Catalano.MachineLearning.Performance

Class KFoldCrossValidation

java.lang.Object

Catalano.MachineLearning.Performance.KFoldCrossValidation

All Implemented Interfaces:

IValidation

public class KFoldCrossValidation
extends java.lang.Object
implements IValidation

KFold Cross Validation.

Constructor Summary

Constructors

Constructor and Description
KFoldCrossValidation() Initializes a new instance of the KFoldCrossValidation class.
KFoldCrossValidation(int nFolds) Initializes a new instance of the KFoldCrossValidation class.
KFoldCrossValidation(int nFolds, boolean shuffle) Initializes a new instance of the KFoldCrossValidation class.
KFoldCrossValidation(int nFolds, boolean shuffle, long seed) Initializes a new instance of the KFoldCrossValidation class.

Method Summary

Modifier and Type	Method and Description
int	getNumberOfFolds() Get number of the folds.
boolean	isShuffle() Checks if the indexes are going to be shuffled.
double	Run(IClassifier classifier, DatasetClassification dataset) Compute validation.
double	Run(IClassifier classifier, double[][] data, int[] labels) Compute validation.
void	setNumberOfFolds(int folds) Set number of the folds.
void	setShuffle(boolean shuffle) Set true if the indexes are going to be shuffled.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

KFoldCrossValidation

public KFoldCrossValidation()

Initializes a new instance of the KFoldCrossValidation class.

KFoldCrossValidation

public KFoldCrossValidation(int nFolds)

Initializes a new instance of the KFoldCrossValidation class.

Parameters:

nFolds - Number of folds.

KFoldCrossValidation

public KFoldCrossValidation(int nFolds,
                            boolean shuffle)

Initializes a new instance of the KFoldCrossValidation class.

Parameters:

nFolds - Number of folds.

shuffle - Shuffle the indexes.

KFoldCrossValidation

public KFoldCrossValidation(int nFolds,
                            boolean shuffle,
                            long seed)

Initializes a new instance of the KFoldCrossValidation class.

Parameters:

nFolds - Number of folds.

shuffle - Shuffle the indexes.

seed - Random seed generator.

Method Detail

getNumberOfFolds

public int getNumberOfFolds()

Get number of the folds.

Returns:

Number of the folds.

setNumberOfFolds

public void setNumberOfFolds(int folds)

Set number of the folds.

Parameters:

folds - Folds.

isShuffle

public boolean isShuffle()

Checks if the indexes are going to be shuffled.

Returns:

True if the indexes are going to be shuffled, othwerwise return false.

setShuffle

public void setShuffle(boolean shuffle)

Set true if the indexes are going to be shuffled.

Parameters:

shuffle - Indexes are going to be shuffled.

Run

public double Run(IClassifier classifier,
                  DatasetClassification dataset)

Description copied from interface: IValidation

Compute validation.

Specified by:

Run in interface IValidation

Parameters:

classifier - Classifier.

dataset - Dataset.

Returns:

Correctly classified rate.

Run

public double Run(IClassifier classifier,
                  double[][] data,
                  int[] labels)

Description copied from interface: IValidation

Compute validation.

Specified by:

Run in interface IValidation

Parameters:

classifier - Classifier.

data - Data.

labels - Labels.

Returns:

Correctly classified rate.