Structural robustness of complex network

Researchers have been analyzing network robustness by two approaches, namely network modelling and network analysis. However, there are no consensuses on the use of the network metrics. This paper studies two commonly used network metrics on the study of network robustness, namely average shortest path and diameter, and tries to develop a general principle to measure the network robustness. A metro network, namely Newcastle Metro network, is studied. This paper summarized that the network should be measured by both network disconnectedness and the pre-existing network metric such as average shortest path and diameter to investigate the impact of the loss of a link in the network.