/usr/include/InsightToolkit/Numerics/itkRegularStepGradientDescentOptimizer.h is in libinsighttoolkit3-dev 3.20.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 | /*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkRegularStepGradientDescentOptimizer.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.
=========================================================================*/
#ifndef __itkRegularStepGradientDescentOptimizer_h
#define __itkRegularStepGradientDescentOptimizer_h
#include "itkRegularStepGradientDescentBaseOptimizer.h"
namespace itk
{
/** \class RegularStepGradientDescentOptimizer
* \brief Implement a gradient descent optimizer
*
* \ingroup Numerics Optimizers
*
*/
class ITK_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 );
private:
RegularStepGradientDescentOptimizer(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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