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Design Of Real-time Dispatching Expert System Of Public Transportation And Relating Algorithms Research

Posted on:2008-03-23Degree:MasterType:Thesis
Country:ChinaCandidate:D D GuoFull Text:PDF
GTID:2132360242474625Subject:Systems Engineering
Abstract/Summary:PDF Full Text Request
Real-time bus dispatching expert System of is an application fruit of Artificial Intelligence and an indispensable part of Public Traffic Dispatching System. It has integrated with Information Management System, Software Engineering, System Engineering, Neutral Network, genetic algorithm Expert System theory, public traffic dispatching. This creative appliance is of high importance to better urban traffic conditions, improve the level of public traffic management and intelligent dispatching. On the basis of deep and widespread research of domestic and foreign document, we have made an all-rounded and systematic research on the basic concepts, theory, concepts, working principles and techniques of Expert System. The main contents are as follows:1. Considering the disadvantages of static dispatching like low flexibility and inability to adapt to changeable road environment, we analyze the necessity of the research of dynamic dispatching. Based on the principle of bus dispatching, the dissertation analyzes the effects of the factors on real-time and their interactive affections, then put forward the relating method and strategy.2. According to the characteristics of the knowledge of the bus dispatching area, we design the knowledge model of the Bus Dispatching Expert System—the model of the integration of production rule and object-oriented. Meanwhile we put forward the reasoning model of the system and relating reasoning strategy.3. Based on the practical conditions of real-time dispatching, we design abnormity classes. In order to quickly diagnose abnormities during real operation and meet requirements to set up a knowledge database for expert system, we design a clustering algorithm to check abnormity classes and create new abnormity classes.4. In terms of dynamical creating real-time dispatching schemes, we put forward a mathematics model to optimize dispatching. We also effectively avoid slow convergence of traditional algorithm by the way of genetic algorithm.
Keywords/Search Tags:Expert System, real-time dispatching, knowledge database design, abnormity clustering
PDF Full Text Request
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