[Couenne] Is there a callable library to use Couenne in C/C++?

[Ted Ralphs]

On Sat, Feb 21, 2015 at 6:37 PM, victor.zverovich at gmail.com <
victor.zverovich at gmail.com> wrote:

> Ted, by "OS passing the model directly to Couenne" you mean via some
> Couenne APIs or via intermediate XML files?
>

I mean via an API, which I guess is probably more part of OS than Couenne.
I'm not really too familiar with the implementation details, but the basic
workflow is to first create an OSInstance object using a solver-agnostic
API (similar in spirit to Osi, except with support for nonlinear modeling).
The API is here:

https://projects.coin-or.org/OS/browser/trunk/OS/src/OSCommonInterfaces/OSInstance.h

After creating the model, to pass it to Couenne, you
call buildSolverInstance() here:

https://projects.coin-or.org/OS/browser/trunk/OS/src/OSSolverInterfaces/OSCouenneSolver.cpp#L141

which translates the model into Couenne's native data structures. Finally,
you can call solve().

A detailed example is here:

https://projects.coin-or.org/CoinBazaar/browser/projects/ApplicationTemplates/trunk/instanceGenerator/OSInstanceGenerator.cpp

This functionality is what is planned to be the basis for "Osi 2" if that
project ever comes to fruition. I don't think many people realize how much
useful stuff is in the OS project.

Cheers,

Ted





-- 
Dr. Ted Ralphs
Professor, Lehigh University
(610) 628-1280
ted 'at' lehigh 'dot' edu
coral.ie.lehigh.edu/~ted
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