Evolution Characteristics of Advanced Nonferrous Metal Industry Patent Cooperation Network in China from the Perspective of Multilayer Network

Table 2

The degree centrality and betweenness centrality of the whole patent cooperation network of the advanced nonferrous metal industry.

Applicant	Degree centrality	Applicant	Betweenness centrality
State Grid Corp.	346	State Grid Corp.	590711.80
China Petrochemical Corporation Limited	55	PetroChina Co., Ltd.	213672.42
Central South University	55	Tsinghua University	178997.21
Shanghai Jiao Tong University	49	Shanghai Jiao Tong University	172177.20
Tsinghua University	46	Central South University	154672.13
University of Science and Technology Beijing	39	China Petrochemical Corporation Limited	143446.67
Northeastern University	34	University of Science and Technology Beijing	130471.53
Zhejiang University	32	Baoshan Iron and Steel Co., Ltd	129023.57
State Grid Smart Grid Research Institute	31	Xi’an Jiaotong University	92493.06
PetroChina Co., Ltd.	30	Peking University	83922.18