[R] arg min ???

[Petr PIKAL]

Hi

r-help-bounces at r-project.org napsal dne 25.11.2009 16:50:49:

> 
> This is nice, but i have to define vector of possible theta, this is not 
what
> i want to do.
> I have vector of unknow parameters theta. I have som estimate of theta, 
but
> i want to do better estimate of them, using some criterion function. 
> I mean it is clasical argmin f(x_1,x_2,...x_n)  to fit vector
> (x_1,x_2...,x_n)` 

I am not sure what you mean by argmin, but maybe you could look at ?optim

Regards
Petr

> 
> 
> David Winsemius wrote:
> > 
> > 
> > On Nov 25, 2009, at 9:15 AM, Peterko wrote:
> > 
> >>
> >> Is there function what aproximate vector of parameters some function 
> >> to
> >> minimum ?
> >>
> >> tet={tet1,tet2} .... i have they starting value
> >>
> >> and i want to find the tet what minimalizing some function of tet ?
> > 
> > ?which.min
> > 
> > Perhaps:
> > 
> >   which.min( fn(tet) )
> > 
> >>
> >> thanks
> >> -- 
> >> View this message in context:
> >> http://old.nabble.com/arg-min-----tp26513358p26513358.html
> >> Sent from the R help mailing list archive at Nabble.com.
> >>
> >> ______________________________________________
> >> R-help at r-project.org mailing list
> >> https://stat.ethz.ch/mailman/listinfo/r-help
> >> PLEASE do read the posting guide
> >> http://www.R-project.org/posting-guide.html
> >> and provide commented, minimal, self-contained, reproducible code.
> > 
> > David Winsemius, MD
> > Heritage Laboratories
> > West Hartford, CT
> > 
> > ______________________________________________
> > R-help at r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> > http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> > 
> > 
> 
> -- 
> View this message in context: 
http://old.nabble.com/arg-min-----tp26513358p26515110.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide 
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.