Package weka.classifiers.rules.part

Class C45PruneableDecList

java.lang.Object

weka.classifiers.rules.part.ClassifierDecList

weka.classifiers.rules.part.C45PruneableDecList

All Implemented Interfaces:

Serializable, RevisionHandler

public class C45PruneableDecList
extends ClassifierDecList

Class for handling a partial tree structure pruned using C4.5's pruning heuristic.

Version:

$Revision: 10153 $

Author:

Eibe Frank (eibe@cs.waikato.ac.nz)

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
C45PruneableDecList(ModelSelection toSelectLocModel, double cf, int minNum)	Constructor for pruneable tree structure.

Method Summary

Modifier and Type	Method	Description
void	buildDecList(Instances data, boolean leaf)	Builds the partial tree without hold out set.
double	getEstimatedErrorsForLeaf()	Computes estimated errors for leaf.
String	getRevision()	Returns the revision string.

Methods inherited from class weka.classifiers.rules.part.ClassifierDecList

buildRule, chooseIndex, chooseLastIndex, classifyInstance, cleanup, distributionForInstance, toString, weight

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

C45PruneableDecList

public C45PruneableDecList(ModelSelection toSelectLocModel,
 double cf,
 int minNum)
                    throws Exception

Constructor for pruneable tree structure. Stores reference to associated training data at each node.

Parameters:

toSelectLocModel - selection method for local splitting model

cf - the confidence factor for pruning

minNum - the minimum number of objects in a leaf

Throws:

Exception - if something goes wrong

Method Details

buildDecList

public void buildDecList(Instances data,
 boolean leaf)
                  throws Exception

Builds the partial tree without hold out set.

Overrides:

buildDecList in class ClassifierDecList

Throws:

Exception - if something goes wrong

getEstimatedErrorsForLeaf

public double getEstimatedErrorsForLeaf()

Computes estimated errors for leaf.

getRevision

public String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Overrides:

getRevision in class ClassifierDecList

Returns:

the revision