Re: [R] plotcp() in rpart()

From: Yuelin Li <liy12_at_mskcc.org>
Date: Fri, 30 May 2008 15:18:25 -0400

   What happens if plotcp() shows an V-shape profile?    It seems that the predictors (I have a few) do not help the splits.    Would it be reasonable to prune it at size 6?    Or perhaps rpart() is not suitable for this analysis?

What I meant on the last sentence was perhaps I made a poor choice of the predictors to enter into rpart. They do not seem to be associated with the classes.

Yuelin.      


     
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