org.moeaframework.core.indicator
Class Contribution

java.lang.Object
  org.moeaframework.core.indicator.Contribution

All Implemented Interfaces:

Indicator

public class Contribution
extends Object
implements Indicator

Measures the contribution of the approximation set to the reference set.

Constructor Summary

Contribution(NondominatedPopulation referenceSet)
Constructs the contribution indicator using the specified reference set.

Contribution(NondominatedPopulation referenceSet, double epsilon)
Constructs the contribution indicator using the specified reference set and ε value.

Contribution(NondominatedPopulation referenceSet, double[] epsilon)
Constructs the contribution indicator using the specified reference set and ε values.

Contribution(NondominatedPopulation referenceSet, EpsilonBoxDominanceComparator comparator)
Constructs the contribution indicator using the specified reference set and ε-box dominance comparator.

Method Summary

double

evaluate(NondominatedPopulation approximationSet) Returns the value of this unary quality indicator given the specified non-dominated population.

Methods inherited from class java.lang.Object

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

Constructor Detail

Contribution

public Contribution(NondominatedPopulation referenceSet)

Constructs the contribution indicator using the specified reference set. Exact matching is used.

Parameters:

referenceSet - the reference set

Throws:

IllegalArgumentException - if the reference set is empty

Contribution

public Contribution(NondominatedPopulation referenceSet,
                    double epsilon)

Constructs the contribution indicator using the specified reference set and ε value. Solutions residing in the same ε-box are considered to be equivalent.

Parameters:

referenceSet - the reference set

epsilon - the ε value

Throws:

IllegalArgumentException - if the reference set is empty

Contribution

public Contribution(NondominatedPopulation referenceSet,
                    double[] epsilon)

Constructs the contribution indicator using the specified reference set and ε values. Solutions residing in the same ε-box are considered to be equivalent.

Parameters:

referenceSet - the reference set

epsilon - the ε values

Throws:

IllegalArgumentException - if the reference set is empty

Contribution

public Contribution(NondominatedPopulation referenceSet,
                    EpsilonBoxDominanceComparator comparator)

Constructs the contribution indicator using the specified reference set and ε-box dominance comparator. Solutions residing in the same ε-box are considered to be equivalent.If the comparator is null, exact matching is used.

Parameters:

referenceSet - the reference set

comparator - the ε-box dominance comparator used to determine if solutions in the reference set are covered by solutions in the approximation set; or null if exact matching is used

Throws:

IllegalArgumentException - if the reference set is empty

Method Detail

evaluate

public double evaluate(NondominatedPopulation approximationSet)

Description copied from interface: Indicator

Returns the value of this unary quality indicator given the specified non-dominated population.

Specified by:

evaluate in interface Indicator

Parameters:

approximationSet - the non-dominated population to be evaluated

Returns:

the value of this quality indicator given the specified non-dominated population