1990
DOI: 10.1287/mnsc.36.3.381
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Optimal Centralized Ordering Policies in Multi-Echelon Inventory Systems with Correlated Demands

Abstract: This paper treats a depot-warehouse system in which demand occurs at the warehouse or retail level. This work differs from a number of other studies in that we allow item demands to be correlated both across warehouses and also correlated in time. Our motivation for this generalization arises from our experience with an actual system of this type used by a major national producer and distributor of consumer products. We observed both high correlations between successive monthly demands (around 0.7) and correla… Show more

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Cited by 154 publications
(69 citation statements)
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“…Johnson and Thompson (1975) are among the first to study correlated demand in a single item and a single location setting. Erkip et al (1990) consider a multi-echelon inventory system where demand is a first-order autoregressive process and is correlated across sites and time. These authors solve for the optimal safety stock level and show the impact of demand correlation over time.…”
Section: Literature Reviewmentioning
confidence: 99%
“…Johnson and Thompson (1975) are among the first to study correlated demand in a single item and a single location setting. Erkip et al (1990) consider a multi-echelon inventory system where demand is a first-order autoregressive process and is correlated across sites and time. These authors solve for the optimal safety stock level and show the impact of demand correlation over time.…”
Section: Literature Reviewmentioning
confidence: 99%
“…This problem arises in many domains and has many practical applications (see for example [8,14]). We consider two classical models, the periodic-review stochastic inventory control problem and the stochastic lot-sizing problem with correlated and non-stationary demands.…”
Section: Introductionmentioning
confidence: 99%
“…Erkip, Hausman, and Nahmias (1990) find that the autocorrelation in monthly demand can reach up to 0.70 in a consumer products company. Lee, Padmanabhan, and Whang (1997) report dependence between demand realizations over time -especially positive autocorrelation -in high-tech and grocery industries.…”
Section: Introductionmentioning
confidence: 91%