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Research on Bi-level Model and Method in Logistics Programming

Author: ZhouLei
Tutor: DuGang
School: Tianjin University
Course: Management Science and Engineering
Keywords: Transportation Planning Distribution center Logistics center Bilevel programming Location Model Genetic Algorithms
CLC: F252
Type: Master's thesis
Year: 2007
Downloads: 446
Quote: 2
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Abstract


With the rapid development of the world economy and the progress of modern science and technology, modern logistics industry as an important part of the modern economy and the process of industrialization in a reasonably comprehensive service model, rapid development worldwide. At the same time, the increasingly fierce market competition forcing companies to continue to seek continuous improvement of logistics planning mode, to meet the user requirements in performance, style, quality, price, delivery time and service products. How to build a model of logistics enterprises and social development, and to support the quantitative methods of decision-making in the logistics planning is a very subject of research value. Bilevel programming is used widely in recent years planning method, it is applicable to systems with hierarchical structure, the overall optimal, and this is precisely the characteristics of the logistics planning problems. Summary of theoretical research on the basis of double-layer optimization model and method of logistics planning, the main contents are as follows: 1. Based on the analysis of the content and characteristics of transportation decision-making in the transportation planning dual layer planning model. Then, according to the characteristic of the model using genetic algorithm to solve. 2. Analysis of the distribution center location of the bi-level programming model and methods. Bunk location model to establish a distribution center with fuzzy parameters, and confidence level of the maximum supply capacity according to the demand for places maximum demand level of confidence, factories and distribution centers, distribution centers customers the biggest attraction of the confidence level of the model is transformed into Fuzzy chance constrained bilevel programming model, and then based on the theory of probability model is transformed into a bi-level programming model can be solved to determine. Model characteristics analysis, design a genetic algorithm-based solution. Elaborated bi-level programming model and methods in the planning of the logistics center. The main function of the logistics center, on the basis of the classification and business model, the location decision-making level optimization model with several applications in the logistics center, logistics center location combined with path selection, combined with the customer to choose logistics center location, combined with economies of scale logistics center location. Finally elaborated application level optimization model for the expansion of the logistics center optimization study. In chapters 4 and 5 of the basis of bi-level programming used in Tianjin Airport Logistics Park Planning two cases.

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