Terminology
The variables x1. . . , xn are called decision variables of the
problem. The linear function to optimize is called function
objective (or function object). The constraints take the form of
linear equations and inequations.
Constraints of the form:
lj = xj = uj lj, uj ? R U {±8 }
are called terminals constraints, they are often summarized with
constraints of nonnegativity xj = 0 and are generally treated in a
special way by the algorithms of resolution.
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