You may also be interested in this, a purely J implementation of the Levenberg-Marquardt nonlinear least-squares optimization: http://code.jsoftware.com/wiki/NYCJUG/2010-11-09/Levenberg-MarquardtAlgorithm .
On Tue, Jun 27, 2017 at 7:57 PM, Bill <bbill....@gmail.com> wrote: > Can you get the C source and compile it for 64 bit and other platforms and > then release it as a j805 addons? > > Sent from my iPhone > > On 28 Jun, 2017, at 12:44 AM, David Mitchell <davidmitch...@att.net> > wrote: > > > Jon, that would probably be the simplest way to get the addons. > > > > All the best, > > David > > > > On 6/27/2017 11:50, 'Jon Hough' via Programming wrote: > >> Thanks David. I will take a look. Do I need to install j602 for this? > >> Regards, > >> Jon > >> On Jun 27, 2017, 23:59, at 23:59, David Mitchell <davidmitch...@att.net> > wrote: > >>> There should be a 32 bit version in \addons\math\lbfgs for j602. I > >>> copied the > >>> directory and contents to \addons\math\lbfgs for j805 and it seemed to > >>> work ok, > >>> after removing: > >>> > >>> script_z_ '~system\main\dll.ijs' > >>> > >>> Let me know if this works for you. > >>> > >>> All the best, > >>> David Mitchell > >>> > >>> On 6/27/2017 10:38, 'Jon Hough' via Programming wrote: > >>>> I was wondering whether the math addons contained an implementation > >>> of the LBFGS algorithm. I couldn't find anything, except this cryptic > >>>> entry in the wiki: > >>>> http://code.jsoftware.com/wiki/Addons/math/lbfgs > >>>> > >>>> Looking through the math addon files I couldn't find anything > >>> resembling this. > >>>> Does such an addon exist anywhere? > >>>> > >>>> Thanks, > >>>> Jon > >>> ---------------------------------------------------------------------- > >>>> For information about J forums see > >>> http://www.jsoftware.com/forums.htm > >>> ---------------------------------------------------------------------- > >>> For information about J forums see http://www.jsoftware.com/forums.htm > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Devon McCormick, CFA Quantitative Consultant ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
