Stochastic joint replenishment problem with quantity discounts and minimum order constraints
- Authors
- Noh, Ji Seong; Kim, Jong Soo; Sarkar, Biswajit
- Issue Date
- Mar-2019
- Publisher
- Springer Verlag
- Keywords
- Inventory control; Joint replenishment problem; Quantity discount; Minimum order quantity
- Citation
- Operational Research, v.19, no.1, pp 151 - 178
- Pages
- 28
- Indexed
- SCIE
SCOPUS
- Journal Title
- Operational Research
- Volume
- 19
- Number
- 1
- Start Page
- 151
- End Page
- 178
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/3453
- DOI
- 10.1007/s12351-016-0281-6
- ISSN
- 1109-2858
1866-1505
- Abstract
- This paper analyzes a logistics system involving a supplier who produces and delivers multiple types of items and a buyer who receives and sells to end customers. The buyer controls the inventory of each item by ordering at a preset time interval, which is an integer multiple of a base cycle, to meet the stochastic demands of the end customers. The supplier makes contracts with the buyer that specify that the ordered amount is delivered at the start of each period at a unit price determined by a quantity discount schedule. The contract also specifies that a buyer's order should exceed a minimum order quantity. To analyze the system, a mathematical model describing activities for replenishing a single type of item is developed from the buyer's perspective. An efficient method to determine the base cycle length and safety factor that minimizes the buyer's total cost is then proposed. The single item model is extended to a multiple items joint replenishment model, and algorithms for finding a cost-minimizing base cycle, order interval multipliers, and safety factors are proposed. The result of computational experiments shows that the algorithms can find near-optimal solutions to the problem.
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