I need to understand how the splitting criteria works in these two packages, while growing a tree, and I was unable to do so by reading the respective documentation. Can anyone explain to me the process, or point out where I can find a good explanation online?
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Have you tried to google their vignettes? For example, the vignettes for rpart details how the package uses the Gini index to build a tree, cross-validation to prune it.
In general, vignette is the first thing you should check for any R package.
answered Oct 9, 2015 at 1:27
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$\begingroup$ I have read the rpart vignette, and I was finding a bit difficult to understand it, therefore I tried to find it somewhere, without any luck. But I found no information regarding the splitting criteria within the tree package vignette. $\endgroup$ Commented Oct 9, 2015 at 10:44