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Newsvendor Bounds and Heuristics for Serial Supply Chains with Regular and Expedited Shipping

机译:具有定期和加急运输的串行供应链的Newsvendor界限和启发式方法

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摘要

We study an infinite-horizon, N-stage, serial production/inventory system with two transportation modes between stages: regular shipping and expedited shipping. The optimal inventory policy for this system is a top-down echelon base-stock policy, which can be computed through minimizing 2N nested convex functions recursively (Lawson and Porteus, Oper Res 48 (2000), 878-893). In this article, we first present some structural properties and comparative statics for the parameters of the optimal inventory policies, we then derive simple, newsvendor-type lower and upper bounds for the optimal control parameters. These results are used to develop near optimal heuristic solutions for the echelon base-stock policies. Numerical studies show that the heuristic performs well.
机译:我们研究了一种无限水平,N阶段,连续生产/库存系统,在阶段之间有两种运输方式:常规运输和快速运输。该系统的最佳库存策略是自上而下的梯队基本库存策略,可以通过递归最小化2N个嵌套凸函数来计算(Lawson和Porteus,Oper Res 48(2000),878-893)。在本文中,我们首先介绍最优库存策略参数的一些结构性质和比较静态性,然后得出最优控制参数的简单,新闻卖方类型的下界和上限。这些结果用于为梯队基本库存策略开发接近最佳的启发式解决方案。数值研究表明,启发式算法表现良好。

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