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dstreg
2005 Oct 12
0
Variance explained in regression trees?
...ar to a
complexity penalty for having a tree with many branches when a simpler one
would be just as robust. How can I use the values and error bars to
interpret what is the "optimal" sized tree?
My other question is as follows; other statistical packages (I'm thinking
specifically of DTREG) that build regression trees are able to produce a
model summary that explains initial variance, amount of variance explained
by the tree, and unexplained variance. From this information, an estimated
R-sqr is calculated that provides some indication of how well the tree
"fits."
Does R p...