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/**
* @file gensvm_kernel.h
* @author Gertjan van den Burg
* @date January, 2014
* @brief Header file for kernel functionality
*
* @details
* Contains function declarations for computing the kernel matrix
* in nonlinear MSVMGen. Additional kernel functions should be
* included here and in gensvm_kernel.c
*
*/
#ifndef GENSVM_KERNEL_H
#define GENSVM_KERNEL_H
// forward declarations
struct GenData;
struct GenModel;
// function declarations
void gensvm_kernel_preprocess(struct GenModel *model, struct GenData *data);
void gensvm_kernel_postprocess(struct GenModel *model,
struct GenData *traindata, struct GenData *testdata);
void gensvm_make_kernel(struct GenModel *model, struct GenData *data,
double *K);
long gensvm_make_eigen(double *K, long n, double **P, double **Sigma);
void gensvm_make_crosskernel(struct GenModel *model,
struct GenData *data_train, struct GenData *data_test,
double **K2);
void gensvm_make_trainfactor(struct GenData *data, double *P, double *Sigma,
long r);
void gensvm_make_testfactor(struct GenData *testdata,
struct GenData *traindata, double *K2);
double gensvm_dot_rbf(double *x1, double *x2, double *kernelparam, long n);
double gensvm_dot_poly(double *x1, double *x2, double *kernelparam, long n);
double gensvm_dot_sigmoid(double *x1, double *x2, double *kernelparam, long n);
#endif
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