Topological Characteristics And Optimization Of Harbin Public Traffic Network Based On Complex Network

In recent years,with the improvement of people's life and the number of cars is increasing in the number of cars,air quality of large city deteriorated sharply,serious traffic congestion phenomenon became normal.In order to be more convenient,low-carbon,green travel,more and more people choose to take public transport,public transport system network construction has become an important factor affecting the lives of the public.In this paper,Taking the Harbin bus system as the research object,and complex network analysis theory for the research methods,using Pajek,MySQL,MATLAB and other software for modeling analysis.This paper establishes the Non-directional weighted network models of bus line network and public bus transfer network.The bus line network is weighted by the bus line as a node,bus transfer network is weighted by the bus station as a node.After the establishment of the network.The static topological structure of the network model is analyzed,such as the degree,degree distribution,the shortest path,clustering coefficient,and betweenness,which are compared with the characteristics of the domestic urban traffic network.And use random attack method and deliberate attack method to attack two kinds of network model,in the attack,observe the changes of the Degree of network,average shortest path,network density,average clustering coefficient.Finally,evaluate the global network efficiency of the two networks,calculate the network efficiency of two network models,and optimize the recommendations from four aspects of public transport line,site,bus system and road.Finally,make the summary and prospect of the paper.Through the above analysis we can find that,Harbin bus line network has smaller average shortest path and smaller average clustering coefficient,and the whole network has scale-free property,belongs to scale-free network;Harbin bus transfer network has smaller average shortest path and larger average clustering coefficient,the degree distribution assumes exponential distribution,and the whole network has small-world characteristics,belonging to the small-world network;The robustness of two network models under random attack is stronger than the network robustness under deliberate attack,and the public transport line network;In the evaluation of the efficiency of public transport network,the calculation results show that the global network efficiency of bus line network is higher than the global network efficiency of bus transfer network.Combined with the above research results,this paper puts forward some policy suggestions for the future optimization of Harbin public transportation system.In this paper,through the application and research results of complex network in the Harbin bus network,it can intuitively reflect the characteristics of Harbin public transport network and shortcomings.Summarize the analysis results and combines the research contents and the actual situation,put forward the effective suggestion for the city bus development in Harbin,and put forward the prospect for the future research.