Optimal lot-sizing/vehicle-dispatching policies under stochastic lead times and stepwise fixed costs
成果类型：
Article
署名作者：
Alp, O; Erkip, NK; Güllü, R
署名单位：
University of Alberta; Middle East Technical University
刊物名称：
OPERATIONS RESEARCH
ISSN/ISSBN：
0030-364X
DOI：
10.1287/opre.51.1.160.12799
发表日期：
2003
页码：
160-166
关键词：
摘要：
We characterize optimal policies of a dynamic lot-sizing/vehicle-dispatching problem under dynamic deterministic demands and stochastic lead times. An essential feature of the problem is the structure of the ordering cost, where a fixed cost is incurred every time a batch is initiated (or a vehicle is hired) regardless of the portion of the batch (or vehicle) utilized. Moreover, for every unit of demand not satisfied on time, holding and backorder costs are incurred. Under mild assumptions we show that the demand of a period is satisfied from at most three distinct production (dispatching) epochs. We devise a dynamic programming algorithm to compute the production/dispatching quantities and times.