moa.classifiers.core.conditionaltests

Class InstanceConditionalTest

java.lang.Object

moa.AbstractMOAObject

moa.classifiers.core.conditionaltests.InstanceConditionalTest

All Implemented Interfaces:

Serializable, MOAObject

Direct Known Subclasses:

InstanceConditionalBinaryTest, NominalAttributeMultiwayTest

public abstract class InstanceConditionalTest
extends AbstractMOAObject

Abstract 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

Constructor Summary

Constructors

Constructor and Description
InstanceConditionalTest()

Method Summary

Methods

Modifier and Type	Method and Description
abstract int	branchForInstance(weka.core.Instance inst) Returns the number of the branch for an instance, -1 if unknown.
abstract String	describeConditionForBranch(int branch, InstancesHeader context) Gets the text that describes the condition of a branch.
abstract int[]	getAttsTestDependsOn() Returns an array with the attributes that the test depends on.
abstract int	maxBranches() Gets the number of maximum branches, -1 if unknown.
boolean	resultKnownForInstance(weka.core.Instance inst) Gets whether the number of the branch for an instance is known.

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

Methods inherited from interface moa.MOAObject

getDescription

Constructor Detail

InstanceConditionalTest

public InstanceConditionalTest()

Method Detail

branchForInstance

public abstract int branchForInstance(weka.core.Instance inst)

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

Parameters:

inst - the instance to be used

Returns:

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

resultKnownForInstance

public boolean resultKnownForInstance(weka.core.Instance inst)

Gets whether the number of the branch for an instance is known.

Parameters:

inst -

Returns:

true if the number of the branch for an instance is known

maxBranches

public abstract int maxBranches()

Gets the number of maximum branches, -1 if unknown.

Returns:

the number of maximum branches, -1 if unknown..

describeConditionForBranch

public abstract String describeConditionForBranch(int branch,
                                InstancesHeader context)

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

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

getAttsTestDependsOn

public abstract int[] getAttsTestDependsOn()

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

Returns:

an array with the attributes that the test depends on