This is a sub-part of running Newton Raphon method to search Ds-optimal weights for the given design points. This is function probvides the obtained Ds-optimal weights after one iteration of Newton Raphson method.
DD_weight(W, T, X, d, I4, I5, order)
A numeric vector. The first K-1 weights for a given design
A numeric vector. Model parameter values
A numeric vector. K dose levels for a given design
Numeric. Step adjustment
A numeric matrix. Information matrix for the 4PL model
A numeric matrix. Information matrix for the 5PL model
Numeric. The number of model paraemters