itkStochasticPreconditionedGradientDescentOptimizer.h

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#ifndef itkStochasticPreconditionedGradientDescentOptimizer_h
#define itkStochasticPreconditionedGradientDescentOptimizer_h
 
#include "itkPreconditionedGradientDescentOptimizer.h"
 
namespace itk
{
class StochasticPreconditionedGradientDescentOptimizer : public PreconditionedGradientDescentOptimizer
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(StochasticPreconditionedGradientDescentOptimizer);
 
  using Self = StochasticPreconditionedGradientDescentOptimizer;
  using Superclass = PreconditionedGradientDescentOptimizer;
 
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
 
  itkNewMacro(Self);
 
  itkTypeMacro(StochasticPreconditionedGradientDescentOptimizer, PreconditionedGradientDescentOptimizer);
 
  using Superclass::MeasureType;
  using Superclass::ParametersType;
  using Superclass::DerivativeType;
  using Superclass::CostFunctionType;
  using Superclass::ScalesType;
  using Superclass::ScaledCostFunctionType;
  using Superclass::ScaledCostFunctionPointer;
  using Superclass::StopConditionType;
 
  using Superclass::PreconditionValueType;
  using Superclass::PreconditionType;
  // using Superclass::EigenSystemType;
 
  itkSetMacro(Param_a, double);
  itkGetConstMacro(Param_a, double);
 
  itkSetMacro(Param_A, double);
  itkGetConstMacro(Param_A, double);
 
  itkSetMacro(Param_alpha, double);
  itkGetConstMacro(Param_alpha, double);
 
  virtual void
  AdvanceOneStep();
 
  virtual void
  StartOptimization();
 
  itkSetMacro(InitialTime, double);
  itkGetConstMacro(InitialTime, double);
 
  itkGetConstMacro(CurrentTime, double);
 
protected:
  StochasticPreconditionedGradientDescentOptimizer();
  virtual ~StochasticPreconditionedGradientDescentOptimizer(){};
 
  virtual double
  Compute_a(double k) const;
 
  virtual void
  UpdateCurrentTime();
 
  double m_CurrentTime{ 0.0 };
 
private:
  double m_Param_a{ 1.0 };
  double m_Param_A{ 1.0 };
  double m_Param_alpha{ 0.602 };
 
  double m_InitialTime{ 0.0 };
 
}; // end class StochasticPreconditionedGradientDescentOptimizer
 
 
} // end namespace itk
 
 
#endif // end #ifndef itkStochasticPreconditionedGradientDescentOptimizer_h