An Analysis of Complexity of Public Transportation Network in Shanghai

Urban public transportation system can be abstracted as a complex network composed of stops and public transportation lines.The geometric characteristics of the network have an important effect on the conditions of the public transportation of a city.In this paper,based on the computation of the degree distribution,average path length,and clustering coefficient,complex characteristics of a public transportation system of Shanghai are studied.And also,the robustness of the network on error and attack is also studied.The result indicates that the degree distribution of the network follows a power law distribution,and the public transportation network of the city is a network with short average path length and high clustering coefficient.And,the network displays a very high degree of robustness against error,but display a low robustness against attack.