Figure 2
From: Robustness of Interrelated Traffic Networks to Cascading Failures
Interrelated random network model with connectivity lines and dependency chains.
Suppose that there are six nodes in the initial network B at t = 0. Select two groups of nodes (B1 and B2 as chain 1; B4, B5 and B6 as chain 2) and add their corresponding nodes (S1, S2, S4, S5 and S6) at t = 1. Here the nodes of S1, S2, S4, S5 and S6 constitute network S. Connect these new nodes of each group with the dependent chains as the new network S. Nodes S1 and S2 are selected to be chain 1; nodes S4, S5 and S6 are selected to be chain 2. Both networks are coupled by interconnected links of corresponding nodes from both networks, e.g., the arc of B1 and S1. tB, tBS and tS are the values of spending time passing two connecting nodes.
