smile.gap

Enum Crossover

java.lang.Object

java.lang.Enum<Crossover>

smile.gap.Crossover

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<Crossover>

public enum Crossover
extends java.lang.Enum<Crossover>

The types of crossover operation.

Enum Constant Summary

Enum Constants

Enum Constant and Description
SINGLE_POINT Single point crossover - one crossover point is selected, binary string from beginning of chromosome to the crossover point is copied from one parent, the rest is copied from the second parent.
TWO_POINT Two point crossover - two crossover point are selected, binary string from beginning of chromosome to the first crossover point is copied from one parent, the part from the first to the second crossover point is copied from the second parent and the rest is copied from the first parent.
UNIFORM Uniform crossover - bits are randomly copied from the first or from the second parent.

Method Summary

Modifier and Type	Method and Description
abstract BitString[]	apply(BitString father, BitString mother) Returns a pair of offsprings by crossovering parent chromosomes.
static Crossover	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static Crossover[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

SINGLE_POINT

public static final Crossover SINGLE_POINT

Single point crossover - one crossover point is selected, binary string from beginning of chromosome to the crossover point is copied from one parent, the rest is copied from the second parent.

TWO_POINT

public static final Crossover TWO_POINT

Two point crossover - two crossover point are selected, binary string from beginning of chromosome to the first crossover point is copied from one parent, the part from the first to the second crossover point is copied from the second parent and the rest is copied from the first parent.

UNIFORM

public static final Crossover UNIFORM

Uniform crossover - bits are randomly copied from the first or from the second parent.

Method Detail

values

public static Crossover[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Crossover c : Crossover.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Crossover valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null

apply

public abstract BitString[] apply(BitString father,
                                  BitString mother)

Returns a pair of offsprings by crossovering parent chromosomes.