org.jgap.gp.impl

Class BranchTypingCross

java.lang.Object

org.jgap.gp.CrossMethod

org.jgap.gp.impl.BranchTypingCross

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Comparable

public class BranchTypingCross
extends CrossMethod
implements java.io.Serializable, java.lang.Comparable, java.lang.Cloneable

Crossing over for GP ProgramChromosomes.

Since:

3.0

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
BranchTypingCross(GPConfiguration a_config) Standard constructor.
BranchTypingCross(GPConfiguration a_config, boolean a_simpleChromosomeSelection)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
int	compareTo(java.lang.Object a_other) The compareTo-method.
boolean	equals(java.lang.Object a_other) The equals-method.
IGPProgram[]	operate(IGPProgram a_i1, IGPProgram a_i2) Crosses two individuals.

Methods inherited from class org.jgap.gp.CrossMethod

getConfiguration

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BranchTypingCross

public BranchTypingCross(GPConfiguration a_config)

Standard constructor.

Parameters:

a_config - the configuration to use

BranchTypingCross

public BranchTypingCross(GPConfiguration a_config,
                         boolean a_simpleChromosomeSelection)

Parameters:

a_config - the configuration to use

a_simpleChromosomeSelection - true: plainly select chromosomes, false: select chromosomes proportionally to their size (=number of nodes within a chromosome)

Since:

3.4

Method Detail

operate

public IGPProgram[] operate(IGPProgram a_i1,
                            IGPProgram a_i2)

Crosses two individuals. A random chromosome is chosen for crossing based on the proportion of nodes in each chromosome in the first individual.

Specified by:

operate in class CrossMethod

Parameters:

a_i1 - the first individual to cross

a_i2 - the second individual to cross

Returns:

an array of the two resulting individuals

Since:

3.0

compareTo

public int compareTo(java.lang.Object a_other)

The compareTo-method.

Specified by:

compareTo in interface java.lang.Comparable

Parameters:

a_other - the other object to compare

Returns:

0 or 1 in this case, as BranchTypingCross objects keep no state

Since:

3.0

equals

public boolean equals(java.lang.Object a_other)

The equals-method.

Overrides:

equals in class java.lang.Object

Parameters:

a_other - the other object to compare

Returns:

always true for non-null BranchTypingCross objects because they keep no state

Since:

3.0

clone

public java.lang.Object clone()

Overrides:

clone in class java.lang.Object

Returns:

deep clone of this instance

Since:

3.2