rp.deviance {treeClust}

Compute deviance within nodes of classification trees

Description

An rpart regression tree carries the deviance around (in the frame$dev element). This function computes the deviance for classification trees.

Usage

rp.deviance(x, ...)

Arguments

x

An object of class rpart

...

Other arguments, currently unused.

Details

For a vector of leaf counts n whose sum is N, the deviance is (-2) times the sum of n log (n/N), taking 0 log 0 as 0.

Value

Vector of deviances for every row in the tree's frame.

Author(s)

Sam Buttrey

See Also

rpart