[R] rpart - plotcp find specificity and sensitivity

[Parsa Akbari]

Hi,

I am using rpart to build a decision tree, I am then using printcp to find
the cross-validation error (xerror) of different splits of the decision
tree.

I was wondering how I can use the rpart package to find sensitivity (false
negative) and specificity (false positive) of cross-validation folds?

In addition I was wondering how many cross-validation folds does printcp
uses?

Thanks for your help.

Regards,
Parsa

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