[Scip] Recommended language for QP with quadratic and cubic constraints

[Ramón Casero Cañas]

Replying a bit to myself, if I understand this correctly, I need a
language for a mixed-integer program (as my variables are continuous).

http://scip.zib.de/doc-3.0.2/html/group__FILEREADERS.shtml

Of these, the only two that from their description above seem capable
of cubic constraints are OSiL, PIP and ZPL.

As my problem's objective function and constraints are polynomial
(quadratic and cubic, respectively), the simplest option seems to be
the PIP format.

http://polip.zib.de/pipformat.php

However, will the language format choice affect the performance of the
SCIP solver, or it doesn't matter whether I formulate my problem in
PIP format vs. e.g. OSiL format?

Best regards,

Ramon.

On 23 February 2014 00:28, Ramón Casero Cañas <rcasero at gmail.com> wrote:
> Dear all,
>
> After playing with SCIP indirectly through the otherwise very nice
> Matlab OptiToolbox, I'm struggling with what could be a bug and I
> cannot introduce cubic constraints, so I'm looking into using SCIP
> directly. This way, I could also use it from linux, and tweak
> parameters as Stefan Vigerske recommended and I haven't been able to
> do yet.
>
> I see in the documentation that SCIP accepts many file formats.
>
> http://scip.zib.de/doc-3.0.2/html/group__FILEREADERS.shtml
>
> This field is quite new for me, and I'd like to ask for advice on what
> file format would be more convenient / easier to learn in order to
> code a problem that is a quadratic program (objective function x^T * H
> * x + b^T * x) with multiple quadratic and cubic constraints.
>
> Best regards,
>
> Ramon.
>
> --
> Dr. Ramón Casero Cañas
>
> Oxford e-Research Centre (OeRC)
> University of Oxford
> 7 Keble Rd
> Oxford OX1 3QG
>
> tlf     +44 (0) 1865 610739
> web     http://www.cs.ox.ac.uk/people/Ramon.CaseroCanas
> photos  http://www.flickr.com/photos/rcasero/



-- 
Dr. Ramón Casero Cañas

Oxford e-Research Centre (OeRC)
University of Oxford
7 Keble Rd
Oxford OX1 3QG

tlf     +44 (0) 1865 610739
web     http://www.cs.ox.ac.uk/people/Ramon.CaseroCanas
photos  http://www.flickr.com/photos/rcasero/