prune.rpart
Cost-complexity Pruning of an Rpart Object
Description
Determines a nested sequence of subtrees of the supplied rpart
object by recursively snipping
off the least important splits, based on the complexity parameter (cp
).
Usage
prune(tree, ...) ## S3 method for class 'rpart' prune(tree, cp, ...)
Arguments
tree | fitted model object of class |
cp | Complexity parameter to which the |
... | further arguments passed to or from other methods. |
Value
A new rpart
object that is trimmed to the value cp
.
See Also
Examples
z.auto <- rpart(Mileage ~ Weight, car.test.frame) zp <- prune(z.auto, cp = 0.1) plot(zp) #plot smaller rpart object
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Licensed under the GNU General Public License.