Interest has been shown recently in different approaches to formulating integer programming problems. In the paper of Williams 1 five different types of problems are considered and each is formulated in two different ways. The first of these problems will be considered here, a Market Share problem, and this will be formulated in two additional ways. The two additional formulations are in fact general methods of formulating certain types of problems in (0-1) variables and so can be used on other models.
/lp/association-for-computing-machinery/further-experiments-in-the-formulation-of-integer-programming-problems-1PGWvFjX1Y