Hi, Is it possible to set this constraint ? SUM (Xi * Yj) <= 1 where Xi and Yj are variables in {0,1}. Thanks in advance, Pedro
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Hi,
That constraint would make the problem nonlinear (a bunch of products of
two variables). Hence, I really doubt you can do this in GLPK (where the
"L" stands for Linear).
However, the good news is that you might be able to reformulate your
constraint using some simple linearization technique.
> Is it possible to set this constraint ?
>
> SUM (Xi * Yj) <= 1
>
> where Xi and Yj are variables in {0,1}.
Your inequality can be written as follows:
sum zk <= 1
where zk are binary variables such that zk = xi * yj (or,
equivalently, zk = xi & yj). The latter constraints are still
non-l
> From: [EMAIL PROTECTED] [mailto:help-glpk-
> [EMAIL PROTECTED] On Behalf Of Andrew Makhorin
> Sent: Monday, November 21, 2005 3:07 AM
> To: Pedro Oguri
> Cc: help-glpk@gnu.org
> Subject: Re: [Help-glpk] Setting a constraint
>
> > Is it possible to set this constr
On Mon, 21 Nov 2005, Robert Fourer wrote:
>
> > From: [EMAIL PROTECTED] [mailto:help-glpk-
> > [EMAIL PROTECTED] On Behalf Of Andrew Makhorin
> > Sent: Monday, November 21, 2005 3:07 AM
> > To: Pedro Oguri
> > Cc: help-glpk@gnu.org
> > Subject: Re: [Help-glp
