On Fri, Mar 18, 2011 at 11:27:58AM -0700, LC-Bea wrote: > Hello! > > I´m doing this: > > A<-optim(vv,pen.wlsv,method="BFGS") > B<-optim(vv,pen.wlsv,method="Nelder-Mead") > > the function is the same > and the initial values too > > the estimate values are different, very different, at the first decimal > > is there an error?
Not necessarily. > or maybe its because of my data, or funtion to minimize? > i thought that the values must be almost equal, that the big difference > between the two algoritms is in the time that they use to find a solution If the function has several local minima, then different methods may found different ones. Can you send more detail about the minimized function? Petr Savicky. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
