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## Objective Functions in AMPL
## DescriptionThe objective function of a mathematical programme is a function of the decision variables that measures the "worth" of the decisions. This "worth" is being either maximised or minimised (although, if no objective function is defined, AMPL will use the solver to search for a feasible solution).
## Declaring an Objective Function
Objective functions are declared using either the minimize TotalCost;
## Defining an Objective FunctionObjective functions are usually defined when they are declared, e.g., minimize TotalCost: sum {i in INGREDIENTS} Cost[i] * Amount[i]; However, in some cases (such as when models are defined by column), the objective function is defined later minimize TotalWorkers; var Work {j in SCHEDS} >= 0, integer, obj TotalWorkers 1, ... ; -- MichaelOSullivan - 02 Mar 2008 |

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