A mathematical model for a capacity reservation contract |
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Institution: | 1. Department of Industrial Engineering, Graduate School, Hanyang University, Seoul, South Korea;2. Department of Industrial and Management Engineering, Hanyang University, Erica Campus, Ansan, South Korea |
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Abstract: | It is common practice in many industries to use a replenishment contract with a mechanism of capacity reservation. In this paper, we focus on a multi-period capacity reservation contract practiced between a buyer, who buys a single type of product and sells it to end-customers, and two or more heterogeneous suppliers, who produce and replenish the product as agreed upon contractually.In this paper, a mathematical model including several key features of a real contract is developed for a single supplier situation from the buyer’s perspective. It is then extended to a multiple supplier model for a system in which there are several heterogeneous suppliers with different capacities and prices. A rolling-horizon implementation strategy is suggested for the efficient application of the models. Extensive computational experiments demonstrate that the model and strategy can produce cost effective contractual terms for the buyer within a few seconds. |
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Keywords: | Inventory management Linear programming Capacity reservation contract Rolling-horizon Mathematical modeling |
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