Set the objective

The objective is the single number that the service makes as small (minimize()) or as large (maximize()) as possible. Calling either function again replaces the objective. An expression with several elements has to be combined into one first, for example with sum(). A model without an objective asks for any solution that meets the constraints.

Usage

minimize(m, e)

maximize(m, e)

Arguments

m

A model().

e

The expression to minimize or maximize.

Value

The model, invisibly.

Details

In a model with random variables, the objective has to be one number, not one per scenario: summarize it first, for example with expectation() (the stochastic help page lists all the summaries).

Examples

m <- model()
tables <- num_var(m, "tables", lower = 0)
chairs <- num_var(m, "chairs", lower = 0)
maximize(m, 50 * tables + 20 * chairs)    # the profit