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.