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PNorm.h
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1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License as published by
4  * the Free Software Foundation; either version 3 of the License, or
5  * (at your option) any later version.
6  *
7  * Written (W) 2012 Viktor Gal
8  * Copyright (C) 2012 Viktor Gal
9  */
10 
11 #ifndef _PNORM_ONE__H__
12 #define _PNORM_ONE__H__
13 
16 #include <shogun/lib/common.h>
17 
18 #include <stdio.h>
19 
20 namespace shogun
21 {
31 class CPNorm : public CDensePreprocessor<float64_t>
32 {
33  public:
35  CPNorm ();
36 
40  CPNorm (double p);
41 
43  virtual ~CPNorm ();
44 
46  virtual bool init (CFeatures* features);
48  virtual void cleanup ();
50  virtual bool load (FILE* f);
52  virtual bool save (FILE* f);
53 
58 
62 
64  virtual const char* get_name () const { return "PNorm"; }
65 
67  virtual EPreprocessorType get_type () const { return P_PNORM; }
68 
73  void set_pnorm (double pnorm);
74 
79  double get_pnorm () const;
80 
81  private:
82  void register_param ();
83  inline float64_t get_pnorm (float64_t* vec, int32_t vec_len) const;
84 
85  private:
86  double m_p;
87 };
88 }
89 #endif /* _PNORM_ONE__H__ */
EPreprocessorType
Definition: Preprocessor.h:30
virtual EPreprocessorType get_type() const
return a type of preprocessor
Definition: PNorm.h:67
virtual ~CPNorm()
Definition: PNorm.cpp:37
void set_pnorm(double pnorm)
Definition: PNorm.cpp:100
virtual bool save(FILE *f)
save preprocessor init-data to file
Definition: PNorm.cpp:64
virtual void cleanup()
cleanup
Definition: PNorm.cpp:51
virtual SGMatrix< float64_t > apply_to_feature_matrix(CFeatures *features)
Definition: PNorm.cpp:74
virtual const char * get_name() const
Definition: PNorm.h:64
Template class DensePreprocessor, base class for preprocessors (cf. CPreprocessor) that apply to CDen...
Preprocessor PNorm, normalizes vectors to have p-norm.
Definition: PNorm.h:31
double float64_t
Definition: common.h:48
double get_pnorm() const
Definition: PNorm.cpp:107
virtual SGVector< float64_t > apply_to_feature_vector(SGVector< float64_t > vector)
Definition: PNorm.cpp:89
virtual bool init(CFeatures *features)
initialize preprocessor from features
Definition: PNorm.cpp:42
virtual bool load(FILE *f)
initialize preprocessor from file
Definition: PNorm.cpp:56
The class Features is the base class of all feature objects.
Definition: Features.h:62

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