Study of Urban System Spatial Interaction Based on Microblog Data: A Case of Huaihe River Basin, China

Table 1

External connection index and network connectivity.

Name	Ni0	Mi0
Luohe	1.00	291.15
Kaifeng	1.00	203.67
Huainan	0.97	159.24
Bozhou	0.95	120.38
Yangzhou	0.86	−84.64
Fuyang	0.62	−47.69
Xinyang	0.42	−83.31
Lianyungang	0.39	−75.32
Jining	0.32	−74.07
Suzhou	0.23	−86.43
Huaiyin	−0.01	−96.93
Zhumadian	−0.08	−97.96
Suqian	−0.15	−96.90
Heze	−0.16	−98.96
Zhoukou	−0.22	−98.30
Bengbu	−0.25	−1543.59
Xuchang	−0.30	−96.77
Liuan	−0.31	−98.11
Zaozhuang	−0.31	−98.63
Pingdingshan	−0.36	−97.27
Huaibei	−0.50	−95.69
Shangqiu	−0.51	−97.60
Linyi	−0.53	−97.88
Xuzhou	−0.53	−96.98
Yancheng	−0.59	−90.80
Rizhao	−0.60	−99.02