/ 
Algorithm-Evolutionary-0.76_1
River stage one • 3 direct dependents • 4 total dependents
/ Algorithm::Evolutionary::Op::Novelty_Mutation

NAME

Algorithm::Evolutionary::Op::Novelty_Mutation - Mutation guaranteeing new individual is not in the population

SYNOPSIS

 my $mmdp = new  Algorithm::Evolutionary::Fitness::MMDP;
 my $bits = 36;
 my @population;
 for ( 1..100 ) { #Create and evaluate a population
   my $indi = new Algorithm::Evolutionary::Individual::BitString $bits;
   $indi->evaluate( $mmdp );
   push @population, $indi;
 }
 my $nm = new Algorithm::Evolutionary::Op::Novelty_Mutation $mmdp->{'_cache'}; #Initialize using cache
 $nm->apply($population[$i]);

Base Class

Algorithm::Evolutionary::Op::Base

DESCRIPTION

Attempts all possible mutations in order, until a "novelty" individual is found. Generated individuals are checked against the population hash, and discarded if they are already in the population.

METHODS

new( $ref_to_population_hash [,$priority] )

Creates a new mutation operator with an operator application rate (general for all ops), which defaults to 1, and stores the reference to population hash.

apply( $chromosome )

Applies mutation operator to a "Chromosome", a bitstring, really. Can be applied only to victims composed of [0,1] atoms, independently of representation; but it checks before application that the operand is of type BitString.

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: 2011/02/14 06:55:36 $ 
$Header: /cvsroot/opeal/Algorithm-Evolutionary/lib/Algorithm/Evolutionary/Op/Novelty_Mutation.pm,v 3.1 2011/02/14 06:55:36 jmerelo Exp $ 
$Author: jmerelo $ 
$Revision: 3.1 $
$Name $