Forum Discussion

FICO's avatar
FICO
Community Manager
6 years ago

Is an interface between Xpress-Mosel and the global (non-convex) optimization solvers Baron or Antigone possible?

I'm working for several years in a PhD-project on engineering problems in membrane cascades containing bilinear terms (MINLP). We initially tried to solve the generated problems with (I presume an SLP-based) solver in our Xpress floating license. Unfortunately in vain. Next we tried the GAMS-Baron/Antigone interface (NEOS) and it works fine. Now, we intend to make this study part of a new course Decision Science for Technology (DST); specifically for engineering students. In most of our courses, including DST, we use the modelling and programming environment Mosel for different cases. It would be a pity if we have to introduce a second modelling language like GAMS or AMPL as an interace for the Baron solver. Any other suggestion is welcome!    

2 Replies

  • FICO's avatar
    FICO
    Community Manager

    Via the Mosel module 'nlsolv' you can use any LP/MIP or NLP solver that supports the NL file format from the Mosel language - for further detail please see the whitepaper 'Xpress Mosel solver interfaces', in particular the section 'Configuring a solver' that provides a number of setup examples (the solver choice is configured through 2 parameters) and links.

  • FICO's avatar
    FICO
    Community Manager

    Thanks for your prompt reply! We'll have a look into the NL file format. Would be great!