A.I.M.S algorithms


m-func.h
Go to the documentation of this file.
1 /* This software and supporting documentation are distributed by
2  * Institut Federatif de Recherche 49
3  * CEA/NeuroSpin, Batiment 145,
4  * 91191 Gif-sur-Yvette cedex
5  * France
6  *
7  * This software is governed by the CeCILL-B license under
8  * French law and abiding by the rules of distribution of free software.
9  * You can use, modify and/or redistribute the software under the
10  * terms of the CeCILL-B license as circulated by CEA, CNRS
11  * and INRIA at the following URL "http://www.cecill.info".
12  *
13  * As a counterpart to the access to the source code and rights to copy,
14  * modify and redistribute granted by the license, users are provided only
15  * with a limited warranty and the software's author, the holder of the
16  * economic rights, and the successive licensors have only limited
17  * liability.
18  *
19  * In this respect, the user's attention is drawn to the risks associated
20  * with loading, using, modifying and/or developing or reproducing the
21  * software by the user in light of its specific status of free software,
22  * that may mean that it is complicated to manipulate, and that also
23  * therefore means that it is reserved for developers and experienced
24  * professionals having in-depth computer knowledge. Users are therefore
25  * encouraged to load and test the software's suitability as regards their
26  * requirements in conditions enabling the security of their systems and/or
27  * data to be ensured and, more generally, to use and operate it in the
28  * same conditions as regards security.
29  *
30  * The fact that you are presently reading this means that you have had
31  * knowledge of the CeCILL-B license and that you accept its terms.
32  */
33 
34 
35 #ifndef AIMS_ESTIMATION_M_FUNC_H
36 #define AIMS_ESTIMATION_M_FUNC_H
37 
39 
40 
41 //
42 // M-estimator function base class
43 //
45 {
46  public:
47  MEstimatorFunc() : _sigma( 1.0 ), _sigma2( 1.0 ) { }
48  virtual ~MEstimatorFunc() { }
49 
50  virtual float norm( float ) const { return 0.0; }
51  virtual float influence( float ) const { return 0.0; }
52  virtual float weight( float ) const { return 0.0; }
53 
54  virtual void setSigma( float sigma )
55  {
56  _sigma = sigma;
57  _sigma2 = sigma * sigma;
58  }
59  float sigma() const { return _sigma; }
60 
61  protected:
62  float _sigma;
63  float _sigma2;
64 };
65 
66 
67 #endif
68 
float _sigma2
Definition: m-func.h:63
virtual float weight(float) const
Definition: m-func.h:52
float _sigma
Definition: m-func.h:62
virtual ~MEstimatorFunc()
Definition: m-func.h:48
virtual float norm(float) const
Definition: m-func.h:50
virtual float influence(float) const
Definition: m-func.h:51
#define AIMSALGO_API
virtual void setSigma(float sigma)
Definition: m-func.h:54
float sigma() const
Definition: m-func.h:59
MEstimatorFunc()
Definition: m-func.h:47