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00011 #include <shogun/lib/config.h>
00012
00013 #ifndef ANOVAKERNEL_H_
00014 #define ANOVAKERNEL_H_
00015
00016 #include <shogun/lib/common.h>
00017 #include <shogun/kernel/DotKernel.h>
00018 #include <shogun/features/Features.h>
00019 #include <shogun/features/DenseFeatures.h>
00020
00021 namespace shogun
00022 {
00023
00024 class CDistance;
00025
00037 class CANOVAKernel: public CDotKernel
00038 {
00039 public:
00041 CANOVAKernel();
00042
00047 CANOVAKernel(int32_t cache, int32_t d);
00048
00055 CANOVAKernel(
00056 CDenseFeatures<float64_t>* l, CDenseFeatures<float64_t>* r, int32_t d, int32_t cache);
00057
00058 virtual ~CANOVAKernel();
00059
00065 virtual bool init(CFeatures* l, CFeatures* r);
00066
00070 virtual EKernelType get_kernel_type() { return K_ANOVA; }
00071
00075 virtual EFeatureType get_feature_type() { return F_DREAL; }
00076
00080 virtual EFeatureClass get_feature_class() { return C_DENSE; }
00081
00085 virtual const char* get_name() const { return "ANOVAKernel"; }
00086
00090 inline int32_t get_cardinality() { return this->cardinality; }
00091
00095 inline void set_cardinality(int32_t value) { this->cardinality = value; }
00096
00102 float64_t compute_rec1(int32_t idx_a, int32_t idx_b);
00108 float64_t compute_rec2(int32_t idx_a, int32_t idx_b);
00109 protected:
00110
00118 virtual float64_t compute(int32_t idx_a, int32_t idx_b);
00119
00121 void init();
00122
00124 void allocate_arrays();
00125
00127 virtual void cleanup();
00128
00130 void register_params();
00131
00140 virtual void load_serializable_post() throw (ShogunException);
00141
00142 private:
00143 float64_t compute_recursive1(float64_t* avec, float64_t* bvec, int32_t len);
00144 float64_t compute_recursive2(float64_t* avec, float64_t* bvec, int32_t len);
00145
00146 protected:
00148 int32_t cardinality;
00149
00151 float64_t* DP;
00153 int32_t DP_len;
00154
00156 float64_t* KD;
00158 float64_t* KS;
00160 float64_t* vec_pow;
00161 };
00162 }
00163
00164 #endif