Package weka.classifiers

Interface CrossValidationFoldGenerator

All Superinterfaces:

CrossValidationFoldGenerator<weka.core.Instances,WekaTrainTestSetContainer>, Destroyable, InstancesViewSupporter, Iterator<WekaTrainTestSetContainer>, OptionHandler, Randomizable, Serializable, SplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>, SplitGenerator, StratifiableSplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>

All Known Implementing Classes:

BinnedNumericClassCrossValidationFoldGenerator, DefaultCrossValidationFoldGenerator, GroupedBinnedNumericClassCrossValidationFoldGenerator, GroupedCrossValidationFoldGenerator, GroupedCrossValidationFoldGeneratorUsingNumericClassValues

public interface CrossValidationFoldGenerator
extends SplitGenerator, CrossValidationFoldGenerator<weka.core.Instances,WekaTrainTestSetContainer>, StratifiableSplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Interface for generating cross-validation folds.

The template for the relation name accepts the following placeholders:

Author:

fracpete (fracpete at waikato dot ac dot nz)

Method Summary

Modifier and Type	Method	Description
int[]	crossValidationIndices()	Returns the cross-validation indices.
int	getActualNumFolds()	Returns the actual number of folds used (eg when using LOO).
int	getNumFolds()	Returns the number of folds.
boolean	getRandomize()	Returns whether to randomize the data.
String	getRelationName()	Returns the relation name template.
boolean	getStratify()	Returns whether to stratify the data (in case of nominal class).
void	setNumFolds(int value)	Sets the number of folds to use.
void	setRandomize(boolean value)	Sets whether to randomize the data.
void	setRelationName(String value)	Sets the template for the relation name.
void	setStratify(boolean value)	Sets whether to stratify the data (nominal class).

Methods inherited from interface adams.core.Destroyable

destroy

Methods inherited from interface adams.data.weka.InstancesViewSupporter

getUseViews, setUseViews

Methods inherited from interface java.util.Iterator

forEachRemaining

Methods inherited from interface adams.core.option.OptionHandler

cleanUpOptions, defineOptions, getOptionManager, toCommandLine

Methods inherited from interface adams.core.Randomizable

getSeed, seedTipText, setSeed

Methods inherited from interface weka.classifiers.SplitGenerator

getData, hasNext, initializeIterator, next, remove, setData, toString

Method Detail

setNumFolds

void setNumFolds(int value)

Sets the number of folds to use.

Specified by:

setNumFolds in interface CrossValidationFoldGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Parameters:

value - the number of folds, less than 2 for LOO

getNumFolds

int getNumFolds()

Returns the number of folds.

Specified by:

getNumFolds in interface CrossValidationFoldGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Returns:

the number of folds

getActualNumFolds

int getActualNumFolds()

Returns the actual number of folds used (eg when using LOO).

Specified by:

getActualNumFolds in interface CrossValidationFoldGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Returns:

the actual number of folds

setRandomize

void setRandomize(boolean value)

Sets whether to randomize the data.

Specified by:

setRandomize in interface CrossValidationFoldGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Parameters:

value - true if to randomize the data

getRandomize

boolean getRandomize()

Returns whether to randomize the data.

Specified by:

getRandomize in interface CrossValidationFoldGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Returns:

true if to randomize the data

setStratify

void setStratify(boolean value)

Sets whether to stratify the data (nominal class).

Specified by:

setStratify in interface StratifiableSplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Parameters:

value - whether to stratify the data (nominal class)

getStratify

boolean getStratify()

Returns whether to stratify the data (in case of nominal class).

Specified by:

getStratify in interface StratifiableSplitGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Returns:

true if to stratify

setRelationName

void setRelationName(String value)

Sets the template for the relation name.

Parameters:

value - the template

getRelationName

String getRelationName()

Returns the relation name template.

Returns:

the template

crossValidationIndices

int[] crossValidationIndices()

Returns the cross-validation indices.

Specified by:

crossValidationIndices in interface CrossValidationFoldGenerator<weka.core.Instances,WekaTrainTestSetContainer>

Returns:

the indices