R-alpha: nlm and gradients

Peter Dalgaard BSA p.dalgaard@biostat.ku.dk
21 Nov 1997 17:34:20 +0100

Douglas Bates <bates@stat.wisc.edu> writes:

> Can anyone tell me if the current version of nlm uses only function
> values or if it can use gradients and Hessians when they are
> available?  I would like to get an idea of how difficult it would be
> to port the development versions of our linear mixed-effects code.

I'd say that this is so important that you should just tell us what
you want it to do and we'll make it do so.

(Above statement being asymptotically valid for large values of

   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907
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