bt_coef: Back-Transformation of Estimated Coefficients.

In VFP: Variance Function Program

Back-Transformation of Estimated Coefficients.

Description

This function performs back-transformation from re-parameterized forms in the 'VFP'-package into the original form.

Usage

bt_coef(object, K = NULL, signJ = NULL, model = NULL, ...)

Arguments

object	(object) of class 'gnm' representing a fitted model in re-parameterized form
K	(numeric) constant value 'K'
signJ	(integer) either 1 or -1
model	(integer) specifying which model shall be back-transformed
...	additional parameters

Details

In the 'VFP' package models are re-parameterized to have better control over the constraint solution-space, i.e. only models may be fitted generating non-negative fitted values. This function is intended to be for internal use only.

Value

(numeric) vector of coefficients in original parameterized form

Author(s)

Andre Schuetzenmeister [e-mail] Florian Dufey [e-mail]

VFP documentation built on April 13, 2025, 5:12 p.m.