net.openai.ai.ga.selection.common
Class SelectIntersection

java.lang.Object
  |
  +--net.openai.ai.ga.selection.common.SelectIntersection

All Implemented Interfaces:

SelectionAlgorithm

public class SelectIntersection

extends java.lang.Object

implements SelectionAlgorithm

SelectIntersection is a SelectionAlgorithm that will return the intersection of the results of two specified SelectionAlgorithms.

Since:

JDK1.3

Version:

%I%, %G%

Author:

Jared Grubb

Constructor Summary

SelectIntersection(SelectionAlgorithm first, SelectionAlgorithm second)
Creates a new SelectIntersection object for taking the intersection of the Populations returned by the two passed SelectionAlgorithms.

Method Summary

Population

selectFromPopulation(Population pop) Returns a Population that represents the intersection (disjunction) of the two SelectionAlgorithms specified in the constructor.

Methods inherited from class java.lang.Object

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

Constructor Detail

SelectIntersection

public SelectIntersection(SelectionAlgorithm first,
                          SelectionAlgorithm second)

Creates a new SelectIntersection object for taking the intersection of the Populations returned by the two passed SelectionAlgorithms.

Parameters:

first - the first SelectionAlgorithm

second - the second SelectionAlgorithm

Method Detail

selectFromPopulation

public Population selectFromPopulation(Population pop)

Returns a Population that represents the intersection (disjunction) of the two SelectionAlgorithms specified in the constructor. The return is the result of the first selection algorithm with all but the results of the second removed from it via Population.removeAllCellsBut() method. If the first selection algorithm returns a null then a NullPointerException will be thrown. If the second one returns a null, the the results of the first will be returned unchanged.

Specified by:

selectFromPopulation in interface SelectionAlgorithm

Parameters:

pop - the Population to choose from

Returns:

the intersection Population of the two selection algorithms