Xpress-IVE integration with NEOS

The Xpress-IVE Student Edition may now be used as a client for the Xpress-MP service on NEOS. This feature allows students to model their problems using the powerful and easy to use Xpress-IVE environment while taking advantage of the full power of the Xpress-Mosel language and the Xpress-Optimizer solver. This facility is for students doing academic work who would like to solve problems larger than the limitations in the Student Edition of Xpress-IVE. An account for NEOS with Dash Optimization is required, and there are usage restrictions.

The Xpress-Mosel language includes the features of a standard programming language, such as loops (forall, while, repeat/until), conditions (if/then/else, case) and procedures/functions, allowing you to perform complex operations, and even algorithms or heuristics that make repeated calls to the Optimizer. The Mosel model may also include statements to set Optimizer control parameters to non-default values.

The Xpress-MP modeling and optimization system Xpress-IVE accepts as input an Xpress-Mosel model file. This file includes the algebraic description of the problem, an optimization call (or calls), and any customized report writing statements required. Xpress-IVE calls the Xpress-Optimizer to solve problems as required, and can solve linear, integer, quadratic or mixed integer quadratic programming problems (LP, MIP, QP, MIQP). The results from running the model/problem are returned seamlessly back into the Xpress-IVE output window.

You can start using NEOS from Xpress-IVE right now. Open a Mosel model and go to the menu Build->Send to NEOS... Follow the simple instructions and wait for the results to be returned back into IVE.

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