J. J. Merelo-Guervós
and 1 contributors

NAME

Algorithm::Evolutionary::Fitness::String - Base class for string-based fitness functors

SYNOPSIS

    package My::Own::Fitness;
    use base 'Algorithm::Evolutionary::Fitness::String'; #Mainly for deriving
    
    my $evaluator = new My::Own::Fitness;
    my $cache_hits = $evaluator->cached_evals();

DESCRIPTION

Base class for fitness functions applied to string-based chromosomes; extracts common code, and saves time. Provides a hash called %cache to be used as a, well, cache for evaluations. Assumes it's using the _str instance variable of the chromosome

METHODS

new()

Initializes the cache

_apply( $individual )

Applies the instantiated problem to a chromosome, delegating to a specific function

_really_apply( $string )

This one applies the function to the string. Should be overloaded

cached_evals()

Returns the number of keys in the evaluation cache, which can be compared to the total number of evaluations to find the cache hit rate.

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