Package weka.classifiers

Class AbstractSplitGenerator

java.lang.Object

adams.core.logging.LoggingObject

adams.core.logging.CustomLoggingLevelObject

adams.core.option.AbstractOptionHandler

weka.classifiers.AbstractSplitGenerator

All Implemented Interfaces:

Destroyable, GlobalInfoSupporter, LoggingLevelHandler, LoggingSupporter, OptionHandler, Randomizable, SizeOfHandler, SplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>, InstancesViewSupporter, Serializable, Iterator<WekaTrainTestSetContainer>, SplitGenerator

Direct Known Subclasses:

BestBinnedNumericClassRandomSplitGenerator, BinnedNumericClassCrossValidationFoldGenerator, BinnedNumericClassRandomSplitGenerator, DefaultCrossValidationFoldGenerator, DefaultRandomSplitGenerator, GroupedBinnedNumericClassCrossValidationFoldGenerator, GroupedBinnedNumericClassRandomSplitGenerator, GroupedCrossValidationFoldGenerator, GroupedCrossValidationFoldGeneratorUsingNumericClassValues, GroupedRandomSplitGenerator, LeaveOneOutByValueGenerator, MultiLevelSplitGenerator

public abstract class AbstractSplitGenerator
extends AbstractOptionHandler
implements SplitGenerator

Ancestor for helper classes that generates dataset splits.

Author:

fracpete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected weka.core.Instances	m_Data	the original dataset.
protected boolean	m_Initialized	whether the iterator has been initialized.
protected gnu.trove.list.TIntList	m_OriginalIndices	the original indicies.
protected long	m_Seed	the seed value.
protected boolean	m_UseViews	whether to use views.

Fields inherited from class adams.core.option.AbstractOptionHandler

m_OptionManager

Fields inherited from class adams.core.logging.LoggingObject

m_Logger, m_LoggingIsEnabled, m_LoggingLevel

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractSplitGenerator()	Initializes the generator.

Method Summary

Modifier and Type	Method	Description
protected abstract boolean	canRandomize()	Returns whether randomization is enabled.
protected abstract boolean	checkNext()	Returns true if the iteration has more elements.
protected abstract WekaTrainTestSetContainer	createNext()	Creates the next result.
void	defineOptions()	Adds options to the internal list of options.
protected abstract void	doInitializeIterator()	Initializes the iterator, randomizes the data if required.
weka.core.Instances	getData()	Returns the original data.
long	getSeed()	Returns the seed value.
boolean	getUseViews()	Returns whether to use views.
boolean	hasNext()	Returns true if the iteration has more elements.
protected void	initialize()	Initializes the members.
void	initializeIterator()	Initializes the iterator, randomizes the data if required.
WekaTrainTestSetContainer	next()	Returns the next element in the iteration.
protected void	randomize(gnu.trove.list.TIntList indices, Random random)	Randomizes the indices using the given random number generator.
void	remove()	Unsupported.
protected void	reset()	Resets the generator.
String	seedTipText()	Returns the tip text for this property.
void	setData(weka.core.Instances value)	Sets the original data.
void	setSeed(long value)	Sets the seed value.
void	setUseViews(boolean value)	Sets whether to uses views only.
String	toString()	Returns a short description of the generator.
String	useViewsTipText()	Returns the tip text for this property.

Methods inherited from class adams.core.option.AbstractOptionHandler

cleanUpOptions, destroy, finishInit, getDefaultLoggingLevel, getOptionManager, globalInfo, loggingLevelTipText, newOptionManager, setLoggingLevel, toCommandLine

Methods inherited from class adams.core.logging.LoggingObject

configureLogger, getLogger, getLoggingLevel, initializeLogging, isLoggingEnabled, sizeOf

Methods inherited from class java.lang.Object

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

Methods inherited from interface adams.core.Destroyable

destroy

Methods inherited from interface java.util.Iterator

forEachRemaining

Methods inherited from interface adams.core.logging.LoggingLevelHandler

getLoggingLevel

Methods inherited from interface adams.core.option.OptionHandler

cleanUpOptions, getOptionManager, toCommandLine

Field Detail

m_Seed

protected long m_Seed

the seed value.

m_UseViews

protected boolean m_UseViews

whether to use views.

m_Data

protected weka.core.Instances m_Data

the original dataset.

m_Initialized

protected boolean m_Initialized

whether the iterator has been initialized.

m_OriginalIndices

protected gnu.trove.list.TIntList m_OriginalIndices

the original indicies.

