On Wed, 14 Nov 2007, Mike Preuss wrote: > Dear R developers, > > concerning the stats package, > is there a way to access more of the 'internal' > parameters of the optim() methods (e.g. BFGS), > without me rewriting optim code and using it as > an internal, patched stats package? It may not > sound useful to you, but for me it is important > to be able to change the parameters as I want > to apply parameter tuning methods. Currently, > I'm doing so only on the very limited parameter > set available via the control parameter, but > e.g. for the CG and BFGS methods, this is practically > empty. But there are internally set parameters > (e.g. for the line searches), just they are not > accessible from the outside.
Why don't you read the C code to find out? You probably also need to read the reference to understand the choices made, and why the author didn't feel it useful to make them accessible. -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
