Journal
INTERNATIONAL JOURNAL OF PRODUCTION ECONOMICS
Volume 122, Issue 1, Pages 276-285Publisher
ELSEVIER
DOI: 10.1016/j.ijpe.2009.06.010
Keywords
Service-level optimization; Inventory control decisions; Inventory-location models; Facility location problems; Distribution network design
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We propose a sequential heuristic approach to optimize inventory service levels in a two-stage supply chain. The proposed approach deals with service level and inventory decisions, simultaneously with network design decisions, and incorporating unfulfilled demand costs in a previous inventory-location model. A two-step formulation is considered, where the first step optimizes service level and the second step addresses location and inventory decisions. Each algorithm iteration solves an inventory-location model for a fixed service level, and then the service level is updated in order to reach an equilibrium condition between operating system and unfulfilled demand costs. The algorithm converged in three iterations for a set of sample instances, obtaining the same outcome in comparison with a more intuitive, exact, but more time-consuming search procedure. (C) 2009 Elsevier B.V. All rights reserved.
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