20 Conclusion

This paper gave a limited overview of some model classes. It shows a unified implementation into the LPL modeling language. LPL can analyze the model and selects automatically the right solver, based on a classification, to solve it. The actual LPL language is far from complete, it is thought as a research vision to formulate all kind of models in a unified modeling language. That language should also contain most concepts of a modern programming language – which LPL doesn’t right now.

As said, LPL is a small subset of that unified modeling language, but a special model class, namely large linear MIP models, are efficiently formulated and are used in a commercial context.