*Vertices 4
1 "中国医院药学杂志" 0.0 0.0 0.0 x_fact 5.244755 y_fact 25.524476
2 "中国药房" 0.0 0.0 0.0 x_fact 9.965035 y_fact 29.895105
3 "药物不良反应杂志" 0.0 0.0 0.0 x_fact 5.594406 y_fact 11.188811
4 "医药导报" 0.0 0.0 0.0 x_fact 23.951049 y_fact 33.391608
*Matrix 
0.000000 0.441501 0.431691 0.867182 
0.441501 0.000000 0.415706 0.597827 
0.431691 0.415706 0.000000 0.647380 
0.867182 0.597827 0.647380 0.000000