The Maximization of a Quadratic Function of Variables Subject to Linear Inequalities

Published Online:https://doi.org/10.1287/mnsc.10.3.515

A simplex-type method for finding a local maximum of

subject to
and
is proposed. At a local maximum, the objective function (1), can be expressed, in terms of the non-basic variables λ0, as
and the vector of partial derivatives of (13), with respect to the non-basic variables may be written,
This allows calculation of the maximum values of the non-basic variables, increased one at a time, consistent with ∇Z0. A “cutting plane” a**λ′ ≧ 1 is then defined which excludes the local optimum, and many lower values (but no higher values) of (1).

The form of the square matrix C is immaterial.

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