qi A
2013-Mar-31 23:21 UTC
[R] DUD (Does not Use Derivatives) for nonlinear regression in R?
Hi, All SAS has DUD (Does not Use Derivatives)/Secant Method for nonlinear regression, does R offer this option for nonlinear regression? I have read the helpfile for nls() and could not find such option, any suggestion? Thanks, Derek [[alternative HTML version deleted]]
Paul Johnson
2013-Apr-02 11:59 UTC
[R] DUD (Does not Use Derivatives) for nonlinear regression in R?
On Apr 1, 2013 1:10 AM, "qi A" <send2aqi@gmail.com> wrote:> > Hi, All > > SAS has DUD (Does not Use Derivatives)/Secant Method for nonlinear > regression, does R offer this option for nonlinear regression? > > I have read the helpfile for nls() and could not find such option, any > suggestion? >nelder-mead is default algorithm in optim. It does not use derivatives. dud is from same generation, but John Nash recommended N-M method. Pj> Thanks, > > Derek > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guidehttp://www.R-project.org/posting-guide.html> and provide commented, minimal, self-contained, reproducible code.[[alternative HTML version deleted]]