[Rd] stats package, optim and other optimization methods: more parameters?

From: Mike Preuss <mike.preuss_at_cs.uni-dortmund.de>
Date: Wed, 14 Nov 2007 22:47:25 +0100


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.

Best wishes and many thanks,

Mike Preuss



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