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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkErrorBackPropagationLearningFunctionBase.txx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkErrorBackPropagationLearningFunctionBase_txx
#define __itkErrorBackPropagationLearningFunctionBase_txx
#include "itkErrorBackPropagationLearningFunctionBase.h"
namespace itk
{
namespace Statistics
{
template<class LayerType, class TTargetVector>
void
ErrorBackPropagationLearningFunctionBase<LayerType,TTargetVector>
::Learn( LayerInterfaceType * layer, ValueType lr )
{
int num_nodes = layer->GetNumberOfNodes();
typename LayerInterfaceType::WeightSetType::Pointer outputweightset;
typename LayerInterfaceType::WeightSetType::Pointer inputweightset;
outputweightset = layer->GetOutputWeightSet();
inputweightset = layer->GetInputWeightSet();
typename LayerInterfaceType::ValuePointer currentdeltavalues = inputweightset->GetTotalDeltaValues();
vnl_matrix<ValueType> DW_temp(currentdeltavalues,inputweightset->GetNumberOfOutputNodes(),
inputweightset->GetNumberOfInputNodes());
DW_temp *= lr;
inputweightset->SetDWValues(DW_temp.data_block());
typename LayerType::LayerInterfaceType::ValuePointer DBValues = inputweightset->GetDeltaBValues();
vnl_vector<ValueType> DB;
DB.set_size(inputweightset->GetNumberOfOutputNodes());
DB.fill(0);
DB.copy_in(DBValues);
DB *= lr;
inputweightset->SetDBValues(DB.data_block());
}
/** */
template<class LayerType, class TTargetVector>
void
ErrorBackPropagationLearningFunctionBase<LayerType,TTargetVector>
::Learn( LayerInterfaceType * layer, TTargetVector errors, ValueType lr)
{
}
/** Print the object */
template<class LayerType, class TTargetVector>
void
ErrorBackPropagationLearningFunctionBase<LayerType,TTargetVector>
::PrintSelf( std::ostream& os, Indent indent ) const
{
os << indent << "ErrorBackPropagationLearningFunctionBase(" << this << ")" << std::endl;
Superclass::PrintSelf( os, indent );
}
} // end namespace Statistics
} // end namespace itk
#endif
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