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Lower Bounds and Heuristics for Supply Chain Stock Allocation
Lunds universitet. (Tekniska högskolan, Produktionsekonomi)
Linnaeus University, Faculty of Science and Engineering, School of Engineering.
2012 (English)In: Operations Research, ISSN 0030-364X, E-ISSN 1526-5463, Vol. 60, no 1, p. 92-105Article in journal (Refereed) Published
Abstract [en]

Assume that in periods with stochastic demand remain until the next replenishment arrives at a central warehouse. How should the available inventory be allocated among N retailers? This paper presents a new policy and a new lower bound for the expected cost of this problem. The lower bound becomes tight as N -> infinity. The infinite horizon problem then decomposes into N independent m-period problems with optimal retailer ship-up-to levels that decrease over the in periods, and the warehouse is optimally replenished by an order-up-to level that renders zero (local) warehouse safety stock at the end of each replenishment cycle. Based on the lower bound solution, we suggest a heuristic for finite N. In a numerical study it outperforms the heuristic by Jackson [Jackson, P. L. 1988. Stock allocation in a two-echelon distribution system or what to do until your ship comes in. Management Sci. 34(7) 880-895], and the new lower bound improves on Clark and Scarf's [Clark, A. J., H. Scarf. 1960. Optimal policies for a multi-echelon inventory problem. Management Sci. 6(4) 475-490] bound when N is not too small. Moreover, the warehouse zero-safety-stock heuristic is comparable to Clark and Scarf's warehouse policy for lead times that are not too long. The suggested approach is quite general and may be applied to other logistical problems. In the present application it retains some of the risk-pooling benefits of holding central warehouse stock.

Place, publisher, year, edition, pages
2012. Vol. 60, no 1, p. 92-105
National Category
Civil Engineering
Research subject
Economy, Logistics
Identifiers
URN: urn:nbn:se:vxu:diva-7395DOI: 10.1287/opre.1110.1009Scopus ID: 2-s2.0-84859569075OAI: oai:DiVA.org:vxu-7395DiVA, id: diva2:300726
Available from: 2010-02-28 Created: 2010-02-28 Last updated: 2017-12-12Bibliographically approved

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Rosling, Kaj

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  • apa
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