ds11 {Opt5PL}

Sensitivity function of Ds-optimality criterion

Description

This evaluates the sensitivity function of the Ds-optimality criterion at the given value of x.

Usage

ds11(T, x, inv, inv1, order)

Arguments

T

A numeric vector. Model parameter values for the 5PL model

x

A numeric. A given dose level

inv

A numeric matrix. Inverse information matrix for the 5PL model

inv1

A numeric matrix. Inverse information matrix for the 4PL model

order

numeric. The number of model paraemters