Reducing the Number of Changeover Constraints in a MIP Formulation of a Continuous-Time Scheduling Problem
In this paper, we develop a new formulation of changeover constraints for mixed integer programming problem (MIP) that emerges in solving a short-term production scheduling problem. The new model requires fewer constraints than the original formulation and this often leads to shorter computation time of a MIP solver. Besides that, the new formulation is more flexible if the time windows for changeover tasks are given.
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