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lib/Algorithm/Evolutionary/Simple.pm  view on Meta::CPAN

Creates a binary chromosome, with uniform distribution of 0s and 1s,
and returns it as a string.

=head2 max_ones( $string )

Classical function that returns the number of ones in a binary string.


=head2 max_ones_fast( $string )

Faster implementation of max_ones.

=head2 spin($wheel, $slots )

Mainly for internal use, $wheel has the normalized probability, and
  $slots the number of individuals to return.

=head2 single_generation( $population_arrayref, $fitness_of_hashref )

Applies all steps to arrive to a new generation, except
evaluation. Keeps the two best for the next generation.

=head2 get_pool_roulette_wheel( $population_arrayref, $fitness_of_hashref, $how_many_I_need )

Obtains a pool of new chromosomes using fitness_proportional selection


=head2 get_pool_binary_tournament( $population_arrayref, $fitness_of_hashref, $how_many_I_need )

Obtains a pool of new chromosomes using binary tournament, a greedier method.

=head2 produce_offspring( $population_hashref, $how_many_I_need )

Uses mutation first and then crossover to obtain a new population

=head2 mutate( $string )

Bitflips a a single point in the binary string

=head2 crossover( $one_string, $another_string )

Applies two-point crossover to both strings, returning them changed

=head1 DIAGNOSTICS

Will complain if some argument is missing.


Algorithm::Evolutionary::Simple requires no configuration files or environment variables.


=head1 DEPENDENCIES

L<Sort::Key::Top> for efficient sorting.

=head1 SEE ALSO

There are excellent evolutionary algorithm libraries out there; see
  for instance L<AI::Genetic::Pro>

=head1 BUGS AND LIMITATIONS

It's intended for simplicity, not flexibility. If you want a
  full-featured evolutionary algorithm library, check L<Algorithm::Evolutionary>

Please report any bugs or feature requests to
C<bug-algorithm-evolutionary-simple@rt.cpan.org>, or through the web interface at
L<http://rt.cpan.org>.


=head1 AUTHOR

JJ Merelo C<< <jj@merelo.net> >>


=head1 LICENCE AND COPYRIGHT

Copyright (c) 2011, JJ Merelo C<< <jj@merelo.net> >>. All rights reserved.

This module is free software; you can redistribute it and/or
modify it under the GPL v3 licence.


=head1 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
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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,
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