CrowdingArchive

java.lang.Object

org.opt4j.core.IndividualSet

org.opt4j.core.optimizer.Archive

org.opt4j.common.archive.AbstractArchive

org.opt4j.common.archive.BoundedArchive

org.opt4j.common.archive.CrowdingArchive

All Implemented Interfaces:: Iterable<Individual>, Collection<Individual>, Set<Individual>

Direct Known Subclasses:: DefaultArchive

public class CrowdingArchive extends BoundedArchive

The CrowdingArchive is based on the Crowding distance of the Nsga2.

See Also:

Crowding

Field Summary

Fields inherited from class org.opt4j.common.archive.BoundedArchive
capacity

Fields inherited from class org.opt4j.core.IndividualSet
individuals, listeners
Constructor Summary

Constructors

Constructor

Description

CrowdingArchive(int capacity)

Constructs a CrowdingArchive.
Method Summary

Modifier and Type

Method

Description

protected boolean

updateWithNondominated(Collection<Individual> candidates)

Adds new candidates which are already checked to be not Pareto-dominated by any other individual in this Archive.

Methods inherited from class org.opt4j.common.archive.BoundedArchive
addCheckedIndividual, addCheckedIndividuals, getCapacity, setCapacity

Methods inherited from class org.opt4j.common.archive.AbstractArchive
update

Methods inherited from class org.opt4j.core.optimizer.Archive
add, addAll, addAll, update

Methods inherited from class org.opt4j.core.IndividualSet
addListener, clear, contains, containsAll, isEmpty, iterator, remove, removeAll, removeListener, retainAll, size, toArray, toArray

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Collection
parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable
forEach

Methods inherited from interface java.util.Set
equals, hashCode, spliterator

Constructor Details
- CrowdingArchive
  
  @Inject public CrowdingArchive(int capacity)
  
  Constructs a CrowdingArchive.
  
  Parameters:
  
  capacity - capacity of this archive (using namespace BoundedArchive)
Method Details
- updateWithNondominated
  
  protected boolean updateWithNondominated(Collection<Individual> candidates)
  
  Description copied from class: AbstractArchive
  
  Adds new candidates which are already checked to be not Pareto-dominated by any other individual in this Archive. All Individuals in the Archive which were dominated by the candidates have already been removed.
  
  Specified by:
  
  updateWithNondominated in class AbstractArchive
  
  Parameters:
  
  candidates - the non-dominated individuals which can be added
  
  Returns:
  
  true if one or more candidates are added to the archive