prune.classbagg {ipred} | R Documentation |
Pruning for Bagging
Description
Prune each of the trees returned by bagging
.
Usage
## S3 method for class 'classbagg'
prune(tree, cp=0.01,...)
Arguments
tree |
an object returned by |
cp |
complexity parameter, see |
... |
additional arguments to |
Details
By default, bagging
grows classification
trees of maximal size. One may want to prune each tree, however,
it is not clear whether or not this may decrease prediction error.
Value
An object of the same class as tree
with the trees pruned.
Examples
data("Glass", package = "mlbench")
library("rpart")
mod <- bagging(Type ~ ., data=Glass, nbagg=10, coob=TRUE)
pmod <- prune(mod)
print(pmod)
[Package ipred version 0.9-15 Index]