Multiple Period Vehicle Scheduling Problem with Stochastic Demand and Delivery Smoothing

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  • 需要の変動および配送平準化を考慮した多期間配送計画問題
  • ジュヨウ ノ ヘンドウ オヨビ ハイソウ ヘイジュンカ オ コウリョシタ タ

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This paper proposes modified vehicle scheduling problem to maximize resource utilize, so as to minimize necessary stocking spaces, inventory levels and shortages. Multiple period delivery scheduling problem in a system with one depot and N retailers is considered. The depot is responsible for replenishing inventories in the retailers. Stochastic demand are considered, and an algorithm for the delivery scheduling is presented introducing surplus delivery and backward approach of delivery smoothing. Through numerical experiment using real data of AVM (Automatic Vending Machine) and a common test data from a ftp site, resource utilization is increased to 99.67%, while the average stocking space is decreased by 17.35%, and average level of inventory is decreased by 25.7%, and average ratio of stock out is decreased by 14.77%.

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