Package org.moeaframework.core.indicator

Class NormalizedIndicator

java.lang.Object

org.moeaframework.core.indicator.NormalizedIndicator

All Implemented Interfaces:

Indicator

Direct Known Subclasses:

AdditiveEpsilonIndicator, GenerationalDistance, GenerationalDistancePlus, InvertedGenerationalDistance, InvertedGenerationalDistancePlus, MaximumParetoFrontError, NativeHypervolume, PISAHypervolume, RIndicator, WFGNormalizedHypervolume

public abstract class NormalizedIndicator
extends Object
implements Indicator

Abstract class for indicators that require normalized approximation and reference sets.

Field Summary

Fields

Modifier and Type	Field	Description
protected final Problem	problem	The problem.

Constructor Summary

Constructors

Constructor	Description
NormalizedIndicator(Problem problem, NondominatedPopulation referenceSet)	Constructs a normalized indicator for the specified problem and corresponding reference set.
NormalizedIndicator(Problem problem, NondominatedPopulation referenceSet, Normalizer normalizer)	Constructs a normalized indicator for the specified problem, reference set, and normalizer.

Method Summary

Modifier and Type	Method	Description
protected NondominatedPopulation	getNormalizedReferenceSet()	Returns the normalized reference set.
protected NondominatedPopulation	normalize(NondominatedPopulation approximationSet)	Normalizes the specified approximation set.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.moeaframework.core.Indicator

evaluate

Field Details

problem

protected final Problem problem

The problem.

Constructor Details

NormalizedIndicator

public NormalizedIndicator(Problem problem,
 NondominatedPopulation referenceSet)

Constructs a normalized indicator for the specified problem and corresponding reference set. See DefaultNormalizer for details on how normalization can be customized.

Parameters:

problem - the problem

referenceSet - the reference set for the problem

Throws:

IllegalArgumentException - if the reference set contains fewer than two solutions

NormalizedIndicator

public NormalizedIndicator(Problem problem,
 NondominatedPopulation referenceSet,
 Normalizer normalizer)

Constructs a normalized indicator for the specified problem, reference set, and normalizer.

Parameters:

problem - the problem

referenceSet - the reference set for the problem

normalizer - a user-provided normalizer, or null to use the default

Method Details

normalize

protected NondominatedPopulation normalize(NondominatedPopulation approximationSet)

Normalizes the specified approximation set.

Parameters:

approximationSet - the approximation set to be normalized

Returns:

a new population representing the normalized approximation set

getNormalizedReferenceSet

protected NondominatedPopulation getNormalizedReferenceSet()

Returns the normalized reference set.

Returns:

the normalized reference set