A New Approach to Modeling City Road Network
Traffic management has been a hot topic in recent years. However, how to model a city road network as well as the objects on road network still faces some problems. Previous data models for city road network typically focus on two types of objects, which are the city road network and the moving objects in the road network, and neglect the static spatial objects in road network. This will degrade the performance of spatiotemporal queries in city road network, especially that of nearest neighbor queries (NN queries) or K-NN queries. In this paper, based on a study on the characteristics of city road network and moving objects, we propose a new moving objects data model which can effectively represent city road network and the moving objects in it. The new model improves previous models with the introduction of static spatial objects. The detailed definition of the city road network as well as the moving objects and static objects are discussed. Compared with previous models, our new model is more effective to represent spatiotemporal queries over city road network.
city road network moving objects static objects spatiotemporal data model
Peiquan Jin Xu Zhang
School of Computer Science and Technology University of Science and Technology of China Hefei, P.R.China
国际会议
太原
英文
305-309
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）