Yes, looking for negative slacks is the thing to do. These may be numbers
pretty close to zero, so be sure option display_eps is set to 0 and options
solution_precision and solution_round are ''.
Bob Fourer
4er@...
> -----Original Message-----
> From:
ampl@... [mailto:
ampl@...]
> On Behalf Of Amir [
amirmm11@...]
> Sent: Thursday, October 22, 2009 5:35 PM
> To: AMPL Modeling Language
> Subject: [AMPL 2904] Optimal with unscaled infeasibilities
>
> Hi,
>
> After solving a MIP problem using AMPL/CPLEX, I got this message
>
> "Status recovering solution: optimal with unscaled infeasibilities"
>
> I know I have to investigate the coefficient matrix for poorly scaled
> rows and columns. i believe I can do that by checking constraint and
> variable slacks for violations (negative slacks), is this the best
> way? if not, I'd appreciate if you tell me the correct way.
>
> Regards
> Amir
>
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