主管:中国科学院
主办:中国优选法统筹法与经济数学研究会
   中国科学院科技战略咨询研究院

中国管理科学 ›› 2025, Vol. 33 ›› Issue (2): 141-149.doi: 10.16381/j.cnki.issn1003-207x.2022.0939cstr: 32146.14.j.cnki.issn1003-207x.2022.0939

• • 上一篇    下一篇

考虑两种服务功能的粮食产后服务中心选址问题及Benders分解算法

张子卿, 王林(), 王思睿, 张金隆   

  1. 华中科技大学管理学院,湖北 武汉 430074
  • 收稿日期:2022-05-01 修回日期:2022-06-24 出版日期:2025-02-25 发布日期:2025-03-06
  • 通讯作者: 王林 E-mail:wanglin@hust.edu.cn
  • 基金资助:
    国家社会科学基金重大项目(20&ZD126)

The Location of Post-harvest Grain Service Centers Considering Two Service Capabilities and Benders Decomposition Algorithm

Ziqing Zhang, Lin Wang(), Sirui Wang, Jinlong Zhang   

  1. School of Management,Huazhong University of Science and Technology,Wuhan 430074,China
  • Received:2022-05-01 Revised:2022-06-24 Online:2025-02-25 Published:2025-03-06
  • Contact: Lin Wang E-mail:wanglin@hust.edu.cn

摘要:

粮食安全关系到国计民生,是国家安全的重要基础。粮食产后服务中心建设作为“优质粮食工程”的重要内容,是降低粮食产后环节损失的有效手段,对保障国家粮食安全有重要意义。本文考虑粮食产量的不确定性和粮食产后服务中心的多功能特性,建立了基于二阶段随机规划的粮食产后服务中心选址问题模型,对服务中心的选址、规模、能力分配和粮食物流进行决策。根据模型的特点,采用Benders分解算法进行求解,并用多重割、有效不等式和下界提升策略对算法进行加速。通过随机算例实验,验证了算法的有效性和加速后的算法相比于通用求解器Gurobi的优势。评估随机解的价值,发现考虑粮食产量随机性的随机解相比于确定解可以带来平均0.8%的成本节约。在实例分析中,根据湖北省84个县级区域粮食产量数据,利用提出的模型和算法得到湖北省粮食产后服务中心的最优地理位置分布、建设规模及能力分配方案,验证了模型和算法对于真实问题的有效性和可行性。

关键词: 粮食产后服务中心, 多功能特性, 选址-分配, 两阶段随机规划, Benders分解算法

Abstract:

Food security bears on the national economy and the people's livelihood, and is an important foundation for national security. The construction of thepost-harvest grain service center is a powerful means to reduce post-harvest grain loss, which is of great significance to guarantee national food security.In this paper, the location problem of post-harvest grain service centers is studied. Based on the reality and the emphasis of this study, the following assumptions are made: (a)The post-harvest grain service center has two kinds of service capabilities, i.e., cleaning&drying and storage; (b)All raw grain should be transported from the producing area to the service centers for “cleaning&drying” first, while the following "storage" service is optional, and the grain that does not receive “storage” service needs to be transported back to its origin; (c)Transportation of grain between service centers is not considered; (d)Grain yields obey some normal distribution. Before grain yieldsare determined, the following decisions should be made: (a) The number, location, and scale of service centers to be built; (b)The allocation of two service capabilities in each service center. After grain yields have been determined, grain logistics decisions between the producing areas and the service centers need to be made.Considering the two-stage decision characteristic and the assumption of the randomness of grain yields, a two-stage stochastic programming model is established to represent this problem. Based on the structural characteristics of the model, the Benders decomposition algorithm(BD) is used to solve it. Moreover, the multi-cut method, two sets of valid inequalities, and a lower bound lifting strategy are applied to accelerate the algorithm.In the test on random instances, the effectiveness of the algorithm acceleration methods and the advantages of the accelerated BD compared with the general solver Gurobi in solution accuracy are first verified. Then, the value of the stochastic solution (VSS) is calculated and it is obtained that the stochastic solutions considering the randomness of grain yields can bring an average cost saving of 0.8% compared with the deterministic solutions. In the real case study, based on the grain yield data of 84 county-level regions in Hubei Province, the optimal geographical distribution, construction scale, and capacity allocation scheme of grain post-production service centers in Hubei Province are obtained using the proposed model and algorithm, which verifies the model and algorithm for real problems.This is the first study on the location problem of post-harvest grain service centers. It enriches the existing literature onthe location-allocation problem by considering the capacity allocation decision in the model. The model is widely applicable to location problems of centers with multiple capabilities.

Key words: post-harvest grain service center, multi-functional characteristic, location-allocation, two-stage stochastic programming, Benders decomposition algorithm

中图分类号: