NAME
Algorithm::Evolutionary::Fitness::Base - Base class for fitness functions
SYNOPSIS
Shouldn't be used directly, it's an abstract class whose siblings are used to implement fitness functions.
DESCRIPTION
This module includes functionality that should be common to all fitness. Or at least it would be nice to have it in common. It counts the number of evaluations and includes a common API for caching evaluations.
METHODS
new()
Initializes common variables, like the number of evaluations. Cache is not initialized.
initialize()
Called from new, initializes the evaluations counter.
apply( $individual )
Applies the instantiated problem to a chromosome. Actually it is a wrapper around _apply
_apply( $individual )
This is the one that really does the stuff. Should be overloaded by derived clases
evaluations()
Returns the number of evaluations made with this object. Useful for collecting stats
reset_evaluations()
Sets to 0 the number of evaluations; useful for repeated use of the fitness object
cache()
Returns a reference to the internal evaluations cache. Not very encapsulated, but...
Known subclasses
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