moa.classifiers.core.conditionaltests

Class NominalAttributeBinaryTest

java.lang.Object

moa.AbstractMOAObject

moa.classifiers.core.conditionaltests.InstanceConditionalTest

moa.classifiers.core.conditionaltests.InstanceConditionalBinaryTest

moa.classifiers.core.conditionaltests.NominalAttributeBinaryTest

All Implemented Interfaces:

Serializable, MOAObject

Direct Known Subclasses:

NominalAttributeBinaryRulePredicate

public class NominalAttributeBinaryTest
extends InstanceConditionalBinaryTest

Nominal binary conditional test for instances to use to split nodes in Hoeffding trees.

Version:

$Revision: 7 $

Author:

Richard Kirkby (rkirkby@cs.waikato.ac.nz)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	attIndex
protected int	attValue

Constructor Summary

Constructors

Constructor and Description
NominalAttributeBinaryTest(int attIndex, int attValue)

Method Summary

Methods

Modifier and Type	Method and Description
int	branchForInstance(weka.core.Instance inst) Returns the number of the branch for an instance, -1 if unknown.
String	describeConditionForBranch(int branch, InstancesHeader context) Gets the text that describes the condition of a branch.
int[]	getAttsTestDependsOn() Returns an array with the attributes that the test depends on.
void	getDescription(StringBuilder sb, int indent) Returns a string representation of this object.

Methods inherited from class moa.classifiers.core.conditionaltests.InstanceConditionalBinaryTest

maxBranches

Methods inherited from class moa.classifiers.core.conditionaltests.InstanceConditionalTest

resultKnownForInstance

Methods inherited from class moa.AbstractMOAObject

copy, copy, measureByteSize, measureByteSize, toString

Methods inherited from class java.lang.Object

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

Field Detail

attIndex

protected int attIndex

attValue

protected int attValue

Constructor Detail

NominalAttributeBinaryTest

public NominalAttributeBinaryTest(int attIndex,
                          int attValue)

Method Detail

branchForInstance

public int branchForInstance(weka.core.Instance inst)

Description copied from class: InstanceConditionalTest

Returns the number of the branch for an instance, -1 if unknown.

Specified by:

branchForInstance in class InstanceConditionalTest

Parameters:

inst - the instance to be used

Returns:

the number of the branch for an instance, -1 if unknown.

describeConditionForBranch

public String describeConditionForBranch(int branch,
                                InstancesHeader context)

Description copied from class: InstanceConditionalTest

Gets the text that describes the condition of a branch. It is used to describe the branch.

Specified by:

describeConditionForBranch in class InstanceConditionalTest

Parameters:

branch - the number of the branch to describe

context - the context or header of the data stream

Returns:

the text that describes the condition of the branch

getDescription

public void getDescription(StringBuilder sb,
                  int indent)

Description copied from interface: MOAObject

Returns a string representation of this object. Used in AbstractMOAObject.toString to give a string representation of the object.

Parameters:

sb - the stringbuilder to add the description

indent - the number of characters to indent

getAttsTestDependsOn

public int[] getAttsTestDependsOn()

Description copied from class: InstanceConditionalTest

Returns an array with the attributes that the test depends on.

Specified by:

getAttsTestDependsOn in class InstanceConditionalTest

Returns:

an array with the attributes that the test depends on