edu.udo.cs.yale.operator.learner.meta
Class AdaBoostPerformanceMeasures

java.lang.Object
  edu.udo.cs.yale.operator.learner.meta.WeightedPerformanceMeasures
      edu.udo.cs.yale.operator.learner.meta.AdaBoostPerformanceMeasures

public class AdaBoostPerformanceMeasures
extends WeightedPerformanceMeasures

Helper class for the internal AdaBoost implementation.

Version:

$Id: AdaBoostPerformanceMeasures.java,v 1.3 2006/04/14 15:04:22 ingomierswa Exp $

Author:

Martin Scholz

Field Summary

private double

errorRate

Fields inherited from class edu.udo.cs.yale.operator.learner.meta.WeightedPerformanceMeasures

RULE_DOES_NOT_APPLY

Constructor Summary

AdaBoostPerformanceMeasures(ExampleSet exampleSet)

Method Summary

double	getErrorRate()
double	reweightExamples(ExampleSet exampleSet) This method reweights the example set with respect to the performance measures.

Methods inherited from class edu.udo.cs.yale.operator.learner.meta.WeightedPerformanceMeasures

createLiftRatioMatrix, getContingencyMatrix, getCoveredExamplesNumForPred, getLabelPriors, getLift, getNumberOfLabels, getNumberOfNonEmptyClasses, getNumberOfPredictions, getPnRatios, getProbability, getProbabilityLabel, getProbabilityPrediction, reweightExamples

Methods inherited from class java.lang.Object

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

Field Detail

errorRate

private final double errorRate

Constructor Detail

AdaBoostPerformanceMeasures

public AdaBoostPerformanceMeasures(ExampleSet exampleSet)
                            throws OperatorException

Parameters:

exampleSet -

Throws:

OperatorException

Method Detail

getErrorRate

public double getErrorRate()

Returns:

the error rate computed by the constructor

reweightExamples

public double reweightExamples(ExampleSet exampleSet)
                        throws OperatorException

This method reweights the example set with respect to the performance measures. Please note that the weights will not be reset at any time, because they continuously change from one iteration to the next.

Parameters:

exampleSet - ExampleSet to be reweighted

Returns:

the total weight after reweighting.

Throws:

OperatorException