Constructor Detail

AbstractSplitGenerator

protected AbstractSplitGenerator()

Initializes the generator.

Method Detail

defineOptions

public void defineOptions()

Adds options to the internal list of options.

Specified by:

defineOptions in interface OptionHandler

Overrides:

defineOptions in class AbstractOptionHandler

initialize

protected void initialize()

Initializes the members.

Overrides:

initialize in class AbstractOptionHandler

reset

protected void reset()

Resets the generator.

Overrides:

reset in class AbstractOptionHandler

setData

public void setData(weka.core.Instances value)

Sets the original data.

Specified by:

setData in interface SplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Specified by:

setData in interface SplitGenerator

Parameters:

value - the data

getData

public weka.core.Instances getData()

Returns the original data.

Specified by:

getData in interface SplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Specified by:

getData in interface SplitGenerator

Returns:

the data

setSeed

public void setSeed(long value)

Sets the seed value.

Specified by:

setSeed in interface Randomizable

Parameters:

value - the seed

getSeed

public long getSeed()

Returns the seed value.

Specified by:

getSeed in interface Randomizable

Returns:

the seed

seedTipText

public String seedTipText()

Returns the tip text for this property.

Specified by:

seedTipText in interface Randomizable

Returns:

tip text for this property suitable for displaying in the GUI or for listing the options.

setUseViews

public void setUseViews(boolean value)

Sets whether to uses views only.

Specified by:

setUseViews in interface InstancesViewSupporter

Parameters:

value - true if to uses views

getUseViews

public boolean getUseViews()

Returns whether to use views.

Specified by:

getUseViews in interface InstancesViewSupporter

Returns:

true if to uses views

useViewsTipText

public String useViewsTipText()

Returns the tip text for this property.

Returns:

tip text for this property suitable for displaying in the GUI or for listing the options.

canRandomize

protected abstract boolean canRandomize()

Returns whether randomization is enabled.

Returns:

true if to randomize

checkNext

protected abstract boolean checkNext()

Returns true if the iteration has more elements. (In other words, returns true if next would return an element rather than throwing an exception.)

Returns:

true if the iterator has more elements.

hasNext

public boolean hasNext()

Returns true if the iteration has more elements. (In other words, returns true if next would return an element rather than throwing an exception.)

Specified by:

hasNext in interface Iterator<WekaTrainTestSetContainer>

Specified by:

hasNext in interface SplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Specified by:

hasNext in interface SplitGenerator

Returns:

true if the iterator has more elements.

randomize

protected void randomize(gnu.trove.list.TIntList indices,
                         Random random)

Randomizes the indices using the given random number generator.

Parameters:

indices - the indices to randomize inplace

random - the random number generator to use

doInitializeIterator

protected abstract void doInitializeIterator()

Initializes the iterator, randomizes the data if required.

See Also:

canRandomize()

initializeIterator

public void initializeIterator()

Initializes the iterator, randomizes the data if required.

Specified by:

initializeIterator in interface SplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Specified by:

initializeIterator in interface SplitGenerator

See Also:

canRandomize()

createNext

protected abstract WekaTrainTestSetContainer createNext()

Creates the next result.

Returns:

the next result

next

public WekaTrainTestSetContainer next()

Returns the next element in the iteration.

Specified by:

next in interface Iterator<WekaTrainTestSetContainer>

Specified by:

next in interface SplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Specified by:

next in interface SplitGenerator

Returns:

the next element in the iteration.

Throws:

NoSuchElementException - iteration has no more elements.

remove

public void remove()

Unsupported.

Specified by:

remove in interface Iterator<WekaTrainTestSetContainer>

Specified by:

remove in interface SplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Specified by:

remove in interface SplitGenerator

toString

public String toString()

Returns a short description of the generator.

Specified by:

toString in interface SplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Specified by:

toString in interface SplitGenerator

Overrides:

toString in class AbstractOptionHandler

Returns:

a short description