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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 
14 #include <shogun/lib/config.h>
15 
18 #include <shogun/lib/common.h>
19 
20 #include <stdio.h>
21 
22 namespace shogun
23 {
33 class CPNorm : public CDensePreprocessor<float64_t>
34 {
35  public:
37  CPNorm ();
38 
42  CPNorm (double p);
43 
45  virtual ~CPNorm ();
46 
48  virtual bool init (CFeatures* features);
50  virtual void cleanup ();
52  virtual bool load (FILE* f);
54  virtual bool save (FILE* f);
55 
60 
64 
66  virtual const char* get_name () const { return "PNorm"; }
67 
69  virtual EPreprocessorType get_type () const { return P_PNORM; }
70 
75  void set_pnorm (double pnorm);
76 
81  double get_pnorm () const;
82 
83  private:
84  void register_param ();
85  inline float64_t get_pnorm (float64_t* vec, int32_t vec_len) const;
86 
87  private:
88  double m_p;
89 };
90 }
91 #endif /* _PNORM_ONE__H__ */
EPreprocessorType
Definition: Preprocessor.h:32
virtual EPreprocessorType get_type() const
return a type of preprocessor
Definition: PNorm.h:69
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:66
Template class DensePreprocessor, base class for preprocessors (cf. CPreprocessor) that apply to CDen...
Preprocessor PNorm, normalizes vectors to have p-norm.
Definition: PNorm.h:33
double float64_t
Definition: common.h:50
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:68

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