I also have doubts this can be formulated correctly as a linear assignment
problem. You may want to check the results with a small example.

Erwin

----------------------------------------------------------------
Erwin Kalvelagen
Amsterdam Optimization Modeling Group
erwin@amsterdamoptimization.com
http://amsterdamoptimization.com
----------------------------------------------------------------


On Sat, Jan 16, 2010 at 9:59 AM, Ravi Varadhan <rvaradhan@jhmi.edu> wrote:

>
> Thanks, Erwin, for pointing out this mistake.
>
> Here is the correct function for Frobenius norm.
>
> Klaus - Just replace the old `dist' with the following one.
>
> dist <- function(A, B) {
>  # Frobenius norm of A - B
>  n <- nrow(A)
>  sqrt(sum((B - A)^2))
>  }
>
> Ravi.
>
> ____________________________________________________________________
>
> Ravi Varadhan, Ph.D.
> Assistant Professor,
> Division of Geriatric Medicine and Gerontology
> School of Medicine
> Johns Hopkins University
>
> Ph. (410) 502-2619
> email: rvaradhan@jhmi.edu
>
>
> ----- Original Message -----
> From: Erwin Kalvelagen <erwin.kalvelagen@gmail.com>
> Date: Saturday, January 16, 2010 2:35 am
> Subject: Re: [R] optimization problem
> To: r-help@stat.math.ethz.ch
>
>
> > Ravi Varadhan <rvaradhan <at> jhmi.edu> writes:
> > > dist <- function(A, B) {
> > > # Frobenius norm of A - B
> > >     n <- nrow(A)
> > >     sum(abs(B - A))
> > > }
> > >
> >
> > See  for a definition of the
> > Frobenius norm.
> >
> >
> > Erwin
> >
> > ----------------------------------------------------------------
> > Erwin Kalvelagen
> > Amsterdam Optimization Modeling Group
> > erwin@amsterdamoptimization.com
> >
> >
> > ______________________________________________
> > R-help@r-project.org mailing list
> >
> > PLEASE do read the posting guide
> > and provide commented, minimal, self-contained, reproducible code.
>

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