jbnc.measures
Class QualityMeasureLCV

java.lang.Object
  jbnc.measures.QualityMeasure
      jbnc.measures.QualityMeasureLCV

public class QualityMeasureLCV

extends QualityMeasure

LCV - Local Cross Validation. Measure the quality of the bayesian network on the dataset using local cross validation (on class variable). By default 10-fold 1-time cross validation will be performed.

Since:

June 1, 1999

Author:

Jarek Sacha

Field Summary

protected int	cvFolds Number of cross-validation folds.
protected int	cvTimes Number of times the cross validation is repeated (averaged).
protected FrequencyCalc[][]	fc
protected jbnc.measures.QualityMeasureLogC	logC
protected DatasetInt	testDataset
protected java.util.Vector[][]	testSets
protected DatasetInt	trainDataset

Fields inherited from class jbnc.measures.QualityMeasure

alphaK, dataset, usePriors

Constructor Summary

QualityMeasureLCV()
Constructor for the QualityMeasureLCV object

QualityMeasureLCV(DatasetInt dataset, int cvFolds)
Create quality measure for given a dataset and a number of cross-validation folds.

QualityMeasureLCV(DatasetInt dataset, int cvFolds, int cvTimes)
Create quality measure for given a dataset and a number of cross-validation folds and a number of cross-validation repetitions.

QualityMeasureLCV(int cvFolds)
Create quality measure for given a number of cross-validation folds.

QualityMeasureLCV(int cvFolds, int cvTimes)
Create quality measure for given a number of cross-validation folds and a number of cross-validation repetitions.

Method Summary

double	evaluate(BayesianNetworks.BayesNet net) Description of the Method
int	getCVFolds() Gets the number of cross-validation folds.
int	getCVTimes() Gets the number of times the cross validation is repeated (averaged).
java.lang.String	getName() Gets the Name attribute of the QualityMeasureLCV object
void	setDataset(DatasetInt dataset) Sets dataset used for grading Bayesian networks.

Methods inherited from class jbnc.measures.QualityMeasure

getAlphaK, getUsePriors, setAlphaK, setUsePriors

Methods inherited from class java.lang.Object

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

Field Detail

logC

protected jbnc.measures.QualityMeasureLogC logC

testSets

protected java.util.Vector[][] testSets

trainDataset

protected DatasetInt trainDataset

testDataset

protected DatasetInt testDataset

fc

protected FrequencyCalc[][] fc

cvFolds

protected int cvFolds

Number of cross-validation folds.

cvTimes

protected int cvTimes

Number of times the cross validation is repeated (averaged).

Constructor Detail

QualityMeasureLCV

public QualityMeasureLCV()

Constructor for the QualityMeasureLCV object

QualityMeasureLCV

public QualityMeasureLCV(int cvFolds)

Create quality measure for given a number of cross-validation folds. Number of cross-validation repetitions is set to 1.

Parameters:

cvFolds - Description of Parameter

QualityMeasureLCV

public QualityMeasureLCV(DatasetInt dataset,
                         int cvFolds)

Create quality measure for given a dataset and a number of cross-validation folds. Number of cross-validation repetitions is set to 1.

Parameters:

dataset - Description of Parameter

cvFolds - Description of Parameter

QualityMeasureLCV

public QualityMeasureLCV(int cvFolds,
                         int cvTimes)

Create quality measure for given a number of cross-validation folds and a number of cross-validation repetitions.

Parameters:

cvFolds - Description of Parameter

cvTimes - Description of Parameter

QualityMeasureLCV

public QualityMeasureLCV(DatasetInt dataset,
                         int cvFolds,
                         int cvTimes)

Create quality measure for given a dataset and a number of cross-validation folds and a number of cross-validation repetitions.

Parameters:

dataset - Description of Parameter

cvFolds - Description of Parameter

cvTimes - Description of Parameter

Method Detail

setDataset

public void setDataset(DatasetInt dataset)

Description copied from class: QualityMeasure

Sets dataset used for grading Bayesian networks.

Overrides:

setDataset in class QualityMeasure

Parameters:

dataset - The new Dataset value

getName

public java.lang.String getName()

Gets the Name attribute of the QualityMeasureLCV object

Specified by:

getName in class QualityMeasure

Returns:

The Name value

getCVFolds

public int getCVFolds()

Gets the number of cross-validation folds.

Returns:

The CVFolds value

getCVTimes

public int getCVTimes()

Gets the number of times the cross validation is repeated (averaged).

Returns:

The CVTimes value

evaluate

public final double evaluate(BayesianNetworks.BayesNet net)
                      throws java.lang.Exception

Description of the Method

Specified by:

evaluate in class QualityMeasure

Parameters:

net - Description of Parameter

Returns:

Description of the Returned Value

Throws:

java.lang.Exception - Description of Exception