[SCIP] best way to use scip with matlab?

[Hans Mittelmann]

NO, if the QCQPs are completely binary you do not need a global solver. Look at my benchmarks again.
While SCIP is publicly available it is not free for use by the public!!! Only as member of an academic
institution. No commercial use! But, if you are at an academic institution you can also get CPLEX.

> On Aug 9, 2017, at 7:25 AM, Vyacheslav Kungurtsev <vyacheslav.kungurtsev at fel.cvut.cz> wrote:
> 
> QCQPs. CPLEX for some reason can handle QCQPs with indefinite objective, but not constraint quadratics. So yes, I would need a global solver, however, I suppose there should be something specifically tailored to QCQPs, as opposed to a generic nonlinear IP solver. It seems like scip is the only one I've found so far publicly available for this
> 
> On Wed, Aug 9, 2017 at 3:52 PM, Hans Mittelmann <mittelma at asu.edu <mailto:mittelma at asu.edu>> wrote:
> Are you talking about QPs or QCPQs? CPLEX can handle non convex QPs and they do not even have 
> to be binary. If they are binary they can be linearized or convexified and other solvers can handle them
> as well. See my QPLIB benchmarks on http://plato.asu.edu/bench.html <http://plato.asu.edu/bench.html>
> However, if you have quadratic constraints you need a global solver.
> 
> Hans Mittelmann
> 
>> On Aug 9, 2017, at 3:33 AM, Vyacheslav Kungurtsev <vyacheslav.kungurtsev at fel.cvut.cz <mailto:vyacheslav.kungurtsev at fel.cvut.cz>> wrote:
>> 
>> Hello,
>> 
>> I am trying to find a solver (available via academic license at most) for nonconvex binary QPs. CPLEX requires the constraint quadratics to be positive semi-definite, so I stumbled on to SCIP after finding the OPTI toolbox. But the OPTI toolbox is apparently only available for Windows, so I figured directly installing scip to run in matlab should be possible, but unlike opti there is no matlab interface, apparently. 
>> 
>> I haven't heard of any of the formats specified in the SCIP documentation, are there any you would recommend as being straightforward to write a script to convert into the proper data format by printing appropriately from MATLAB problem data? I have heard it is possible to access it through ampl, but how would you run scip through the ampl mex?
>> 
>> Thank you
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