prune.classbagg {ipred} | R Documentation |
Prune each of the trees returned by bagging
.
## S3 method for class 'classbagg': prune(tree, cp=0.01,...)
tree |
an object returned by bagging
(calling this tree is needed by the generic function
prune in package rpart ). |
cp |
complexity parameter, see prune.rpart . |
... |
additional arguments to prune.rpart . |
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.
An object of the same class as tree
with the trees pruned.
Torsten.Hothorn <Torsten.Hothorn@rzmail.uni-erlangen.de>
data(Glass) mod <- bagging(Type ~ ., data=Glass, nbagg=10, coob=TRUE) pmod <- prune(mod) print(pmod)