| line | stmt | bran | cond | sub | pod | time | code | 
| 1 | 1 |  |  | 1 |  | 5 | use strict; #-*-cperl-*- | 
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| 2 | 1 |  |  | 1 |  | 4 | use warnings; | 
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| 3 |  |  |  |  |  |  |  | 
| 4 |  |  |  |  |  |  | =head1 NAME | 
| 5 |  |  |  |  |  |  |  | 
| 6 |  |  |  |  |  |  | Algorithm::Evolutionary::Op::Selector - Abstract base class for population selectors | 
| 7 |  |  |  |  |  |  |  | 
| 8 |  |  |  |  |  |  | =head1 SYNOPSIS | 
| 9 |  |  |  |  |  |  |  | 
| 10 |  |  |  |  |  |  | package My::Selector; | 
| 11 |  |  |  |  |  |  | use base ' Algorithm::Evolutionary::Op::Selector'; | 
| 12 |  |  |  |  |  |  |  | 
| 13 |  |  |  |  |  |  | =head1 Base Class | 
| 14 |  |  |  |  |  |  |  | 
| 15 |  |  |  |  |  |  | L | 
| 16 |  |  |  |  |  |  |  | 
| 17 |  |  |  |  |  |  | =head1 DESCRIPTION | 
| 18 |  |  |  |  |  |  |  | 
| 19 |  |  |  |  |  |  | Abstract base class for population selectors; defines a few instance | 
| 20 |  |  |  |  |  |  | variables and interface elements | 
| 21 |  |  |  |  |  |  |  | 
| 22 |  |  |  |  |  |  | =head1 METHODS | 
| 23 |  |  |  |  |  |  |  | 
| 24 |  |  |  |  |  |  | =cut | 
| 25 |  |  |  |  |  |  |  | 
| 26 |  |  |  |  |  |  | package Algorithm::Evolutionary::Op::Selector; | 
| 27 | 1 |  |  | 1 |  | 4 | use Carp; | 
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|  | 1 |  |  |  |  | 74 |  | 
| 28 |  |  |  |  |  |  |  | 
| 29 |  |  |  |  |  |  | our ($VERSION) = ( '$Revision: 3.0 $ ' =~ / (\d+\.\d+)/ ) ; | 
| 30 |  |  |  |  |  |  |  | 
| 31 | 1 |  |  | 1 |  | 7 | use base 'Algorithm::Evolutionary::Op::Base'; | 
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|  | 1 |  |  |  |  | 111 |  | 
| 32 |  |  |  |  |  |  |  | 
| 33 |  |  |  |  |  |  | =head2 new( $output_population_size ) | 
| 34 |  |  |  |  |  |  |  | 
| 35 |  |  |  |  |  |  | Creates a new selector which outputs a fixed amount of | 
| 36 |  |  |  |  |  |  | individuals. This goes to the base class, since all selectors must | 
| 37 |  |  |  |  |  |  | know in advance how many they need to generate | 
| 38 |  |  |  |  |  |  |  | 
| 39 |  |  |  |  |  |  | =cut | 
| 40 |  |  |  |  |  |  |  | 
| 41 |  |  |  |  |  |  | sub new { | 
| 42 |  |  |  |  |  |  | my $class = shift; | 
| 43 |  |  |  |  |  |  | carp "Should be called from subclasses" if ( $class eq  __PACKAGE__ ); | 
| 44 |  |  |  |  |  |  | my $self = {}; | 
| 45 |  |  |  |  |  |  | $self->{_outputSize} = shift || croak "I need an output population size"; | 
| 46 |  |  |  |  |  |  | bless $self, $class; | 
| 47 |  |  |  |  |  |  | return $self; | 
| 48 |  |  |  |  |  |  | } | 
| 49 |  |  |  |  |  |  |  | 
| 50 |  |  |  |  |  |  | =head2 apply | 
| 51 |  |  |  |  |  |  |  | 
| 52 |  |  |  |  |  |  | Applies the tournament selection to a population, returning another of | 
| 53 |  |  |  |  |  |  | the set size. This is an abstract method that should be implemented by | 
| 54 |  |  |  |  |  |  | descendants. | 
| 55 |  |  |  |  |  |  |  | 
| 56 |  |  |  |  |  |  | =cut | 
| 57 |  |  |  |  |  |  |  | 
| 58 |  |  |  |  |  |  | sub apply (@) { | 
| 59 |  |  |  |  |  |  | croak "To be redefined by siblings"; | 
| 60 |  |  |  |  |  |  | } | 
| 61 |  |  |  |  |  |  |  | 
| 62 |  |  |  |  |  |  | =head1 Known descendants | 
| 63 |  |  |  |  |  |  |  | 
| 64 |  |  |  |  |  |  |  | 
| 65 |  |  |  |  |  |  | =over 4 | 
| 66 |  |  |  |  |  |  |  | 
| 67 |  |  |  |  |  |  | =item * | 
| 68 |  |  |  |  |  |  |  | 
| 69 |  |  |  |  |  |  | L | 
| 70 |  |  |  |  |  |  |  | 
| 71 |  |  |  |  |  |  | =item * | 
| 72 |  |  |  |  |  |  |  | 
| 73 |  |  |  |  |  |  | L | 
| 74 |  |  |  |  |  |  |  | 
| 75 |  |  |  |  |  |  | =back | 
| 76 |  |  |  |  |  |  |  | 
| 77 |  |  |  |  |  |  | =head1 Copyright | 
| 78 |  |  |  |  |  |  |  | 
| 79 |  |  |  |  |  |  | This file is released under the GPL. See the LICENSE file included in this distribution, | 
| 80 |  |  |  |  |  |  | or go to http://www.fsf.org/licenses/gpl.txt | 
| 81 |  |  |  |  |  |  |  | 
| 82 |  |  |  |  |  |  | CVS Info: $Date: 2009/07/24 08:46:59 $ | 
| 83 |  |  |  |  |  |  | $Header: /media/Backup/Repos/opeal/opeal/Algorithm-Evolutionary/lib/Algorithm/Evolutionary/Op/Selector.pm,v 3.0 2009/07/24 08:46:59 jmerelo Exp $ | 
| 84 |  |  |  |  |  |  | $Author: jmerelo $ | 
| 85 |  |  |  |  |  |  |  | 
| 86 |  |  |  |  |  |  | =cut | 
| 87 |  |  |  |  |  |  |  | 
| 88 |  |  |  |  |  |  | "C'mon Eileen"; |