org.biojavax.ga.functions
Class OrderCrossover

java.lang.Object
  org.biojava.utils.AbstractChangeable
      org.biojavax.ga.functions.AbstractCrossOverFunction
          org.biojavax.ga.functions.OrderCrossover

All Implemented Interfaces:

Changeable, CrossOverFunction

public class OrderCrossover
extends AbstractCrossOverFunction

This does a 2-point-crossover on two chromosomes keeping the Symbols in each chromosome constant. The method is commonly named OX - operator

Author:

Susanne Merz

Nested Class Summary

Nested classes/interfaces inherited from interface org.biojavax.ga.functions.CrossOverFunction

CrossOverFunction.NoCross

Field Summary

Fields inherited from interface org.biojavax.ga.functions.CrossOverFunction

CROSS_PROB, DEFAULT_CROSS_PROB, DEFAULT_MAX_CROSS, MAX_CROSSES, NO_CROSS

Constructor Summary

OrderCrossover()
Sets the maximal number of crossover points to two and the crossover probability to 0.5 and initializes this object.

Method Summary

GACrossResult

performCrossOver(SymbolList chromA, SymbolList chromB) Performs a cross between the pair of chromosomes

Methods inherited from class org.biojavax.ga.functions.AbstractCrossOverFunction

getCrossOverProbs, getMaxCrossOvers, setCrossOverProbs, setMaxCrossOvers

Methods inherited from class org.biojava.utils.AbstractChangeable

addChangeListener, addChangeListener, generateChangeSupport, getChangeSupport, hasListeners, hasListeners, isUnchanging, removeChangeListener, removeChangeListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.biojava.utils.Changeable

addChangeListener, addChangeListener, isUnchanging, removeChangeListener, removeChangeListener

Constructor Detail

OrderCrossover

public OrderCrossover()

Sets the maximal number of crossover points to two and the crossover probability to 0.5 and initializes this object.

Method Detail

performCrossOver

public GACrossResult performCrossOver(SymbolList chromA,
                                      SymbolList chromB)
                               throws ChangeVetoException

Description copied from interface: CrossOverFunction

Performs a cross between the pair of chromosomes

Parameters:

chromA - The first chromosome in the cross

chromB - The second chromosome in the cross

Returns:

A GACross that holds the results of the cross

Throws:

ChangeVetoException - if the chromosomes are unmodifiable