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A Mathematical Safety Stock Model for DDMRP Inventory Replenishment

机译:DDMRP库存补充的数学安全股模型

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The inventory replenishment method of the demand-driven materials requirement planning (DDMRP) draws attention from both scholars and practitioners due to its lower average inventory and, simultaneously, lower stockout rate than existing methods. However, the safety stock of DDMRP replenishment uses a subjective guideline, which is different from any existing safety stock formula. The guideline allows the user to subjectively select the parameter values within a certain range, which jeopardizes the consistency of the inventory performance. This paper proposes an alternative safety stock formula for DDMRP replenishment, which is mathematically defined so as to be consistent. Moreover, simulation indicates that the proposed formula outperforms the DDMRP guidelines and existing safety stock formulas in terms of average inventory and stockout rate.
机译:需求驱动材料需求规划的库存补充方法(DDMRP)由于其较低的平均库存和同时较低的库存排放率而不是比现有方法,因此引起了学者和从业者的注意。然而,DDMRP补货的安全库存使用主观指南,这与任何现有的安全库存公式不同。该指南允许用户主观选择一定范围内的参数值,这会危及库存性能的一致性。本文提出了替代安全库存公式,用于DDMRP补货,这是在数学上定义的,以便保持一致。此外,仿真表明,在平均库存和库存开汇率方面,所提出的公式优于DDMRP指南和现有的安全股票公式。

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