itkLBFGSOptimizerBasev4.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef itkLBFGSOptimizerBasev4_h
#define itkLBFGSOptimizerBasev4_h
 
#include "itkSingleValuedNonLinearVnlOptimizerv4.h"
#include "vnl/algo/vnl_lbfgs.h"
#include "vnl/algo/vnl_lbfgsb.h"
#include <memory>
#include "ITKOptimizersv4Export.h"
 
namespace itk
{
/* Necessary forward declaration see below for definition */
// Forward reference because of circular dependencies
template <typename TInternalVnlOptimizerType>
class ITK_TEMPLATE_EXPORT LBFGSOptimizerBaseHelperv4;
 
template <typename TInternalVnlOptimizerType>
class ITK_TEMPLATE_EXPORT LBFGSOptimizerBasev4 : public SingleValuedNonLinearVnlOptimizerv4
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(LBFGSOptimizerBasev4);
 
  using Self = LBFGSOptimizerBasev4;
  using Superclass = SingleValuedNonLinearVnlOptimizerv4;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
 
  itkTypeMacro(LBFGSOptimizerBasev4, SingleValuedNonLinearVnlOptimizerv4);
 
  using MetricType = Superclass::MetricType;
  using ParametersType = Superclass::ParametersType;
  using ScalesType = Superclass::ScalesType;
 
  using StopConditionReturnStringType = Superclass::StopConditionReturnStringType;
 
  using StopConditionDescriptionType = Superclass::StopConditionDescriptionType;
 
  using InternalOptimizerType = LBFGSOptimizerBaseHelperv4<TInternalVnlOptimizerType>;
 
  InternalOptimizerType *
  GetOptimizer();
 
  void
  StartOptimization(bool doOnlyInitialization = false) override;
 
  void
  SetMetric(MetricType * metric) override;
 
  virtual void
  SetTrace(bool flag);
 
  itkGetConstMacro(Trace, bool);
  itkBooleanMacro(Trace);
 
  virtual void
  SetMaximumNumberOfFunctionEvaluations(unsigned int n);
 
  itkGetConstMacro(MaximumNumberOfFunctionEvaluations, unsigned int);
 
  virtual void
  SetGradientConvergenceTolerance(double f);
 
  itkGetConstMacro(GradientConvergenceTolerance, double);
 
  const StopConditionReturnStringType
  GetStopConditionDescription() const override;
 
protected:
  LBFGSOptimizerBasev4();
  ~LBFGSOptimizerBasev4() override = default;
  void
  PrintSelf(std::ostream & os, Indent indent) const override;
 
  using CostFunctionAdaptorType = Superclass::CostFunctionAdaptorType;
 
  bool m_OptimizerInitialized{ false };
 
  using InternalOptimizerAutoPointer = std::unique_ptr<InternalOptimizerType>;
  InternalOptimizerAutoPointer m_VnlOptimizer;
 
  mutable std::ostringstream m_StopConditionDescription;
 
  bool         m_Trace{ false };
  unsigned int m_MaximumNumberOfFunctionEvaluations{ 2000 };
  double       m_GradientConvergenceTolerance{ 1e-5 };
  double       m_InfinityNormOfProjectedGradient{ 0.0 };
  double       m_CostFunctionConvergenceFactor{ 1e+7 };
 
  // give the helper access to member variables, to update iteration
  // counts, etc.
  friend class LBFGSOptimizerBaseHelperv4<TInternalVnlOptimizerType>;
  friend class LBFGSBOptimizerHelperv4;
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkLBFGSOptimizerBasev4.hxx"
#endif
 
#endif