org.evosuite.ga.operators.selection

Class FitnessProportionateSelection<T extends Chromosome>

java.lang.Object

org.evosuite.ga.operators.selection.SelectionFunction<T>

org.evosuite.ga.operators.selection.FitnessProportionateSelection<T>

All Implemented Interfaces:

Serializable

public class FitnessProportionateSelection<T extends Chromosome>
extends SelectionFunction<T>

Roulette wheel selection

Author:

Gordon Fraser

See Also:

Serialized Form

Field Summary

Fields inherited from class org.evosuite.ga.operators.selection.SelectionFunction

logger, maximize

Constructor Summary

Constructors

Constructor and Description
FitnessProportionateSelection()

Method Summary

Modifier and Type	Method and Description
int	getIndex(List<T> population) Return index of next offspring
List<T>	select(List<T> population, int number) Return n parents

Methods inherited from class org.evosuite.ga.operators.selection.SelectionFunction

isMaximize, select, setMaximize

Methods inherited from class java.lang.Object

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

Constructor Detail

FitnessProportionateSelection

public FitnessProportionateSelection()

Method Detail

getIndex

public int getIndex(List<T> population)

Return index of next offspring

Specified by:

getIndex in class SelectionFunction<T extends Chromosome>

Parameters:

population - a List object.

Returns:

a int.

select

public List<T> select(List<T> population,
                      int number)

Return n parents Return n parents

Overrides:

select in class SelectionFunction<T extends Chromosome>

Parameters:

population - a List object.

number - n

Returns:

a List object.