VFP (version 1.4.3)

bt_coef: 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, ...)

Value

(numeric) vector of coefficients in original parameterized form

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

Author

Andre Schuetzenmeister Florian Dufey

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.