[R] Problem on minima

[Liaw, Andy]

... and optim() has simulated annealing.

Andy

> -----Original Message-----
> From: Kenneth Cabrera [mailto:krcabrer at epm.net.co]
> Sent: Sunday, September 29, 2002 8:09 AM
> To: E. D. Isaia
> Cc: r-help at stat.math.ethz.ch
> Subject: Re: [R] Problem on minima
> 
> 
> 
> Have you think in use genetic algoritms? (gafit package)
> 
> E. D. Isaia wrote:
> 
> >Dear List, I wonder if there is a package that may help me 
> in finding mimina of a specified function in 2 or more real variables.
> >Until now I used the optim() function and/or the nlr() one, 
> passing the function g() of interest and the initial guess 
> for the parameters to be optimized over, but it is rather 
> tricky as in my case the function g() may have one absolute 
> minimum and several relative minima which I'm interested in.
> >
> >-- 
> >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >~ Ennio D. Isaia
> >~ Dep. of Statistics & Mathematics, University of Torino
> >~ Piazza Arbarello, 8 - 10128 Torino (Italy)
> >~ Phone: +39 011 670 62 51 ~~ Fax: +39 011 670 62 39
> >~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >  
> >
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> -- 
> Kenneth Roy Cabrera Torres
> Celular +57 (315) 405 9339
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