NAME

    Algorithm::Evolutionary::Individual::Vector - Array as an individual for evolutionary computation


SYNOPSIS

    use Algorithm::Evolutionary::Individual::Vector;
    my $indi = new Algorithm::Evolutionary::Individual::Vector 10 ; # Build random vector individual with length 10
                                   # Each element in the range 0 .. 1
    my $indi2 = new Algorithm::Evolutionary::Individual::Vector 20, -5, 5; #Same, with range between -5 and 5
    #Creating a vector step by step. In Perl, there's always more than one way of doing it
    my $indi3 = new Algorithm::Evolutionary::Individual::Vector;
    $indi3->set( {length => 20,
                  rangestart => -5,
                  rangeend => 5 } );   #Sets values, but does not build the array

    $indi3->randomize(); #Creates an array using above parameters
    print $indi3->Atom( 7 );       #Returns the value of the 7th character
    $indi3->Atom( 3 ) = '2.35';       #Sets the value
    $indi3->addAtom( 7.5 ); #Adds a new component to the array at the end
    my $indi4 = Algorithm::Evolutionary::Individual::Vector->fromString( '3.5,4.5, 0.1, 3.2');
       #Parses the comma-separated elements of the string and creates a Algorithm::Evolutionary::Individual::Vector from them
    my $indi5 = $indi4->clone(); #Creates a copy of the individual
    my @array = qw( 3.5 4.8 3.3 4.2 0.23); #Tie a vector individual
    tie my @vector, 'Algorithm::Evolutionary::Individual::Vector', @array;
    print tied( @vector )->asXML();
    print $indi3->asString(); #Prints the individual
    print $indi3->asXML() #Prints it as XML. See L<XML> for more info on this


Base Class

Algorithm::Evolutionary::Individual::Base


DESCRIPTION

Array individual for a EA. Generally used for floating-point arrays. It can be also TIEd so that it can be handled as a normal array.


METHODS

new

Creates a new random array individual, with fixed initial length, and uniform distribution of values within a range

set

Sets values of an individual; takes a hash as input

randomize

Assigns random values to the elements

Atom

Gets or sets the value of an atom

addAtom

Adds an atom at the end

length

Returns the number of atoms in the individual

fromString

Similar to a copy ctor; creates a vector individual from a string composed of stuff separated by a separator

clone

Similar to a copy ctor: creates a new individual from another one

asString

Prints it

asXML

Prints it as XML. See the Algorithm::Evolutionary::XML OPEAL manual for details.

Chrom

Sets or gets the array that holds the chromosome. Not very nice, and I would never ever do this in C++


Copyright


  This file is released under the GPL. See the LICENSE file included in this distribution,
  or go to http://www.fsf.org/licenses/gpl.txt
  CVS Info: $Date: 2002/07/23 11:47:57 $ 
  $Header: /cvsroot/opeal/opeal/Algorithm/Evolutionary/Individual/Vector.pm,v 1.7 2002/07/23 11:47:57 jmerelo Exp $ 
  $Author: jmerelo $ 
  $Revision: 1.7 $
  $Name $