Table 2 Macro graph metrics of the top 100 keywords by cities

Total edges

2706

1390

4096

1904

Maximum geodesic distance

3

5

2

4

Average geodesic distance

1.742

2.084

1.5704

1.9012

Graph density

0.273

0.140

0.413

0.192

Average degree

27.060

27.800

81.920

38.080

Average betweenness centrality

37.630

107.300

58.040

91.120

Average degree closeness centrality

0.006

0.005

0.006

0.005

Average eigenvector centrality

0.010

0.010

0.010

0.010

Average clustering coefficient

0.522

0.431

0.624

0.461