itkAdaptiveStochasticPreconditionedGradientDescentOptimizer.h

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#ifndef itkAdaptiveStochasticPreconditionedGradientDescentOptimizer_h
#define itkAdaptiveStochasticPreconditionedGradientDescentOptimizer_h
 
#include "itkStochasticPreconditionedGradientDescentOptimizer.h"
 
#include <vnl/vnl_math.h>
#include "itkSigmoidImageFilter.h"
 
namespace itk
{
class AdaptiveStochasticPreconditionedGradientDescentOptimizer : public StochasticPreconditionedGradientDescentOptimizer
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(AdaptiveStochasticPreconditionedGradientDescentOptimizer);
 
  using Self = AdaptiveStochasticPreconditionedGradientDescentOptimizer;
  using Superclass = StochasticPreconditionedGradientDescentOptimizer;
 
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
 
  itkNewMacro(Self);
 
  itkTypeMacro(AdaptiveStochasticPreconditionedGradientDescentOptimizer,
               StochasticPreconditionedGradientDescentOptimizer);
 
  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(UseAdaptiveStepSizes, bool);
  itkGetConstMacro(UseAdaptiveStepSizes, bool);
 
  itkSetMacro(SigmoidMax, double);
  itkGetConstMacro(SigmoidMax, double);
 
  itkSetMacro(SigmoidMin, double);
  itkGetConstMacro(SigmoidMin, double);
 
  itkSetMacro(SigmoidScale, double);
  itkGetConstMacro(SigmoidScale, double);
 
protected:
  AdaptiveStochasticPreconditionedGradientDescentOptimizer();
  virtual ~AdaptiveStochasticPreconditionedGradientDescentOptimizer(){};
 
  virtual void
  UpdateCurrentTime();
 
  DerivativeType m_PreviousSearchDirection;
 
private:
  bool   m_UseAdaptiveStepSizes{ true };
  double m_SigmoidMax{ 1.0 };
  double m_SigmoidMin{ -0.8 };
  double m_SigmoidScale{ 1e-8 };
 
}; // end class AdaptiveStochasticPreconditionedGradientDescentOptimizer
 
 
} // end namespace itk
 
 
#endif // end #ifndef itkAdaptiveStochasticPreconditionedGradientDescentOptimizer_h