D_weight function

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

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.

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