ibr (version 1.3.1)

betaS1: Coefficients for iterative bias reduction method.

Description

The function evaluates the smoothing matrix H, the matrices Q and S and their associated coefficients c and s. This function is not intended to be used directly.

Usage

betaS1(n,U,tUy,eigenvaluesS1,ddlmini,k,lambda,Sgu,Qgu,index0)

Value

Returns a list containing of coefficients for the null space dgub and the semi-kernel cgub

Details

See the reference for detailed explanation of Q (the semi kernel or radial basis) and S (the polynomial null space). Both matrices are computed using fields.

References

C. Gu (2002) Smoothing spline anova models. New York: Springer-Verlag.

See Also

ibr