de.jstacs.classifiers.performanceMeasures
Class AucPR

java.lang.Object
  de.jstacs.parameters.ParameterSet
      de.jstacs.classifiers.performanceMeasures.AbstractPerformanceMeasure
          de.jstacs.classifiers.performanceMeasures.AbstractTwoClassPerformanceMeasure
              de.jstacs.classifiers.performanceMeasures.PRCurve
                  de.jstacs.classifiers.performanceMeasures.AucPR

All Implemented Interfaces:

NumericalPerformanceMeasure, PerformanceMeasure, GalaxyConvertible, Storable, Cloneable

public class AucPR
extends PRCurve
implements NumericalPerformanceMeasure

This class implements the area under curve of the precision-recall curve.

Author:

Jan Grau, Jens Keilwagen

See Also:

PRCurve

Nested Class Summary

Nested classes/interfaces inherited from class de.jstacs.parameters.ParameterSet

ParameterSet.ParameterList

Field Summary

Fields inherited from class de.jstacs.classifiers.performanceMeasures.PRCurve

minStepSize, NAME

Fields inherited from class de.jstacs.parameters.ParameterSet

errorMessage, parameters, parent

Constructor Summary

AucPR()
Constructs a new instance of the performance measure AucPR.

AucPR(StringBuffer xml)
The standard constructor for the interface Storable.

Method Summary

NumericalResultSet	compute(double[][][] classSpecificScores) This method allows to compute the performance measure of given class specific scores.
NumericalResultSet	compute(double[][][] classSpecificScores, double[][] weights) This method allows to compute the performance measure of given class specific scores.
NumericalResultSet	compute(double[] sortedScoresClass0, double[] sortedScoresClass1) This method allows to compute the performance measure of given sorted score ratios.
NumericalResultSet	compute(double[] sortedScoresClass0, double[] weightsClass0, double[] sortedScoresClass1, double[] weightsClass1) This method allows to compute the performance measure of given sorted score ratios.
String	getName() The method returns the name of the performance measure.

Methods inherited from class de.jstacs.classifiers.performanceMeasures.AbstractTwoClassPerformanceMeasure

getAllowedNumberOfClasses

Methods inherited from class de.jstacs.classifiers.performanceMeasures.AbstractPerformanceMeasure

findSplitIndex, findThreshold, getCollectionOfAllMeasures, getWeight, simpleWeights

Methods inherited from class de.jstacs.parameters.ParameterSet

clone, fromGalaxy, fromXML, getAllParameterNames, getComment, getComment, getErrorMessage, getIndex, getName, getName, getNumberOfParameters, getParameterAt, getParameterForName, getParent, hasDefaultOrIsSet, initParameterList, initParameterList, isAtomic, isComparable, parametersLoaded, reset, setParent, toGalaxy, toXML

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.jstacs.classifiers.performanceMeasures.PerformanceMeasure

getAllowedNumberOfClasses

Constructor Detail

AucPR

public AucPR()

Constructs a new instance of the performance measure AucPR.

AucPR

public AucPR(StringBuffer xml)
      throws NonParsableException

The standard constructor for the interface Storable. Constructs a AucPR out of an XML representation.

Parameters:

xml - the XML representation as StringBuffer

Throws:

NonParsableException - if the AucPR could not be reconstructed out of the StringBuffer xml

Method Detail

compute

public NumericalResultSet compute(double[] sortedScoresClass0,
                                  double[] sortedScoresClass1)

Description copied from interface: PerformanceMeasure

This method allows to compute the performance measure of given sorted score ratios. This method can only be used for binary classifiers.

Specified by:

compute in interface NumericalPerformanceMeasure

Specified by:

compute in interface PerformanceMeasure

Overrides:

compute in class AbstractPerformanceMeasure

Parameters:

sortedScoresClass0 - the sorted score ratios of class 0

sortedScoresClass1 - the sorted score ratios of class 1

Returns:

a result set containing the results of the performance measure

See Also:

PerformanceMeasure.compute(double[], double[], double[], double[])

compute

public NumericalResultSet compute(double[][][] classSpecificScores)

Description copied from interface: PerformanceMeasure

This method allows to compute the performance measure of given class specific scores.

Specified by:

compute in interface NumericalPerformanceMeasure

Specified by:

compute in interface PerformanceMeasure

Overrides:

compute in class AbstractPerformanceMeasure

Parameters:

classSpecificScores - the scores; first dimension = data sets, second dimension = sequences of the data set, third dimension classes of the classifier

Returns:

a result set containing the results of the performance measure

See Also:

PerformanceMeasure.compute(double[][][], double[][])

compute

public NumericalResultSet compute(double[] sortedScoresClass0,
                                  double[] weightsClass0,
                                  double[] sortedScoresClass1,
                                  double[] weightsClass1)

Description copied from interface: PerformanceMeasure

This method allows to compute the performance measure of given sorted score ratios. This method can only be used for binary classifiers.

Specified by:

compute in interface NumericalPerformanceMeasure

Specified by:

compute in interface PerformanceMeasure

Overrides:

compute in class PRCurve

Parameters:

sortedScoresClass0 - the sorted score ratios of class 0

weightsClass0 - the weights of the sequences of class 0 sorted along with the scores sortedScoresClass0

sortedScoresClass1 - the sorted score ratios of class 1

weightsClass1 - the weights of the sequences of class 1 sorted along with the scores sortedScoresClass1

Returns:

a result set containing the results of the performance measure

See Also:

de.jstacs.utils.ToolBox#sortAlongWith(double[], double[]...)

compute

public NumericalResultSet compute(double[][][] classSpecificScores,
                                  double[][] weights)

Description copied from interface: PerformanceMeasure

This method allows to compute the performance measure of given class specific scores.

Specified by:

compute in interface NumericalPerformanceMeasure

Specified by:

compute in interface PerformanceMeasure

Overrides:

compute in class AbstractTwoClassPerformanceMeasure

Parameters:

classSpecificScores - the scores; first dimension = data sets, second dimension = sequences of the data set, third dimension classes of the classifier

weights - the weights for all sequence in all data sets

Returns:

a result set containing the results of the performance measure

getName

public String getName()

Description copied from interface: PerformanceMeasure

The method returns the name of the performance measure.

Specified by:

getName in interface PerformanceMeasure

Overrides:

getName in class PRCurve

Returns:

the name of the performance measure