Is there a question or point to your message or did you simply feel the urge to inform the entire R-help list of the things that you consider? Josh
On Fri, Sep 30, 2011 at 11:12 PM, yehengxin <xye78 at hotmail.com> wrote:
I used to consider using R and "Optim" to replace my commercial packages: Gauss and Matlab. ?But it turns out that "Optim" does not converge completely. ?The same data for Gauss and Matlab are converged very well. ?I see that there are too many packages based on "optim" and really doubt if they can be trusted! -- View this message in context: http://r.789695.n4.nabble.com/Poor-performance-of-Optim-tp3862229p3862229.html Sent from the R help mailing list archive at Nabble.com.
______________________________________________ R-help at 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.
Joshua Wiley Ph.D. Student, Health Psychology Programmer Analyst II, ATS Statistical Consulting Group University of California, Los Angeles https://joshuawiley.com/