基于权重调整的公交网络效率研究
Research of weight adjustment on the efficiency of transit networks

摘要 公交网络效率的高低关系着城市客运工作能否通畅有序运行.任意站点间的客运效率与整个公交网络的客运效率是局部与整体的关系，如何以最合理的局部效率改善达到提升整个公交网络效率的目的，是当前一项重要的研究课题.公交站点网络是无标度网络，网络边上的权重可表征站点之间的通行时间，调整边权重成为改善公交网络效率的途径之一.本文从宏观网络的角度，基于权重维度，研究权重在无标度网络中的不同分布对网络效率的影响.通过对权重在无标疫网络中作用的验证,为公交网络的优化提供新的指导方法.
Abstract：Efficiency of transit networks is often critical to the operations of urban transportation. Transport efficiency between any bus stations and that in the transit network are both on the relation between the part and the whole. How to improve the efficiency of the whole transit network by adjusting local efficiency is a very important research project. Bus station network is scale-free network. Link weight is the travel time between any stations. Therefore, the adjustment of weight becomes one of the methods to improve the efficiency of public transport network. From the perspective of network, the effects of weight distribution on the scale-free networks efficiency are investigated. The results demonstrate that exponential distribution of link weight shows significant improvement to the efficiency of transit networks in both global and local. This paper could provide a new guidance for the optimization of public transport network, through the role of weights in scale-free network is verified.