*Vertices 4
1 "中国公共卫生" 0.0 0.0 0.0 x_fact 4.649891 y_fact 11.816193
2 "中华流行病学杂志" 0.0 0.0 0.0 x_fact 1.477024 y_fact 7.385120
3 "中华医院感染学杂志" 0.0 0.0 0.0 x_fact 0.382932 y_fact 74.343545
4 "疾病控制杂志" 0.0 0.0 0.0 x_fact 5.196937 y_fact 6.455142
*Matrix 
0.000000 0.604904 0.000000 0.657040 
0.604904 0.000000 0.000000 0.928350 
0.000000 0.000000 0.000000 0.234763 
0.657040 0.928350 0.234763 0.000000