hex.genmodel.algos.gam

Class GamUtilsISplines

java.lang.Object

hex.genmodel.algos.gam.GamUtilsISplines

public class GamUtilsISplines
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
GamUtilsISplines()

Method Summary

Modifier and Type	Method and Description
static double[]	addCoeffs(double[] leftCoef, double[] riteCoef) Perform summation of coefficients from the left and rite splines with lower order.
static void	combineParentCoef(double[] parentCoeff, double parentConst, double[][] currCoeff) Extract coefficients for a node as in equation 5, 11 or 16 by combining the constants, additional polynomials with polynomials from nodes of lower orders.
static double[]	extractKnots(int index, int order, double[] knots) This method is used to extract the knots over which a basis function is supposed to be non-zero.
static double[]	fillKnots(double[] knots, int m)
static double[]	polynomialProduct(double[] coeff1, double[] coeff2) This method performs the multiplication of two polynomials where the polynomials are given as a double array.
static void	sumCoeffs(double[][] leftCoeffs, double[][] riteCoeffs, double[][] currCoeffs) Perform sum of two polynomials resulting in a double[] representing the result of the summation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GamUtilsISplines

public GamUtilsISplines()

Method Detail

fillKnots

public static double[] fillKnots(double[] knots,
                                 int m)

extractKnots

public static double[] extractKnots(int index,
                                    int order,
                                    double[] knots)

This method is used to extract the knots over which a basis function is supposed to be non-zero.

polynomialProduct

public static double[] polynomialProduct(double[] coeff1,
                                         double[] coeff2)

This method performs the multiplication of two polynomials where the polynomials are given as a double array. This will result in another array which contains the multiplication of the two polynomials.

combineParentCoef

public static void combineParentCoef(double[] parentCoeff,
                                     double parentConst,
                                     double[][] currCoeff)

Extract coefficients for a node as in equation 5, 11 or 16 by combining the constants, additional polynomials with polynomials from nodes of lower orders.

sumCoeffs

public static void sumCoeffs(double[][] leftCoeffs,
                             double[][] riteCoeffs,
                             double[][] currCoeffs)

Perform sum of two polynomials resulting in a double[] representing the result of the summation.

addCoeffs

public static double[] addCoeffs(double[] leftCoef,
                                 double[] riteCoef)

Perform summation of coefficients from the left and rite splines with lower order.