UIMP is a matrix-generator report-writer system designed to aid the realization (generation) of mathematical programming models and also the analysis-reporting of the solutions of such models. The data structure facility of the system allows the underlying structure of a user model to be captured and helps to define such models. This data-structure feature is not only a powerful modelling aid, it also finds use in the analysis of solutions and report generation. The experience of using the system, its shortcomings and possible extensions are also discussed.
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