Package elki.evaluation.scores

Class AveragePrecisionEvaluation

java.lang.Object

elki.evaluation.scores.AveragePrecisionEvaluation

All Implemented Interfaces:

ScoreEvaluation

public class AveragePrecisionEvaluation
extends java.lang.Object
implements ScoreEvaluation

Evaluate using average precision.

Since:

0.7.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	AveragePrecisionEvaluation.Par	Parameterization class.

Nested classes/interfaces inherited from interface elki.evaluation.scores.ScoreEvaluation

ScoreEvaluation.Adapter

Field Summary

Fields

Modifier and Type	Field	Description
static AveragePrecisionEvaluation	STATIC	Static instance

Constructor Summary

Constructors

Constructor	Description
AveragePrecisionEvaluation()

Method Summary

Modifier and Type	Method	Description
double	evaluate(ScoreEvaluation.Adapter adapter)	Evaluate a given predicate and iterator.
double	expected(int pos, int all)	Expected score for a random result.

Methods inherited from class java.lang.Object

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

Methods inherited from interface elki.evaluation.scores.ScoreEvaluation

evaluate

Field Detail

STATIC

public static final AveragePrecisionEvaluation STATIC

Static instance

Constructor Detail

AveragePrecisionEvaluation

public AveragePrecisionEvaluation()

Method Detail

evaluate

public double evaluate(ScoreEvaluation.Adapter adapter)

Description copied from interface: ScoreEvaluation

Evaluate a given predicate and iterator.

Specified by:

evaluate in interface ScoreEvaluation

Parameters:

adapter - Input data adapter

Returns:

Score

expected

public double expected(int pos,
                       int all)

Description copied from interface: ScoreEvaluation

Expected score for a random result.

Specified by:

expected in interface ScoreEvaluation

Parameters:

pos - Number of positive elements

all - Total number of elements

Returns:

Expected score