Logistics System Location Model Realization

This paper regard the four location problems, such as distributing center, warehouse, fetching cargoes and cargoes distributing routing, as an abstract problem. This four location problems are widely applied in transportation, traffic, storage, industry explore and etc. In recent years, location problems in logistics are a hot topic in the world. Based on the classification of four location problems, this paper draws out two universal models of location problems from the theory, analyses and implements its proper optimal algorithm. The specific contents as followings:Firstly, this paper gives out two comprehensive and universal function models based on above abstract. In many modeling methods, only AHP has both quantity analysis and qaulitative analysis, so this paper chooses AHP to hypothesis , model and check in logistic location problems. Meanwhile it also introduces AHP' s idea in detail and the random index to evaluate whether AHP medel gets consistent has been calculated in 50 various scales by programming.Secondly, it introdeces two common optimal algorithms, which is stimulating annealing and genetic algorithms. By analysing and comparing their ideas, one table is listed with the factors, such as the property of results, initial values, restrict conditions and the speed of convergence. Finally I implement two location model with common Di jkstra algorithm and stimulation annealing merged with GAs, at the same time I give out some experiment datas and the idea of algorithm.Finally, with the former theory analyse, the whole design of logistics system is drawn out, and to the warehouse management model, I give out its detail design and relevant algorithm.