[Scip] how to add quadratic constraint handler

[Ambros Gleixner]

Dear Ahmad,

you are right, you will need to put your problem into form

    min { z : z >= f(x), x \in P }

where f is your quadratic objective function and P your polytope.

SCIP 3.0 constains the example project "CallableLibrary" (in the folder 
example/CallableLibrary) with three examples of how to create nonlinear 
constraints if not using a file reader:

- src/circle.c (second-order cone constraints)
- src gastrans.c (abspower constraints)
- src/string.c (quadratic and general nonlinear constraints)

The last one should be good for your purpose.

Best regards,

Ambros



Am 27.11.2012 10:38, schrieb Ahmad Moradi:
> Dear all,
>
> Could somebody possibly provide me with an example of using quadratic
> constraints handler since I am a newbie in scip's MINLP components.
> Actually I have quadratic objective function to be minimized over a
> polytope. And I think I have to add it az a constraint to scip.
>
> Bests,
> Ahmad
>
>
>
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-- 
____________________________________________________________
Ambros M. Gleixner
Zuse Institute Berlin - Matheon - Berlin Mathematical School
http://www.zib.de/gleixner