[Scip] farkas pricing

[Alessia Violin]

Hello Martin,

thanks to your suggestion I went back on the calculations to solve the 
pricing and I saw I missed a minus in the farkas redcost... I was 
looking at those lines of code for a week! Well, now it works :-)

About the stabilization, it was desactivated for now, but I will put it 
back again, at least on the normal pricing where it was already working 
and improving the resolution quite a lot, and if possible in the farkas 
pricing as well.

Thanks again,

Alessia



On 05/17/2013 12:40 PM, Martin Bergner wrote:
> Hi Alessia,
>
> as you wrote about stabilization earlier: Are you stabilizing during
> Farkas pricing? If so, do you want that (or are sure that it works)?
> Maybe you could try to turn it off in this case.
>
> Another idea on some other error that I have done before: If you solve
> your pricing problem with a combinatorial algorithm, are you sure you're
> not somewhere implicitly assuming some objective value?
>
> Regards,
> Martin
>

-- 
Alessia Violin
Service Graphes et Optimisation Mathématique (G.O.M.)
Université Libre de Bruxelles
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