A numeric vector. Model parameter values

A numeric. ith dose level for a given design

A numeric. last dose level for a given design

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

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

inv1

numeric. The number of model paraemters

order

This function computes each element of the vector function DD_weight_1 which is the first derivative of the Ds-optimality criterion with respect to the model parameters.

Obtain and evaluate various optimal designs for the 3, 4, and 5-parameter logistic models. The optimal designs are obtained based on the numerical algorithm in Hyun, Wong, Yang (2018) <doi:10.18637/jss.v083.i05>.

d11: Computing each element of the function DD_weight_1

Description

Usage

Arguments