【摘要】 该文基于实际公交出行过程考察公交网络的特点,指出传统公交网络的局限性,并从公交出行时间链角度提出一种新的公交网络数据模型。该模型综合考虑公交出行中相对时间和绝对时间问题,将影响公众出行决策的所有因素折换成时间因素统一进行考虑和计算,给出基于XML的数据交换格式,并实现基于时间链的城市公交换乘信息的查询。更多还原

【Abstract】 Analyzing and modeling public transport network is an important research field in GIS-T.In order to solve the limitations brought by the idealized approximations and assumptions of traditional public transport model,this paper begins with the characteristics of real public transport travel model compared with traditional data model and then presents a new data model for public transport networks based on time chain using the concepts of relative time and absolute time.At last the effectiveness and reliability of the data model is testified by using an exchange data format with XML language.In conclusion,the data model and its XML presentation are effective not only for the public transport application but also for the share and exchange for the heterogeneous public transport data.更多还原