ds11 function

Sensitivity function of Ds-optimality criterion

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

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