Mutation - BitFlip mutation, changes several bits, depending on the probability
my $op = new GPMutation (0.5 ); #Create from scratch
Mutation operator for a genetic programming, mutates tree nodes with a certain probability
Creates a new mutation operator with an application rate. Rate defaults to 0.1.
Creates a new mutation operator with an application rate. Rate defaults to 0.5.
Called create to distinguish from the classwide ctor, new. It just makes simpler to create a Mutation Operator
Applies mutation operator to a ``Chromosome'', a bitstring, really. Can be
applied only to victims with the
_str instance variable; but
it checks before application that both operands are of type
Callback routine called from apply; decides on mutation application, and applies it. If appliable, substitutes a node by other with the same arity. Builds a lists of nodes before, to speed up operation
Prints as XML, following the EvoSpec 0.2 XML specification. Should be called from derived classes, not by itself.
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: 2002/02/01 09:39:58 $ $Header: /cvsroot/opeal/opeal/GPMutation.pm,v 1.2 2002/02/01 09:39:58 jmerelo Exp $ $Author: jmerelo $ $Revision: 1.2 $