On the Evaluation of Downstream Information Sharing(<Special English Issue>-Information and Operations Management)

概要

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Information sharing is one important issue of supply chain management. Sharing buyer's information, a supplier can obtain great benefits such as, quicker and more accurate response to the market, earlier procurement, etc. CRP (continuous replenishment planning) and VMI (vendor managed inventory) are typical models of this type of information sharing, where the upstream stage shares the downstream stage's information. In this paper, we consider another type of information sharing in which a downstream stage shares the upstream stage's information. We construct a model with information sharing and several reference models without information sharing. Through computer simulation, we evaluate the value of information sharing in terms of reduction of average inventory and ratio of stockout. Simulation results show that the model with limited production capacity and information sharing had a smaller ratio of stockout compared to the model with infinite production capacity and no information sharing, while the models yielded almost the same average inventory. A further evaluation comparing the well known nested property (or synchronous ordering) shows that the model with information sharing had a smaller ratio of stockout while the models yielded almost the same average inventory. A brief discussion on the effects of number of buyers with information sharing is presented.
社団法人日本経営工学会の論文
2006-02-15