Package moa.streams.generators

Class RandomRBFGenerator

java.lang.Object

moa.AbstractMOAObject

moa.options.AbstractOptionHandler

moa.streams.generators.RandomRBFGenerator

All Implemented Interfaces:

Configurable, java.io.Serializable, CapabilitiesHandler, MOAObject, OptionHandler, ExampleStream<Example<Instance>>, InstanceStream

Direct Known Subclasses:

RandomRBFGeneratorDrift

public class RandomRBFGenerator
extends AbstractOptionHandler
implements InstanceStream, CapabilitiesHandler

Stream generator for a random radial basis function stream.

Version:

$Revision: 7 $

Author:

Richard Kirkby ([email protected])

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	RandomRBFGenerator.Centroid

Field Summary

Fields

Modifier and Type	Field	Description
protected RandomRBFGenerator.Centroid[]	centroids
protected double[]	centroidWeights
protected java.util.Random	instanceRandom
IntOption	instanceRandomSeedOption
IntOption	modelRandomSeedOption
IntOption	numAttsOption
IntOption	numCentroidsOption
IntOption	numClassesOption
protected InstancesHeader	streamHeader

Fields inherited from class moa.options.AbstractOptionHandler

config

Constructor Summary

Constructors

Constructor	Description
RandomRBFGenerator()

Method Summary

Modifier and Type	Method	Description
ImmutableCapabilities	defineImmutableCapabilities()	Defines the set of capabilities the object has.
long	estimatedRemainingInstances()	Gets the estimated number of remaining instances in this stream
protected void	generateCentroids()
protected void	generateHeader()
void	getDescription(java.lang.StringBuilder sb, int indent)	Returns a string representation of this object.
InstancesHeader	getHeader()	Gets the header of this stream.
java.lang.String	getPurposeString()	Dictionary with option texts and objects
boolean	hasMoreInstances()	Gets whether this stream has more instances to output.
boolean	isRestartable()	Gets whether this stream can restart.
InstanceExample	nextInstance()	Gets the next example from this stream.
void	prepareForUseImpl(TaskMonitor monitor, ObjectRepository repository)	This method describes the implementation of how to prepare this object for use.
void	restart()	Restarts this stream.

Methods inherited from class moa.AbstractMOAObject

copy, measureByteSize, measureByteSize, toString

Methods inherited from class moa.options.AbstractOptionHandler

copy, getCLICreationString, getOptions, getPreparedClassOption, prepareClassOptions, prepareForUse, prepareForUse

Methods inherited from interface moa.capabilities.CapabilitiesHandler

getCapabilities

Methods inherited from interface moa.MOAObject

copy, measureByteSize

Methods inherited from class java.lang.Object

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

Field Detail

modelRandomSeedOption

public IntOption modelRandomSeedOption

instanceRandomSeedOption

public IntOption instanceRandomSeedOption

numClassesOption

public IntOption numClassesOption

numAttsOption

public IntOption numAttsOption

numCentroidsOption

public IntOption numCentroidsOption

streamHeader

protected InstancesHeader streamHeader

centroids

protected RandomRBFGenerator.Centroid[] centroids

centroidWeights

protected double[] centroidWeights

instanceRandom

protected java.util.Random instanceRandom

Constructor Detail

RandomRBFGenerator

public RandomRBFGenerator()

Method Detail

getPurposeString

public java.lang.String getPurposeString()

Description copied from class: AbstractOptionHandler

Dictionary with option texts and objects

Specified by:

getPurposeString in interface OptionHandler

Overrides:

getPurposeString in class AbstractOptionHandler

Returns:

the string with the purpose of this object

prepareForUseImpl

public void prepareForUseImpl(TaskMonitor monitor,
                              ObjectRepository repository)

Description copied from class: AbstractOptionHandler

This method describes the implementation of how to prepare this object for use. All classes that extends this class have to implement prepareForUseImpl and not prepareForUse since prepareForUse calls prepareForUseImpl.

Specified by:

prepareForUseImpl in class AbstractOptionHandler

Parameters:

monitor - the TaskMonitor to use

repository - the ObjectRepository to use

getHeader

public InstancesHeader getHeader()

Description copied from interface: ExampleStream

Gets the header of this stream. This is useful to know attributes and classes. InstancesHeader is an extension of weka.Instances.

Specified by:

getHeader in interface ExampleStream<Example<Instance>>

Returns:

the header of this stream

estimatedRemainingInstances

public long estimatedRemainingInstances()

Description copied from interface: ExampleStream

Gets the estimated number of remaining instances in this stream

Specified by:

estimatedRemainingInstances in interface ExampleStream<Example<Instance>>

Returns:

the estimated number of instances to get from this stream

hasMoreInstances

public boolean hasMoreInstances()

Description copied from interface: ExampleStream

Gets whether this stream has more instances to output. This is useful when reading streams from files.

Specified by:

hasMoreInstances in interface ExampleStream<Example<Instance>>

Returns:

true if this stream has more instances to output

isRestartable

public boolean isRestartable()

Description copied from interface: ExampleStream

Gets whether this stream can restart.

Specified by:

isRestartable in interface ExampleStream<Example<Instance>>

Returns:

true if this stream can restart

restart

public void restart()

Description copied from interface: ExampleStream

Restarts this stream. It must be similar to starting a new stream from scratch.

Specified by:

restart in interface ExampleStream<Example<Instance>>

nextInstance

public InstanceExample nextInstance()

Description copied from interface: ExampleStream

Gets the next example from this stream.

Specified by:

nextInstance in interface ExampleStream<Example<Instance>>

Returns:

the next example of this stream

generateHeader

protected void generateHeader()

generateCentroids

protected void generateCentroids()

getDescription

public void getDescription(java.lang.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.

Specified by:

getDescription in interface MOAObject

Parameters:

sb - the stringbuilder to add the description

indent - the number of characters to indent

defineImmutableCapabilities

public ImmutableCapabilities defineImmutableCapabilities()

Description copied from interface: CapabilitiesHandler

Defines the set of capabilities the object has. Should be overridden if the object's capabilities do not change.

Specified by:

defineImmutableCapabilities in interface CapabilitiesHandler

Specified by:

defineImmutableCapabilities in interface ExampleStream<Example<Instance>>

Returns:

The capabilities of the object.