de.unihalle.informatik.MiToBo.segmentation.evaluation

Class CalcQualityMeasures

java.lang.Object

de.unihalle.informatik.MiToBo.segmentation.evaluation.CalcQualityMeasures

public class CalcQualityMeasures
extends Object

Helper class for calculating precision and recall values.

Author:

moeller

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	CalcQualityMeasures.PrecisionCalc Internal operator for precision calculation.
private static class	CalcQualityMeasures.RecallCalc Internal operator for recall calculation.

Constructor Summary

Constructors

Constructor and Description
CalcQualityMeasures()

Method Summary

Modifier and Type	Method and Description
static double	calcPrecision(int tp, int fp) Calculates the precision from given true and false positives.
static double	calcRecall(int tp, int fn) Calculates the recall value from given true positives and false negatives.

Methods inherited from class java.lang.Object

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

Constructor Detail

CalcQualityMeasures

public CalcQualityMeasures()

Method Detail

calcRecall

public static double calcRecall(int tp,
                                int fn)
                         throws de.unihalle.informatik.Alida.exceptions.ALDOperatorException,
                                de.unihalle.informatik.Alida.exceptions.ALDProcessingDAGException

Calculates the recall value from given true positives and false negatives.

Formular:

Parameters:

tp - True positive count.

fn - False negative count.

Returns:

Calculated recall value.

Throws:

de.unihalle.informatik.Alida.exceptions.ALDOperatorException - Thrown in case of failure.

de.unihalle.informatik.Alida.exceptions.ALDProcessingDAGException - Thrown in case of failure.

LaTeX:

\begin{equation} recall = \frac{TP}{TP + FN} \end{equation}

calcPrecision

public static double calcPrecision(int tp,
                                   int fp)
                            throws de.unihalle.informatik.Alida.exceptions.ALDOperatorException,
                                   de.unihalle.informatik.Alida.exceptions.ALDProcessingDAGException

Calculates the precision from given true and false positives.

Formular:

Parameters:

tp - True positive count.

fp - False positive count.

Returns:

Calculated precision.

Throws:

de.unihalle.informatik.Alida.exceptions.ALDOperatorException - Thrown in case of failure.

de.unihalle.informatik.Alida.exceptions.ALDProcessingDAGException - Thrown in case of failure.

LaTeX:

\begin{equation} recall = \frac{TP}{TP + FP} \end{equation}