公交网络层次化建模方案的设计与实现

uring the process of transport transfer, people often give priority to sites with most lines across. Therefore, the number of bus lines of each site is calculated, while sites with a large number of bus lines are identified as hub sites. All of the hub sites obtained work as sites at the highest level. When the destination cannot be reached through zero or one time of transfer from the departure, transfer at hub sites is primarily considered, which is the basic idea of the hierarchical algorithm in this article.To the implementation of the hierarchical algorithm, we must first calculate the degree of each site of the bus network access, connectivity of the statistical discrepancy between the high site, and on this basis, the statistics get all the public transport network the hub site, then apply hub site to the final realization of the hierarchical algorithm.