J. J. Merelo-Guervós > POE-Component-Algorithm-Evolutionary > POE::Component::Algorithm::Evolutionary::Island::POEtic

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POE-Component-Algorithm-Evolutionary-0.2.1.tar.gz

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Module Version: 1.002   Source  

NAME ^

POE::Component::Algorithm::Evolutionary::Island::POEtic - Island that uses POE mechanisms for interchanging information, and act only as POE sessions

SYNOPSIS ^

  use POE::Component::Algorithm::Evolutionary::Island::POEtic;

  use Algorithm::Evolutionary qw( Individual::BitString Op::Creator 
                                  Op::CanonicalGA Op::Bitflip 
                                  Op::Crossover Op::GenerationalTerm
                                  Fitness::Royal_Road);

  my $bits = shift || 64;
  my $block_size = shift || 4;
  my $pop_size = shift || 256; #Population size
  my $numGens = shift || 200; #Max number of generations
  my $selection_rate = shift || 0.2;

  #Initial population
  my $creator = new Algorithm::Evolutionary::Op::Creator( $pop_size, 'BitString', { length => $bits });

  # Variation operators
  my $m = Algorithm::Evolutionary::Op::Bitflip->new( 1 );
  my $c = Algorithm::Evolutionary::Op::Crossover->new(2, 4);

  # Fitness function: create it and evaluate
  my $rr = new  Algorithm::Evolutionary::Fitness::Royal_Road( $block_size );

  my $generation = Algorithm::Evolutionary::Op::CanonicalGA->new( $rr , $selection_rate , [$m, $c] ) ;
  my $gterm = new Algorithm::Evolutionary::Op::GenerationalTerm 10;

  my @nodes = qw( node_1 node_2 );
  my %sessions;
  for my $n ( @nodes ){
    my @nodes_here = grep( $_ ne $n, @nodes );
    $sessions{$n} = POE::Component::Algorithm::Evolutionary::Island::POEtic->new( Fitness => $rr,
                                                                                Creator => $creator,
                                                                                Single_Step => $generation,
                                                                                Terminator => $gterm,
                                                                                Alias => $n,
                                                                                Peers => \@nodes_here );
  }

  $poe_kernel->run();

DESCRIPTION ^

Using post, this type of island moves individuals from one island to another

INTERFACE ^

new

POE::Component::Algorithm::Evolutionary::Island::POEtic->new( Fitness => $rr, Creator => $creator, Single_Step => $generation, Terminator => $gterm, Alias => 'this_peer', Peers => \@peers);

Basically like PoCoAE, but with peers

after_step

Not to be called from outside, is the one that does the actual interchange between islands.

CONFIGURATION AND ENVIRONMENT ^

POE::Component::Algorithm::Evolutionary requires no configuration files or environment variables.

DEPENDENCIES ^

Main dependence is Algorithm::Evolutionary; however, it's not included by default, since you must pick and choose the modules you are going to actually use.

INCOMPATIBILITIES ^

None reported.

BUGS AND LIMITATIONS ^

No bugs have been reported.

Please report any bugs or feature requests to bug-poe-component-algorithm-evolutionary@rt.cpan.org, or through the web interface at http://rt.cpan.org.

AUTHOR ^

JJ Merelo <jj@merelo.net>

Boilerplate taken from article in perl.com

LICENCE AND COPYRIGHT ^

Copyright (c) 2009, JJ Merelo <jj@merelo.net>. All rights reserved.

This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.

  CVS Info: $Date: 2009/02/21 12:39:19 $ 
  $Header: /cvsroot/opeal/POE-Component-Algorithm-Evolutionary/lib/POE/Component/Algorithm/Evolutionary/Island/POEtic.pm,v 1.2 2009/02/21 12:39:19 jmerelo Exp $ 
  $Author: jmerelo $ 

DISCLAIMER OF WARRANTY ^

BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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