*Vertices 3
1 "中草药" 0.0 0.0 0.0 x_fact 16.029412 y_fact 69.264706
2 "药学学报" 0.0 0.0 0.0 x_fact 4.852941 y_fact 23.088235
3 "中国药物化学杂志" 0.0 0.0 0.0 x_fact 4.411765 y_fact 7.647059
*Matrix 
0.000000 0.485423 0.490675 
0.485423 0.000000 0.719164 
0.490675 0.719164 0.000000