Regression

Approximates a discrete function using least squares polynomial fitting.

double

Discrete_once (int N, double *x, double *y, int degree, double a)

Approximates an arbitrary function using Forsythe orthogonal polynomials.

double

Forsythe_once (int n, double *x, double *y, int degree, double a)

Calculates the linear regression parameters and evaluates the regression line at arbitrary abscissas

double

Linear_once (int n, double *x, double *y, double a)

Evaluates the logistic regression curve built from a given set of points.

double

Logistic_once (int n, double *x, double *y, double a)

Approximates an arbitrary function using orthogonal polynomials.

double

Orthogonal_once (int n, double *x, double *y, int degree, double a)

Approximates an arbitrary function using parabolic least squares fitting.

double

Parabolic_once (int n, double *x, double *y, double a)

Approximates a given function using the Stiefel-Remes method.

double

Stiefel_once (int n, double *x, double *y, int degree, double a)

univariate regression, polynomial regression, orthogonal polynomials, nonlinear