D_weight {Opt5PL}

One iteration to run Newton Raphson to get D-optimal weights

Description

This is a sub-part of running Newton Raphon method to search D-optimal weights for the given design points. This is function probvides the obtained D-optimal weights after one iteration of Newton Raphson method.

Usage

D_weight(W, T, X, d, q)

Arguments

W

A numeric vector. The first K-1 weights for a given design

T

A numeric vector. Model parameter values

X

A numeric vector. K dose levels for a given design

d

Numeric. Step adjustment

q

A numeric vector. User select weights defined in the function RDOPT