[R] Importance measure in Rpart or Tree

[Shuguang Chen]

Hi, all
I wonder whether anyone can tell me whether there is an importance measure
of variables for classification and regression trees in Rpart or Tree. I
know Tree in the SAS Enterprise Miner has importance table where list all
the varialbes in the tree model and correspoding importance for the whole
tree.

Thank you.
Shuguang Chen

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