Design And Implementation Of An Experimental Platform For Modeling And Solving Container Dray Age Transportation Problems

In recent years,with the development of economy and the increase of volume of trade,the importance of container transportation is gradually emerging.Many scholars have done some research about container transportation.Container drayage transportation is an important classification of container transportation.Many scholars have proposed some new optimization algorithms for container drayage transportation problems.For one kind of problems,the solutions of new algorithm need to be compared with the solutions of existing algorithms to prove effectiveness of the new algorithm.In order to facilitate researchers who study relative problems to compare algorithms,an experimental platform for modeling and solving container drayage transportation problems is designed and implemented.Using this platform researchers can save their time and improve research efficiency.The main work of this thesis is as follows:(1)On the basis of consulting a large number of domestic and international literature,the knowledge and technology of B/S structure and SSM framework used in system design and development,as well as modeling and solving methods of container drayage transportation problem are analyzed and summarized.(2)On the basis of the detailed analysis of researchers' needs for the experimental platform,related functional modules of the container drayage transportation experimental platform are designed.The Cplex interface is designed to interact with Cplex,so problem instances can be solved in Cplex.The related functional processes of the experimental platform are sorted out,and the operation processes of platform and each functions are given.After detailed analysis of the related data involved in the platform,the related entities and the properties of each entity are given.On this basis,the platform database is designed in detail.(3)Based on overall design of the platform,implementation of the platform is completed.JavaScript and HTML technology are used to develop the front page and the SSM framework is used to write the background program on the Java platform.The background program mainly includes four parts:the algorithm program,the page jumping logic,the database operation and the data transmission.(4)Based on a large number of random instances created by the platform,the parameters of RTS algorithm is tuned,the influence of algorithm parameters on the results is analyzed and the stability of the algorithm is verified.Compared the results of RTS algorithm with the Cplex calculation results,the validity of the algorithm is verified.Some preliminary management enlightenment are obtained by parameter adjustment experiment on the truck number and loading time.Furthermore,those experiments embodi the practical value of the platform.