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Re: [Help-glpk] "0 or greater than" condition


From: Andrew Makhorin
Subject: Re: [Help-glpk] "0 or greater than" condition
Date: Sat, 22 Mar 2008 20:05:20 +0300

> Probably correct formulation should be the following:
> 
> s.t. condition1{f in FOO, b in BAR}:
>         sum{a in BAZ} x[f,b,a] >= 5 * z;
> 
> s.t. condition2{f in FOO, b in BAR}:
>         sum{a in BAZ} x[f,b,a] <= u[f,b,a] * z;
> 
> where u[f,b,a] is an upper bound of x[f,b,a].

The second constraint should be the following:

s.t. condition2{f in FOO, b in BAR}:
        sum{a in BAZ} x[f,b,a] <= u[f,b] * z;

where u[f,b] is an upper bound of sum{a in BAZ} x[f,b,a].







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