ORDERING AND WAREHOUSING STRATEGIES FOR MULTI-ITEM MULTI-BRANCH FIRM'S INVENTORY: CLUSTERING APPROACHES

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概要

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• This paper develops optimal inventory models for a firm with multiple items and multiple branches by taking into account the price discount of sizable procurement and the scale economies of centralized warehousing and consolidated transportation. Four inventory strategies are proposed: independent ordering and decentralized warehousing, independent ordering and centralized warehousing, joint ordering and decentralized warehousing, and joint ordering and centralized warehousing. The performances of pure policy (all items subject to adopting only one of the four strategies) and mixed policy (different items allowed to adopting different strategies) are compared. The mixed policy employs genetic stepwise clustering and statistical agglomerative clustering methods to classify items into appropriate clusters and then to determine the best strategy for each cluster. A firm of four branches with fifty heterogeneous items is analyzed. It is found that, in terms of total cost minimization (including ordering, warehousing, transportation and procurement costs), the mixed policy with clustering is superior to pure policy without clustering. For mixed policy, genetic stepwise clustering performs better than statistical agglomerative clustering.

• Eastern Asia Society for Transportation Studiesの論文

著者

• LAN Lawrence

  Institute of Traffic and Transportation National Chiao Tung University

• CHIOU Yu-Chiun

  Department of Traffic and Transportation Engineering and Management Feng Chia University

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• ORDERING AND WAREHOUSING STRATEGIES FOR MULTI-ITEM MULTI-BRANCH FIRM'S INVENTORY: CLUSTERING APPROACHES

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