IntegralityGap

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of a maximization problem, the integrality gap is the reciprocal. The
integrality gap of the problem is the worst-case integrality gap for
any instance of the problem.

of a maximization problem, the integrality gap is the reciprocal.

The ratio

: (cost of optimal solution to original problem)/(cost of optimal solution to relaxed problem)

is called the integrality gap of an IntegerLinearProgram.?

In case of a maximization problem, the integrality gap is the reciprocal.