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Algorithm-Evolutionary-0.78
River stage one • 3 direct dependents • 4 total dependents
2 ++
/ Algorithm::Evolutionary::Hash_Wheel

NAME

Algorithm::Evolutionary::Hash_Wheel - Random selector of things depending on probabilities

SYNOPSIS

    my $wheel = new Algorithm::Evolutionary::Hash_Wheel( \%probs );
    print $wheel->spin(); #Returns an element according to probabilities;

DESCRIPTION

Creates a "roulette wheel" for spinning and selecting stuff. It will be used in several places; mainly in the Algorithm::Evolutionary::Op::CanonicalGA. It's similar to Algorithm::Evolutionary::Wheel, but with a hash instead of an array. Probably should unify both..

METHODS

new( $probabilities_hashref )

Creates a new roulette wheel. Takes a hashref, which uses as keys the objects to be returned by the roulette wheel, and as values the ones that are going to be used

spin()

Returns a single individual whose probability is related to its fitness TODO: should return many, probably

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: 2010/03/16 18:39:40 $ 
  $Header: /cvsroot/opeal/Algorithm-Evolutionary/lib/Algorithm/Evolutionary/Hash_Wheel.pm,v 1.2 2010/03/16 18:39:40 jmerelo Exp $ 
  $Author: jmerelo $