Hi Steven Which optimisation algorithms in maxLik work better under R-3.0.3 than under the current version of R?
/Arne On Thu, 8 Oct 2020 at 21:05, Steven Yen <st...@ntu.edu.tw> wrote: > > Hmm. You raised an interesting point. Actually I am not having problems with > aod per se—-it is just a supporting package I need while using old R. The > essential package I need, maxLik, simply works better under R-3.0.3, for > reason I do not understand—specifically the numerical gradients of the > likelihood function are not evaluated as accurately in newer versions of R in > my experience, which is why I continue to use R-3.0.3. Because I use this > older version of R, naturally I need to install other supporting packages > such as aod and AER. > Certainly, I will install the zip file of the older version of maxLik to the > latest R and see what happens. Thank you. > > I will install the new maxLik in old R, and old maxLik in new R, and see what > happens. > > Sent from my iPhone > Beware: My autocorrect is crazy > > > On Oct 9, 2020, at 2:17 AM, Richard M. Heiberger <r...@temple.edu> wrote: > > > > I wonder if you are perhaps trying to solve the wrong problem. > > > > If you like what the older version of the aod package does, but not > > the current version, > > then I think the solution is to propose an option to the aod > > maintainer that would restore your > > preferred algorithm into the current version, and then use the current R. > > > > A less good, but possibly workable, option is to compile the old > > version of aod into the current R. > > > >> On Thu, Oct 8, 2020 at 1:45 PM Jeff Newmiller <jdnew...@dcn.davis.ca.us> > >> wrote: > >> > >> All support on this list is voluntary, and support for old versions of R > >> is not even necessarily on-topic here which is why you keep getting nudged > >> to upgrade. Your "need" for support for an old version is definitely not > >> "our" problem, so I suggest you start looking for a consultant if this > >> issue is that important to you. Such is the nature of volunteer-developed > >> open source software... so support your local experts. > >> > >>> On October 8, 2020 10:22:54 AM PDT, Steven Yen <st...@ntu.edu.tw> wrote: > >>> Thanks for the help. I have a reason to continue with R-3.0.3. I used > >>> maxLik to estimate econometric models and some of them are better > >>> handled with R-3.0.3 (but not later)----a sad reality I do not like. > >>> > >>> Here is what I did. I downloaded > >>> > >>> https://cran-archive.r-project.org/bin/windows/contrib/3.0/aod_1.3.zip > >>> > >>> and installed the zip file, which worked in both RStudio and R (without > >>> > >>> RStudio). > >>> > >>> In RStudio, I go Tools -> Install packages -> Install from -> (Choose > >>> zip) -> (Browse to the zip file) > >>> > >>> IN R, I go Packages -> Install packages from local file(s) -> (Browse > >>> to > >>> the zip file)... > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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. -- Arne Henningsen http://www.arne-henningsen.name ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
