weka.classifiers.rules.part

Class PruneableDecList

java.lang.Object

weka.classifiers.rules.part.ClassifierDecList

weka.classifiers.rules.part.PruneableDecList

All Implemented Interfaces:

java.io.Serializable, RevisionHandler

public class PruneableDecList
extends ClassifierDecList

Class for handling a partial tree structure that can be pruned using a pruning set.

See Also:

Serialized Form

Field Summary

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

indeX, m_isEmpty, m_isLeaf, m_localModel, m_minNumObj, m_sons, m_splitCrit, m_test, m_toSelectModel, m_train

Constructor Summary

Constructors

Constructor and Description
PruneableDecList(ModelSelection toSelectLocModel, int minNum) Constructor for pruneable partial tree structure.

Method Summary

Modifier and Type	Method and Description
void	buildDecList(Instances train, Instances test, boolean leaf) Builds the partial tree with hold out set
void	buildRule(Instances train, Instances test) Method for building a pruned partial tree.
protected ClassifierDecList	getNewDecList(Instances train, Instances test, boolean leaf) Returns a newly created tree.
java.lang.String	getRevision() Returns the revision string.
protected void	pruneEnd() Prunes the end of the rule.

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

buildDecList, buildRule, chooseIndex, chooseLastIndex, classifyInstance, cleanup, distributionForInstance, getNewDecList, getSizeOfBranch, localModel, son, toString, weight

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PruneableDecList

public PruneableDecList(ModelSelection toSelectLocModel,
                        int minNum)

Constructor for pruneable partial tree structure.

Parameters:

toSelectLocModel - selection method for local splitting model

minNum - minimum number of objects in leaf

Method Detail

buildRule

public void buildRule(Instances train,
                      Instances test)
               throws java.lang.Exception

Method for building a pruned partial tree.

Throws:

java.lang.Exception - if tree can't be built successfully

buildDecList

public void buildDecList(Instances train,
                         Instances test,
                         boolean leaf)
                  throws java.lang.Exception

Builds the partial tree with hold out set

Throws:

java.lang.Exception - if something goes wrong

getNewDecList

protected ClassifierDecList getNewDecList(Instances train,
                                          Instances test,
                                          boolean leaf)
                                   throws java.lang.Exception

Returns a newly created tree.

Parameters:

train - train data

test - test data

leaf -

Throws:

java.lang.Exception - if something goes wrong

pruneEnd

protected void pruneEnd()
                 throws java.lang.Exception

Prunes the end of the rule.

Throws:

java.lang.Exception

getRevision

public java.lang.String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Overrides:

getRevision in class ClassifierDecList

Returns:

the revision