[Coin-discuss] Open-source Modeling Languages

[Luigi Poderico]

Sebastian Nowozin wrote:
> Hello everybody,
>
> I have been a user of coin software since some time now and I am
> steadily impressed by the number of alive, high-quality projects
> hosted by COIN-OR.  Thanks for all the hard work.
>
> In my impression COIN has a great selection of high quality solvers
> and if for a certain problem the solver can be comfortably be used by
> Osi or another "low-level" interface there is no problem.  For
> prototyping or testing/experimenting with models however, there seems
> to be no real open-source modeling language.
>
> I know about ZIMPL and the AMPL-subset MathProg in GLPK, but they are
> limited to linear programs and also the long-term direct integration
> with the COIN-solvers has license incompatibilities.  Additionally,
> for MathProg, the problem can only be imported but not again outputted
> using MathProg (as you can when using GLPK or if you use AMPL+CBC).
>
> Are there any plans or directions for a more powerful open-source
> modeling language supporting the features of COIN-OR solvers? (similar
> to AMPL, GAMS, MathProg or ZIMPL, but open-source and
> license-compatible with COIN projects)
>
> Thanks,
> Sebastian
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>

Dear all,

I'd like to point you to PuLP, a linear programming modeler in python.
You can find it at http://www.jeannot.org/~js/code/index.en.html#PuLP.

I've used it in many examples, finding it very powerful and verasitle.

A pump scheduling example is availables at
http://pump-scheduling.googlecode.com/svn/trunk/model.py

Best regards,
Luigi

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