search for: marquadt

....g. use Nelder Mead. In particular, I'd be interested where this is done where the methods of the plinear algorithm are also used (the initial step using the projection matrix). If these don't exist why is the Gauss-Newton algorithm considered sufficient? Also can I implement the Levenberg Marquadt algorithm in nls? Regards Liam

Hi R users: I want to know if any of you had used Stata or Statgraphics. What are the advantages and disadvantages with respect to R on the following aspects? 1. Statistical functions or options for advanced experimental design (fractional, mixed models, greco-latin squares, split-plot, etc). 2. Bayesian approach to experimental design. 3. Experimental design planing options. 4. Manuals