*Vertices 4
1 "中华流行病学杂志" 0.0 0.0 0.0 x_fact 0.524476 y_fact 8.857809
2 "中华医院感染学杂志" 0.0 0.0 0.0 x_fact 0.874126 y_fact 71.445221
3 "实用预防医学" 0.0 0.0 0.0 x_fact 6.177156 y_fact 11.421911
4 "中国卫生检验杂志" 0.0 0.0 0.0 x_fact 2.272727 y_fact 8.275058
*Matrix 
0.000000 0.000000 0.401939 0.280458 
0.000000 0.000000 0.361666 0.000000 
0.401939 0.361666 0.000000 0.383817 
0.280458 0.000000 0.383817 0.000000