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Re: DM: RE: Pruning methods


From: Kathryn Horne
Date: Thu, 16 Mar 2000 12:38:19 -0800

The CART(r) Monograph is available through CRC Press.  You will find a link
to them on our webside on the CART products page.  You will also find a
brief discussion of splitting rules within the white papers.

At 04:00 PM 3/15/00 +0000, you wrote:
 >
 >Donal Lyons wrote:
 >
 > > For CART the definitive book is Leo Breiman et al., Classification and
 > > Regression Trees (CART), Wadsworth & Brooks, 1984.
 >
 >I heard a rumour that this has long been out of print, and has recently
 >been reprinted by somebody. Although amazon still quote 4-6 weeks
 >on the original. I would be pleased to receive clarification if anybody
 >knows the true situation.
 >
 >The original poster may also be interested in
 >http://www.amstat.org/publications/jcgs/abstracts98/leblanc.html
 >Monotone Shrinkage of Trees
 >Michael LeBlanc and Robert Tibshirani
 >We investigate a new method for regression trees which obtains
 >estimates and predictions subject to constraints on the coefficients
 >representing the effects of splits in the tree. The procedure leads
 >to both shrinking of the node estimates and pruning of branches in
 >the tree and for some problems gives better predictions than cost-
 >complexity pruning used in the classification and regression tree
 >(CART) algorithm. The new method is based on the least absolute
 >shrinkage and selection operator (LASSO) method developed by
 >Tibshirani.
 >
 >Peter
 >
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Kathryn Horne
Managing Director
Salford Systems
8880 Rio San Diego Drive, Suite 1045
San Diego, CA 92108
619.543.8880


http://www.salford-systems.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~




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