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Supporting the city 's urban transport development , the level of construction is closely related with people's daily quality of life and economic development . With the development of society , the dramatic expansion of the size of the cities , and the accelerated pace of people's lives , people put forward higher requirements of rapid urban transport . However , for the already sizable city , new construction and expansion of roads subject to space restrictions , relying solely on the construction of infrastructure can not meet the needs of society to solve the traffic problem . More and more attention in intelligent transportation systems for urban traffic , of existing resources and reasonable , and effective utilization . Road network modeling as a basis for intelligent transportation systems , and well received by the scientific community concerned about the gradual evolution to become a research hotspot , the establishment of the urban road network model has become the focus of this research . The topic is based on the theory of knowledge base in the field of artificial intelligence , semantic network topology knowledge , technology , Borland C Builder development platform, as a background for the Shenyang City , and establish a road network knowledge base system . The use of the basic characteristics of the urban road network based on the characteristics of urban road network topology modeling defined morphological characteristics combine intersection bifurcation , based on the relationship between the characteristics and generalized road network topology modeling , its taboo constraints and institutions with the Road formulation . The research objectives of this project is to build a road network to describe the real world , and can route planning based on this model to provide a good support for the road network knowledge base system . The thesis detailed analysis at home and abroad on the status of the road network model Currently , most of the studies , the road network as a spatial network abstract graph model . Limited to the rich urban traffic network characteristics , properties, and complexity , conventional graph model is difficult to meet the requirements to be a comprehensive description and depiction of the various features of the urban road network . Subsequently, a comprehensive discussion of the modeling method based on the topology of the urban road network characteristics and generalized thinking , at the same time , the entire knowledge base system design and realization , made a detailed introduction . Finally , it is pointed out that the topic surviving limitations and weaknesses , and its future priorities and direction .
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