全球航运网络鲁棒性和脆弱性研究

通过对全球航运网络节点度分布、度值相关性和节点度与介数相关性分析发现,度值大的节点优先与度值较大节点连接,度值大的节点介数也较大,因而度值较大的节点对网络影响程度较大.选择度值较大节点为优先攻击目标进行选择删除,随机生成节点序列作为出错目标进行随机删除,进而研究在出错和攻击情况下,全球航运网络聚集系数、平均距离、孤立节点比率和网络效率的变化情况.通过分析发现全球航运网络具有较好的鲁棒性,但网络较脆弱.

Research on robustness and vulnerability of global shipping network

Through analyzing degree distribution, relation between degrees and relation between degree and betweens of global shipping network, the vertex with higher degree is prior to connection with higher node, in general, node with higher degree has higher betweens, so nodes with higher degree affect network more easily. So the node with higher degree was chosen first as the target of attack to be deleted, and the random vertex was chosen as the target of error to be deleted. The change of clustering coefficient, average path lengths, ratio of isolated nodes, and network efficiency under errors and attacks was analyzed, and a conclusion was drawn that the global shipping network is robust but vulnerable.