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itkAdaptiveStochasticGradientDescentOptimizer.h
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1 /*=========================================================================
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3  * Copyright UMC Utrecht and contributors
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5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
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11  * Unless required by applicable law or agreed to in writing, software
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13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
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17  *=========================================================================*/
18 
19 #ifndef __itkAdaptiveStochasticGradientDescentOptimizer_h
20 #define __itkAdaptiveStochasticGradientDescentOptimizer_h
21 
22 #include "../StandardGradientDescent/itkStandardGradientDescentOptimizer.h"
23 
24 namespace itk
25 {
26 
74 {
75 public:
76 
80 
82  typedef SmartPointer< const Self > ConstPointer;
83 
85  itkNewMacro( Self );
86 
90 
100 
102  itkSetMacro( UseAdaptiveStepSizes, bool );
103  itkGetConstMacro( UseAdaptiveStepSizes, bool );
104 
107  itkSetMacro( SigmoidMax, double );
108  itkGetConstMacro( SigmoidMax, double );
109 
112  itkSetMacro( SigmoidMin, double );
113  itkGetConstMacro( SigmoidMin, double );
114 
117  itkSetMacro( SigmoidScale, double );
118  itkGetConstMacro( SigmoidScale, double );
119 
120 protected:
121 
124 
132  virtual void UpdateCurrentTime( void );
133 
135  DerivativeType m_PreviousGradient;
136 
137 private:
138 
139  AdaptiveStochasticGradientDescentOptimizer( const Self & ); // purposely not implemented
140  void operator=( const Self & ); // purposely not implemented
141 
144  double m_SigmoidMax;
145  double m_SigmoidMin;
147 
148 };
149 
150 } // end namespace itk
151 
152 #endif // end #ifndef __itkAdaptiveStochasticGradientDescentOptimizer_h
This class implements a gradient descent optimizer with a decaying gain.
Superclass::ScaledCostFunctionPointer ScaledCostFunctionPointer
This class implements a gradient descent optimizer with adaptive gain.
Superclass::ScaledCostFunctionType ScaledCostFunctionType


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