*Vertices 4
1 "中国给水排水" 0.0 0.0 0.0 x_fact 7.166124 y_fact 62.540717
2 "上海环境科学" 0.0 0.0 0.0 x_fact 8.794788 y_fact 11.400651
3 "水处理技术" 0.0 0.0 0.0 x_fact 2.605863 y_fact 20.521173
4 "城市环境与城市生态" 0.0 0.0 0.0 x_fact 3.257329 y_fact 5.537459
*Matrix 
0.000000 0.832345 0.000000 0.478405 
0.832345 0.000000 0.414493 0.816559 
0.000000 0.414493 0.000000 0.000000 
0.478405 0.816559 0.000000 0.000000