Mort2Dsmooth_update: Update a 2D Penalized-Poisson Iteration

In MortalitySmooth: Smoothing and Forecasting Poisson Counts with P-Splines

Description

This is an internal function of package MortalitySmooth which update coefficients for penalized B-splines for two given smoothing parameters within the function Mort2Dsmooth.

Usage

Mort2Dsmooth_update(x, y, Z, offset, psi2, wei,
                    Bx, By, nbx, nby, RTBx, RTBy, P, a)

Arguments

x	vector for the abscissa of data.
y	vector for the ordinate of data.
Z	matrix of counts response.
offset	matrix with an a priori known component (optional).
wei	an optional matrix of weights to be used in the fitting process.
psi2	overdispersion parameter.
Bx	B-splines basis for the x-axis.
By	B-splines basis for the y-axis.
nbx	number of B-splines for the x-axis.
nby	number of B-splines for the y-axis.
RTBx	tensors product of B-splines basis for the x-axis.
RTBy	tensors product of B-splines basis for the y-axis.
P	penalty factor.
a	coefficients (in a matrix).

Details

Internal function used for updating a matrix coefficients of the B-splines in 2D Poisson penalized B-splines model.

Value

A matrix of updated coefficients.

Author(s)

Carlo G Camarda

See Also

Mort2Dsmooth.

MortalitySmooth documentation built on May 2, 2019, 6:07 a.m.