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00010 #ifndef _BINNED_DOTFEATURES_H___
00011 #define _BINNED_DOTFEATURES_H___
00012
00013 #include <shogun/lib/common.h>
00014 #include <shogun/features/DotFeatures.h>
00015 #include <shogun/features/DenseFeatures.h>
00016
00017 namespace shogun
00018 {
00019 template <class T> class CDenseFeatures;
00020
00041 class CBinnedDotFeatures : public CDotFeatures
00042 {
00043 public:
00048 CBinnedDotFeatures(int32_t size=0);
00049
00051 CBinnedDotFeatures(const CBinnedDotFeatures & orig);
00052
00059 CBinnedDotFeatures(CDenseFeatures<float64_t>* sf, SGMatrix<float64_t> bins);
00060
00061 virtual ~CBinnedDotFeatures();
00062
00070 virtual int32_t get_dim_feature_space() const;
00071
00079 virtual float64_t dot(int32_t vec_idx1, CDotFeatures* df, int32_t vec_idx2);
00080
00087 virtual float64_t dense_dot(int32_t vec_idx1, const float64_t* vec2, int32_t vec2_len);
00088
00097 virtual void add_to_dense_vec(float64_t alpha, int32_t vec_idx1, float64_t* vec2, int32_t vec2_len, bool abs_val=false);
00098
00106 virtual int32_t get_nnz_features_for_vector(int32_t num);
00107
00117 virtual void* get_feature_iterator(int32_t vector_index);
00118
00129 virtual bool get_next_feature(int32_t& index, float64_t& value, void* iterator);
00130
00136 virtual void free_feature_iterator(void* iterator);
00137
00138
00143 bool get_fill();
00144
00149 void set_fill(bool fill);
00150
00155 bool get_norm_one();
00156
00161 void set_norm_one(bool norm_one);
00162
00167 void set_simple_features(CDenseFeatures<float64_t>* features);
00168
00173 CDenseFeatures<float64_t>* get_simple_features();
00174
00184 void set_bins(SGMatrix<float64_t> bins);
00185
00190 SGMatrix<float64_t> get_bins();
00191
00195 virtual const char* get_name() const;
00196
00201 virtual CFeatures* duplicate() const;
00202
00207 virtual EFeatureType get_feature_type() const;
00208
00213 virtual EFeatureClass get_feature_class() const;
00214
00219 virtual int32_t get_num_vectors() const;
00220
00225 virtual int32_t get_size() const;
00226
00227 private:
00228 void init();
00229
00234 void assert_shape(int32_t vec2_len);
00235
00236 protected:
00238 CDenseFeatures<float64_t>* m_features;
00239
00241 SGMatrix<float64_t> m_bins;
00242
00244 bool m_fill;
00245
00247 bool m_norm_one;
00248 };
00249 }
00250 #endif // _BINNED_DOTFEATURES_H___
00251