de.jstacs.classifiers.performanceMeasures
Class PRCurve
java.lang.Object
de.jstacs.parameters.ParameterSet
de.jstacs.classifiers.performanceMeasures.AbstractPerformanceMeasure
de.jstacs.classifiers.performanceMeasures.TwoClassAbstractPerformanceMeasure
de.jstacs.classifiers.performanceMeasures.PRCurve
- All Implemented Interfaces:
- GalaxyConvertible, Storable, Cloneable
- Direct Known Subclasses:
- AucPR
public class PRCurve
- extends TwoClassAbstractPerformanceMeasure
This class implements the precision-recall curve and its area under the curve.
The precision-recall curve is the plot of precision (also called positive predictive value,
)
against recall (also called sensitivity,
) for all possible classification thresholds.
If you are only interested in the area under this curve, you can use AucPR
instead.
- Author:
- Jan Grau, Jens Keilwagen
Method Summary |
ResultSet |
compute(double[] sortedScoresClass0,
double[] sortedScoresClass1)
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.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 |
NAME
public static final String NAME
- The name of the performance measure return by
getName()
- See Also:
- Constant Field Values
PRCurve
public PRCurve()
- Constructs a new instance of the performance measure
PRCurve
.
PRCurve
public PRCurve(StringBuffer xml)
throws NonParsableException
- The standard constructor for the interface
Storable
.
Constructs a PRCurve
out of an XML representation.
- Parameters:
xml
- the XML representation as StringBuffer
- Throws:
NonParsableException
- if the PRCurve
could not be reconstructed out of
the StringBuffer
xml
getName
public String getName()
- Description copied from class:
AbstractPerformanceMeasure
- The method returns the name of the performance measure.
- Specified by:
getName
in class AbstractPerformanceMeasure
- Returns:
- the name of the performance measure
compute
public ResultSet compute(double[] sortedScoresClass0,
double[] sortedScoresClass1)
- Description copied from class:
AbstractPerformanceMeasure
- 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 class AbstractPerformanceMeasure
- Parameters:
sortedScoresClass0
- the sorted score ratios of class 0sortedScoresClass1
- the sorted score ratios of class 1
- Returns:
- a result set containing the results of the performance measure
- See Also:
Arrays.sort(double[])