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lib/AI/NNEasy/NN/backprop.pm  view on Meta::CPAN

#############################################################################
## This file was generated automatically by Class::HPLOO/0.21
##
## Original file:    ./lib/AI/NNEasy/NN/backprop.hploo
## Generation date:  2005-01-16 19:52:01
##
## ** Do not change this file, use the original HPLOO source! **
#############################################################################

#############################################################################
## Name:        backprop.pm
## Purpose:     AI::NNEasy::NN::backprop
## Author:      Graciliano M. P. 
## Modified by:
## Created:     2005-01-14
## RCS-ID:      
## Copyright:   (c) 2005 Graciliano M. P. 
## Licence:     This program is free software; you can redistribute it and/or
##              modify it under the same terms as Perl itself
#############################################################################


{ package AI::NNEasy::NN::backprop ;


use strict qw(vars) ; no warnings ;


use vars qw(%CLASS_HPLOO @ISA $VERSION) ;


$VERSION = '0.06' ;


@ISA = qw(Class::HPLOO::Base UNIVERSAL) ;


my $CLASS = 'AI::NNEasy::NN::backprop' ; sub __CLASS__ { 'AI::NNEasy::NN::backprop' } ;


use Class::HPLOO::Base ;



  sub calc_error { 
    my $this = ref($_[0]) ? shift : undef ;
    my $CLASS = ref($this) || __PACKAGE__ ;
    my $outputPatternRef = shift(@_) ;
    
    my @outputPattern = @$outputPatternRef;

    my $outputLayer = $this->{layers}->[-1]->{nodes} ;

    return 0 if @$outputLayer != @outputPattern ;

    my $counter = 0 ;
    foreach my $node (@$outputLayer) {
      $node->{error} = $node->{activation} - $outputPattern[$counter] ;
      ++$counter ;
    }
  }
  
  sub learn { 
    my $this = ref($_[0]) ? shift : undef ;
    my $CLASS = ref($this) || __PACKAGE__ ;
    my $outputPatternRef = shift(@_) ;