Linear optimisation

Optimisation by linear programming requires software to resolve the LP model by means of the Simplex Method or another, faster algorithm.

A widely used software package is the program 'What's Best' by Lindo Systems, Inc. This program provides all relevant information for Open Design problems, including dual values (for sensitivity analysis) and validity ranges. Unfortunately, the validity ranges of the coefficients in the objective function (C-vector) are not provided and shadow prices related to minimum constraints (>) appear, incorrectly, with a minus sign.

The program must be used in combination with Microsoft Excel. For a description we refer to the user manual.

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