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

All Methods Instance Methods Concrete Methods
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 Detail
  - CrowdingArchive
```
@Inject
public CrowdingArchive(int capacity)
```
    Constructs a CrowdingArchive.
    
    Parameters:
    
    capacity - capacity of this archive (using namespace BoundedArchive)
- Method Detail
  - 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