世界海运网络异质性研究

Basing on the container shipping routes and ports data from 17 major liner companies, a global shipping network was developed. Topological structure of shipping network was analyzed using complex network theory. The results of degree and degree distribution, clustering coefficient, average path length and betweenness show that, shipping network was a scale-free network with clustering feature and small-world feature, which has hierarchical structure. Lorenz curves and Gini coefficient which are used to measure equality of income distribution in economics were applied to quantitatively analyze heterogeneity of global shipping network. The Gini coefficient of global shipping network was 0.554, which indicated the heterogeneity level of the network was very high.