00001 /* 00002 * This program is free software; you can redistribute it and/or modify 00003 * it under the terms of the GNU General Public License as published by 00004 * the Free Software Foundation; either version 3 of the License, or 00005 * (at your option) any later version. 00006 * 00007 * Written (W) 2007-2009 Soeren Sonnenburg 00008 * Copyright (C) 2007-2009 Fraunhofer Institute FIRST and Max-Planck-Society 00009 */ 00010 00011 #ifndef _LPBOOST_H___ 00012 #define _LPBOOST_H___ 00013 00014 #include "lib/config.h" 00015 #ifdef USE_CPLEX 00016 00017 #include <stdio.h> 00018 #include "lib/common.h" 00019 #include "lib/DynamicArray.h" 00020 00021 #include "features/Features.h" 00022 #include "features/SparseFeatures.h" 00023 #include "classifier/LinearClassifier.h" 00024 00025 namespace shogun 00026 { 00048 class CLPBoost : public CLinearClassifier 00049 { 00050 public: 00051 CLPBoost(); 00052 virtual ~CLPBoost(); 00053 00062 virtual bool train(CFeatures* data=NULL); 00063 00064 inline virtual EClassifierType get_classifier_type() 00065 { 00066 return CT_LPBOOST; 00067 } 00068 00069 bool init(int32_t num_vec); 00070 void cleanup(); 00071 00076 virtual inline void set_features(CDotFeatures* feat) 00077 { 00078 if (feat->get_feature_class() != C_SPARSE || 00079 feat->get_feature_type() != F_DREAL) 00080 SG_ERROR("LPBoost requires SPARSE REAL valued features\n"); 00081 00082 CLinearClassifier::set_features(feat); 00083 } 00084 00091 inline void set_C(float64_t c_neg, float64_t c_pos) { C1=c_neg; C2=c_pos; } 00092 00093 inline float64_t get_C1() { return C1; } 00094 inline float64_t get_C2() { return C2; } 00095 00096 inline void set_bias_enabled(bool enable_bias) { use_bias=enable_bias; } 00097 inline bool get_bias_enabled() { return use_bias; } 00098 00099 inline void set_epsilon(float64_t eps) { epsilon=eps; } 00100 inline float64_t get_epsilon() { return epsilon; } 00101 00102 float64_t find_max_violator(int32_t& max_dim); 00103 00105 inline virtual const char* get_name() const { return "LPBoost"; } 00106 00107 protected: 00108 float64_t C1; 00109 float64_t C2; 00110 bool use_bias; 00111 float64_t epsilon; 00112 00113 float64_t* u; 00114 CDynamicArray<int32_t>* dim; 00115 00116 int32_t num_sfeat; 00117 int32_t num_svec; 00118 TSparse<float64_t>* sfeat; 00119 00120 }; 00121 } 00122 #endif //USE_CPLEX 00123 #endif //_LPBOOST_H___