변화하는 수요율을 고려한 다단계 재고모형의 개선 알고리즘
An Improved Algorithm for Multi-Echelon Inventory Models in Consideration of Changing Demand Rates
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The METRIC-based inventory model calculates an optimal level for spare parts stock under average demand rate conditions. However, its application is restricted when the demand rate is altered. For reflecting the dynamic conditions of demand rates, a time-dependent demand rate should be considered. This study is based upon the logic of the ASM(Aircraft Sustainability Model), which can reflect changing demand rate. We improve the accuracy of the model concerning the resupply pipeline by adopting the principle of conditional probability of binomial distribution. Furthermore, this study proposes an improved algorithm for the allocation of spare parts. The proposed algorithm overcomes the drawbacks of the Greedy Algorithm, which sometimes offers suboptimal solutions. The proposed algorithm provides an optimal solution while reducing calculation time significantly. The numerical example demonstrates the degree to which the accuracy of model is improved.
Abstract
The METRIC-based inventory model calculates an optimal level for spare parts stock under average demand rate conditions. However, its application is restricted when the demand rate is altered. For reflecting the dynamic conditions of demand rates, a time-dependent demand rate should be considered. This study is based upon the logic of the ASM(Aircraft Sustainability Model), which can reflect changing demand rate. We improve the accuracy of the model concerning the resupply pipeline by adopting the principle of conditional probability of binomial distribution. Furthermore, this study proposes an improved algorithm for the allocation of spare parts. The proposed algorithm overcomes the drawbacks of the Greedy Algorithm, which sometimes offers suboptimal solutions. The proposed algorithm provides an optimal solution while reducing calculation time significantly. The numerical example demonstrates the degree to which the accuracy of model is improved.
참고문헌 (30)
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