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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkQuickPropLearningRule.h
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.
=========================================================================*/
/*
The QuickPropLearningRule is the base class for all the ErrorBackPropagationLearning strategies. These
include error back propagation, bp+momentum, conjugte gradient descent, quick prop.
This class specifies how the errors are backpropagated for a layer. They take a LayerBase
object as input and compute the input for the layers input weightset
*/
#ifndef __itkQuickPropLearningRule_h
#define __itkQuickPropLearningRule_h
#include <iostream>
#include "itkLightProcessObject.h"
#include "itkLearningFunctionBase.h"
namespace itk
{
namespace Statistics
{
template<class LayerType, class TTargetVector>
class QuickPropLearningRule : public LearningFunctionBase<LayerType, TTargetVector>
{
public:
typedef QuickPropLearningRule Self;
typedef LearningFunctionBase<LayerType, TTargetVector> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkTypeMacro(QuickPropLearningRule, LearningFunctionBase);
/** Method for creation through the object factory. */
itkNewMacro(Self);
typedef typename Superclass::ValueType ValueType;
virtual void Learn(LayerType* layer, ValueType learningrate);
virtual void Learn(LayerType* layer, TTargetVector errors, ValueType learningrate);
itkSetMacro(Max_Growth_Factor, ValueType);
itkGetConstReferenceMacro(Max_Growth_Factor,ValueType);
itkSetMacro(Decay, ValueType);
itkGetConstReferenceMacro(Decay,ValueType);
protected:
QuickPropLearningRule();
virtual ~QuickPropLearningRule(){};
ValueType m_Momentum;
ValueType m_Max_Growth_Factor;
ValueType m_Decay;
ValueType m_Threshold;
ValueType m_Epsilon;
ValueType m_SigmoidPrimeOffset;
ValueType m_SplitEpsilon;
/** Method to print the object. */
virtual void PrintSelf( std::ostream& os, Indent indent ) const;
};
} // end namespace Statistics
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkQuickPropLearningRule.txx"
#endif
#endif
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