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) 2009 Soeren Sonnenburg 00008 * Copyright (C) 2009 Fraunhofer Institute FIRST and Max-Planck-Society 00009 */ 00010 00011 #ifndef _COMBINEDDOTFEATURES_H___ 00012 #define _COMBINEDDOTFEATURES_H___ 00013 00014 #include "lib/common.h" 00015 #include "lib/List.h" 00016 #include "features/DotFeatures.h" 00017 #include "features/Features.h" 00018 00038 class CCombinedDotFeatures : public CDotFeatures 00039 { 00040 public: 00042 CCombinedDotFeatures(); 00043 00045 CCombinedDotFeatures(const CCombinedDotFeatures & orig); 00046 00048 virtual ~CCombinedDotFeatures(); 00049 00050 inline virtual int32_t get_num_vectors() 00051 { 00052 return num_vectors; 00053 } 00054 00059 inline virtual int32_t get_dim_feature_space() 00060 { 00061 return num_dimensions; 00062 } 00063 00070 virtual float64_t dot(int32_t vec_idx1, int32_t vec_idx2); 00071 00078 virtual float64_t dense_dot(int32_t vec_idx1, const float64_t* vec2, int32_t vec2_len); 00079 00088 virtual void add_to_dense_vec(float64_t alpha, int32_t vec_idx1, float64_t* vec2, int32_t vec2_len, bool abs_val=false); 00089 00095 virtual int32_t get_nnz_features_for_vector(int32_t num); 00096 00101 inline virtual EFeatureType get_feature_type() 00102 { 00103 return F_DREAL; 00104 } 00105 00110 inline virtual EFeatureClass get_feature_class() 00111 { 00112 return C_COMBINED_DOT; 00113 } 00114 00115 inline virtual int32_t get_size() 00116 { 00117 return sizeof(float64_t); 00118 } 00119 00124 virtual CFeatures* duplicate() const; 00125 00127 void list_feature_objs(); 00128 00133 inline CDotFeatures* get_first_feature_obj() 00134 { 00135 CDotFeatures* f=feature_list->get_first_element(); 00136 SG_REF(f); 00137 return f; 00138 } 00139 00145 inline CDotFeatures* get_first_feature_obj(CListElement<CDotFeatures*>*¤t) 00146 { 00147 CDotFeatures* f=feature_list->get_first_element(current); 00148 SG_REF(f); 00149 return f; 00150 } 00151 00156 inline CDotFeatures* get_next_feature_obj() 00157 { 00158 CDotFeatures* f=feature_list->get_next_element(); 00159 SG_REF(f); 00160 return f; 00161 } 00162 00168 inline CDotFeatures* get_next_feature_obj(CListElement<CDotFeatures*>*¤t) 00169 { 00170 CDotFeatures* f=feature_list->get_next_element(current); 00171 SG_REF(f); 00172 return f; 00173 } 00174 00179 inline CDotFeatures* get_last_feature_obj() 00180 { 00181 CDotFeatures* f=feature_list->get_last_element(); 00182 SG_REF(f); 00183 return f; 00184 } 00185 00191 inline bool insert_feature_obj(CDotFeatures* obj) 00192 { 00193 ASSERT(obj); 00194 SG_REF(obj); 00195 bool result=feature_list->insert_element(obj); 00196 update_dim_feature_space_and_num_vec(); 00197 return result; 00198 } 00199 00205 inline bool append_feature_obj(CDotFeatures* obj) 00206 { 00207 ASSERT(obj); 00208 SG_REF(obj); 00209 bool result=feature_list->append_element(obj); 00210 update_dim_feature_space_and_num_vec(); 00211 return result; 00212 } 00213 00218 inline bool delete_feature_obj() 00219 { 00220 CDotFeatures* f=feature_list->delete_element(); 00221 if (f) 00222 { 00223 SG_UNREF(f); 00224 update_dim_feature_space_and_num_vec(); 00225 return true; 00226 } 00227 else 00228 return false; 00229 } 00230 00235 inline int32_t get_num_feature_obj() 00236 { 00237 return feature_list->get_num_elements(); 00238 } 00239 00245 virtual void get_subfeature_weights(float64_t** weights, int32_t* num_weights); 00246 00252 virtual void set_subfeature_weights( 00253 float64_t* weights, int32_t num_weights); 00254 00256 inline virtual const char* get_name() const { return "CombinedDotFeatures"; } 00257 00258 protected: 00260 void update_dim_feature_space_and_num_vec(); 00261 00262 protected: 00264 CList<CDotFeatures*>* feature_list; 00265 00267 int32_t num_vectors; 00269 int32_t num_dimensions; 00270 }; 00271 #endif // _DOTFEATURES_H___