edu.umass.cs.mallet.base.classify

Class C45

java.lang.Object

edu.umass.cs.mallet.base.classify.Classifier

edu.umass.cs.mallet.base.classify.C45

All Implemented Interfaces:

Boostable, Serializable

public class C45
extends Classifier
implements Boostable, Serializable

A C4.5 Decision Tree classifier.

Author:

Gary Huang ghuang@cs.umass.edu

See Also:

C45Trainer, Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	C45.Node

Field Summary

Fields inherited from class edu.umass.cs.mallet.base.classify.Classifier

instancePipe

Constructor Summary

Constructors

Constructor and Description
C45(Pipe instancePipe, C45.Node root)

Method Summary

Modifier and Type	Method and Description
Classification	classify(Instance instance)
C45.Node	getRoot()
int	getSize()
void	print() Prints the tree
void	prune() Prune the tree using minimum description length

Methods inherited from class edu.umass.cs.mallet.base.classify.Classifier

classify, classify, classify, getAccuracy, getAccuracy, getAlphabet, getF1, getF1, getF1, getF1, getInstancePipe, getLabelAlphabet, getPrecision, getPrecision, getPrecision, getPrecision, getRecall, getRecall, getRecall, getRecall, print

Methods inherited from class java.lang.Object

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

Constructor Detail

C45

public C45(Pipe instancePipe,
           C45.Node root)

Method Detail

getRoot

public C45.Node getRoot()

classify

public Classification classify(Instance instance)

Specified by:

classify in class Classifier

prune

public void prune()

Prune the tree using minimum description length

getSize

public int getSize()

Returns:

the total number of nodes in this tree

print

public void print()

Prints the tree

Overrides:

print in class Classifier