Package moa.streams.filters

Class AddNoiseFilter

java.lang.Object

moa.AbstractMOAObject

moa.options.AbstractOptionHandler

moa.streams.filters.AbstractStreamFilter

moa.streams.filters.AddNoiseFilter

All Implemented Interfaces:

Configurable, java.io.Serializable, CapabilitiesHandler, MOAObject, OptionHandler, ExampleStream, StreamFilter

public class AddNoiseFilter
extends AbstractStreamFilter

Filter for adding random noise to examples in a stream. Noise can be added to attribute values or to class labels.

Version:

$Revision: 7 $

Author:

Richard Kirkby ([email protected])

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
FloatOption	attNoiseFractionOption
protected AutoExpandVector<java.lang.Object>	attValObservers
FloatOption	classNoiseFractionOption
protected java.util.Random	random
IntOption	randomSeedOption

Fields inherited from class moa.options.AbstractOptionHandler

config

Fields inherited from class moa.streams.filters.AbstractStreamFilter

inputStream

Constructor Summary

Constructors

Constructor	Description
AddNoiseFilter()

Method Summary

Modifier and Type	Method	Description
Instance	filterInstance(Instance inst)
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
protected void	restartImpl()	Restarts this filter.

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 class moa.streams.filters.AbstractStreamFilter

estimatedRemainingInstances, hasMoreInstances, isRestartable, nextInstance, prepareForUseImpl, restart, setInputStream

Methods inherited from interface moa.capabilities.CapabilitiesHandler

getCapabilities

Methods inherited from interface moa.streams.ExampleStream

defineImmutableCapabilities

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

randomSeedOption

public IntOption randomSeedOption

attNoiseFractionOption

public FloatOption attNoiseFractionOption

classNoiseFractionOption

public FloatOption classNoiseFractionOption

random

protected java.util.Random random

attValObservers

protected AutoExpandVector<java.lang.Object> attValObservers

Constructor Detail

AddNoiseFilter

public AddNoiseFilter()

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

restartImpl

protected void restartImpl()

Description copied from class: AbstractStreamFilter

Restarts this filter. All instances that extends from AbstractStreamFilter must implement restartImpl. restart uses restartImpl in AbstractStreamFilter.

Specified by:

restartImpl in class AbstractStreamFilter

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.

Returns:

the header of this stream

filterInstance

public Instance filterInstance(Instance inst)

Specified by:

filterInstance in interface StreamFilter

Overrides:

filterInstance in class AbstractStreamFilter

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.

Parameters:

sb - the stringbuilder to add the description

indent - the number of characters to indent