edu
 >Department of Biology                            ifcr at axe.humboldt.edu
 >Humboldt State University
 >Arcata, CA 95521
 >
 >                 URL:http://www.humboldt.edu/~mac24/
 >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 >
 >
 >
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Dr. Marc R. Feldesman
email:  feldesmanm at pdx.edu
email:  feldesman at attglobal.net
fax:    503-725-3905

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