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src/liblinear/linear.cpp  view on Meta::CPAN

// x, y, Cp, Cn
// eps is the stopping tolerance
//
// solution will be put in w
//
// this function returns the number of iterations
//
// See Yuan et al. (2010) and appendix of LIBLINEAR paper, Fan et al. (2008)
//
// To not regularize the bias (i.e., regularize_bias = 0), a constant feature = 1
// must have been added to the original data. (see -B and -R option)

#undef GETI
#define GETI(i) (y[i]+1)
// To support weights for instances, use GETI(i) (i)

static int solve_l1r_l2_svc(const problem *prob_col, const parameter* param, double *w, double Cp, double Cn, double eps)
{
	int l = prob_col->l;
	int w_size = prob_col->n;
	int regularize_bias = param->regularize_bias;

src/liblinear/linear.cpp  view on Meta::CPAN

// x, y, Cp, Cn
// eps is the stopping tolerance
//
// solution will be put in w
//
// this function returns the number of iterations
//
// See Yuan et al. (2011) and appendix of LIBLINEAR paper, Fan et al. (2008)
//
// To not regularize the bias (i.e., regularize_bias = 0), a constant feature = 1
// must have been added to the original data. (see -B and -R option)

#undef GETI
#define GETI(i) (y[i]+1)
// To support weights for instances, use GETI(i) (i)

static int solve_l1r_lr(const problem *prob_col, const parameter *param, double *w, double Cp, double Cn, double eps)
{
	int l = prob_col->l;
	int w_size = prob_col->n;
	int regularize_bias = param->regularize_bias;

src/liblinear/linear.cpp  view on Meta::CPAN

		}
	}
	for(i=0; i<n; i++)
		x_space[col_ptr[i]].index = -1;

	*x_space_ret = x_space;

	delete [] col_ptr;
}

// label: label name, start: begin of each class, count: #data of classes, perm: indices to the original data
// perm, length l, must be allocated before calling this subroutine
static void group_classes(const problem *prob, int *nr_class_ret, int **label_ret, int **start_ret, int **count_ret, int *perm)
{
	int l = prob->l;
	int max_nr_class = 16;
	int nr_class = 0;
	int *label = Malloc(int,max_nr_class);
	int *count = Malloc(int,max_nr_class);
	int *data_label = Malloc(int,l);
	int i;