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Integer Programming

Integer programmes are almost identical to linear programmes with one very important exception. Some of the decision variables in integer programmes can only have integer values. The variables are known as integer variables. Since most integer programmes contain a mix of real variables (i.e., that can have any real value) and integer variables they are often known as mixed integer programmes. While the change from a linear programming formulation is a minor one, the effect on the solution process is enormous. Integer programmes can be very difficult problems to solve and there is a lot of current research finding "good" ways to solve integer programmes.