/************************************************************************//*                                                                      *//*   kernel.h                                                           *//*                                                                      *//*   User defined kernel function. Feel free to plug in your own.       *//*                                                                      *//*   Copyright: Thorsten Joachims                                       *//*   Date: 16.12.97                                                     *//*                                                                      *//************************************************************************//* KERNEL_PARM is defined in svm_common.h The field 'custom' is reserved for *//* parameters of the user defined kernel. You can also access and use *//* the parameters of the other kernels. Just replace the line              return((double)(1.0));    with your own kernel. */  /* Example: The following computes the polynomial kernel. sprod_ss              computes the inner product between two sparse vectors.       return((CFLOAT)pow(kernel_parm->coef_lin*sprod_ss(a->words,b->words)             +kernel_parm->coef_const,(double)kernel_parm->poly_degree));   */double custom_kernel(KERNEL_PARM *kernel_parm, DOC *a, DOC *b)      /* plug in you favorite kernel */                          {  return((double)(1.0)); }