SVMOcas.h
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00012 #ifndef _SVMOCAS_H___
00013 #define _SVMOCAS_H___
00014
00015 #include "lib/common.h"
00016 #include "classifier/LinearClassifier.h"
00017 #include "features/DotFeatures.h"
00018 #include "features/Labels.h"
00019
00020 namespace shogun
00021 {
00022 enum E_SVM_TYPE
00023 {
00024 SVM_OCAS = 0,
00025 SVM_BMRM = 1
00026 };
00027
00029 class CSVMOcas : public CLinearClassifier
00030 {
00031 public:
00036 CSVMOcas(E_SVM_TYPE type);
00037
00044 CSVMOcas(
00045 float64_t C, CDotFeatures* traindat,
00046 CLabels* trainlab);
00047 virtual ~CSVMOcas();
00048
00053 virtual inline EClassifierType get_classifier_type() { return CT_SVMOCAS; }
00054
00063 virtual bool train(CFeatures* data=NULL);
00064
00070 inline void set_C(float64_t c1, float64_t c2) { C1=c1; C2=c2; }
00071
00076 inline float64_t get_C1() { return C1; }
00077
00082 inline float64_t get_C2() { return C2; }
00083
00088 inline void set_epsilon(float64_t eps) { epsilon=eps; }
00089
00094 inline float64_t get_epsilon() { return epsilon; }
00095
00100 inline void set_bias_enabled(bool enable_bias) { use_bias=enable_bias; }
00101
00106 inline bool get_bias_enabled() { return use_bias; }
00107
00112 inline void set_bufsize(int32_t sz) { bufsize=sz; }
00113
00118 inline int32_t get_bufsize() { return bufsize; }
00119
00120 protected:
00129 static void compute_W(
00130 float64_t *sq_norm_W, float64_t *dp_WoldW, float64_t *alpha,
00131 uint32_t nSel, void* ptr);
00132
00139 static float64_t update_W(float64_t t, void* ptr );
00140
00149 static void add_new_cut(
00150 float64_t *new_col_H, uint32_t *new_cut, uint32_t cut_length,
00151 uint32_t nSel, void* ptr );
00152
00158 static void compute_output( float64_t *output, void* ptr );
00159
00166 static void sort( float64_t* vals, uint32_t* idx, uint32_t size);
00167
00169 inline virtual const char* get_name() const { return "SVMOcas"; }
00170
00171 protected:
00173 bool use_bias;
00175 int32_t bufsize;
00177 float64_t C1;
00179 float64_t C2;
00181 float64_t epsilon;
00183 E_SVM_TYPE method;
00184
00186 float64_t* old_w;
00188 float64_t old_bias;
00190 float64_t* tmp_a_buf;
00192 float64_t* lab;
00193
00196 float64_t** cp_value;
00198 uint32_t** cp_index;
00200 uint32_t* cp_nz_dims;
00202 float64_t* cp_bias;
00203 };
00204 }
00205 #endif