Figure 3
From: Understanding coupling dynamics of public transportation networks
Pearson Correlation Coefficient (PCC) between coupling strength and three indexes. PCC between coupling strength and speed ratio (left column), PCC between coupling strength and average trip distance (middle column), and PCC between coupling strength and fraction of travelers from ordinary zones (right column) for SDNs with destinations at (a)–(c) a commercial zone, (d)–(f) a transportation hub zone and (g)–(i) a residential zone. Normalized parameters are denoted \(\lambda^{\mathrm{norm}}\), \(\beta^{\mathrm{norm}}\), \(d^{\mathrm{norm}}\), and \(p^{\mathrm{norm}}\). Blue lines denote the regression functions