[SCIP] quadratic constraints

[Felipe Serrano]

Hi Ahmed

SCIP does indeed recognize when this happens and treats those constraints
as linear.
Is this not happening in some of your instances?
If this is the case, could you please send it to me?

Best,
Felipe

On Thu, Feb 4, 2016 at 8:09 PM, Ahmed Ibrahim <Ahmed.Ibrahim at umanitoba.ca>
wrote:

> Hi All,
>
> I'm solving different instances of MIQCPs in which the coefficients of
> some of the quadratic terms are randomly generated for each instance. There
> is a good possibility that these coefficients are all zero in some
> instances for some of the constraints which makes these linear instead of
> quadratic. I was wondering if there is a way to make the solver treat these
> constraints as linear instead of quadratic. In other words, if the matrix
> of the quadratic component of a constraint is all zeros, how can we make
> the solver classify it (maybe in the presolving stage) as linear?
>
> Regards,
> Ahmeded
>
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