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LPBoost.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) 2007-2009 Soeren Sonnenburg
8  * Copyright (C) 2007-2009 Fraunhofer Institute FIRST and Max-Planck-Society
9  */
10 
11 #ifndef _LPBOOST_H___
12 #define _LPBOOST_H___
13 
14 #include <shogun/lib/config.h>
15 #ifdef USE_CPLEX
16 
17 #include <stdio.h>
18 #include <shogun/lib/common.h>
20 
24 
25 namespace shogun
26 {
48 class CLPBoost : public CLinearMachine
49 {
50  public:
52 
53  CLPBoost();
54  virtual ~CLPBoost();
55 
57  {
58  return CT_LPBOOST;
59  }
60 
61  bool init(int32_t num_vec);
62  void cleanup();
63 
68  virtual void set_features(CDotFeatures* feat)
69  {
70  if (feat->get_feature_class() != C_SPARSE ||
71  feat->get_feature_type() != F_DREAL)
72  SG_ERROR("LPBoost requires SPARSE REAL valued features\n")
73 
75  }
76 
83  inline void set_C(float64_t c_neg, float64_t c_pos) { C1=c_neg; C2=c_pos; }
84 
85  inline float64_t get_C1() { return C1; }
86  inline float64_t get_C2() { return C2; }
87 
88  inline void set_bias_enabled(bool enable_bias) { use_bias=enable_bias; }
89  inline bool get_bias_enabled() { return use_bias; }
90 
91  inline void set_epsilon(float64_t eps) { epsilon=eps; }
92  inline float64_t get_epsilon() { return epsilon; }
93 
94  float64_t find_max_violator(int32_t& max_dim);
95 
97  virtual const char* get_name() const { return "LPBoost"; }
98 
99  protected:
108  virtual bool train_machine(CFeatures* data=NULL);
109 
110  protected:
113  bool use_bias;
115 
118 
119  int32_t num_sfeat;
120  int32_t num_svec;
122 
123 };
124 }
125 #endif //USE_CPLEX
126 #endif //_LPBOOST_H___

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