Complexity Analysis of Qingdao's Public Transport Network

Public transport network reflects the whole city's public transport environment, the geometrical property of which plays an important role on the public transportation. In this paper, the theory of complex network was used to study the public transport network of Qingdao and construct the transportation transfer network based on the stops. In order to study this network, some calculations are made to get topology such as degree distribution, clustering coefficient, average path length and so on. It is found that clustering coefficient couldn't show the density of the network clearly and has negative correlation with the numbers of the bus line passed that stop. The result shows that the public transport network of Qingdao is a connected network with a rather small average path length and a big clustering coefficient and its degree distribution follows the exponential distribution. All of these prove that the Qingdao public transport network exhibits the small-word properties and Qingdao's Public Transportation is rather convenient.