/usr/include/ITK-4.9/itkRegularStepGradientDescentOptimizer.h is in libinsighttoolkit4-dev 4.9.0-4ubuntu1.
This file is owned by root:root, with mode 0o644.
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*
* Copyright Insight Software Consortium
*
* 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 itkRegularStepGradientDescentOptimizer_h
#define itkRegularStepGradientDescentOptimizer_h
#include "itkRegularStepGradientDescentBaseOptimizer.h"
#include "ITKOptimizersExport.h"
namespace itk
{
/** \class RegularStepGradientDescentOptimizer
* \brief Implement a gradient descent optimizer
*
* \ingroup Numerics Optimizers
*
* \ingroup ITKOptimizers
*/
class ITKOptimizers_EXPORT RegularStepGradientDescentOptimizer:
public RegularStepGradientDescentBaseOptimizer
{
public:
/** Standard class typedefs. */
typedef RegularStepGradientDescentOptimizer Self;
typedef RegularStepGradientDescentBaseOptimizer Superclass;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(RegularStepGradientDescentOptimizer,
RegularStepGradientDescentBaseOptimizer);
/** Cost function typedefs. */
typedef Superclass::CostFunctionType CostFunctionType;
typedef CostFunctionType::Pointer CostFunctionPointer;
protected:
RegularStepGradientDescentOptimizer() {}
virtual ~RegularStepGradientDescentOptimizer() {}
/** Advance one step along the corrected gradient taking into
* account the steplength represented by factor.
* This method is invoked by AdvanceOneStep. It is expected
* to be overrided by optimization methods in non-vector spaces
* \sa AdvanceOneStep */
virtual void StepAlongGradient(
double factor,
const DerivativeType & transformedGradient) ITK_OVERRIDE;
private:
RegularStepGradientDescentOptimizer(const Self &) ITK_DELETE_FUNCTION;
void operator=(const Self &) ITK_DELETE_FUNCTION;
};
} // end namespace itk
#endif
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