*Vertices 4
1 "中国公共卫生" 0.0 0.0 0.0 x_fact 8.280255 y_fact 34.235669
2 "中华劳动卫生职业病杂志" 0.0 0.0 0.0 x_fact 6.847134 y_fact 17.834395
3 "中国工业医学杂志" 0.0 0.0 0.0 x_fact 17.356688 y_fact 26.751592
4 "环境与职业医学" 0.0 0.0 0.0 x_fact 12.898089 y_fact 21.178344
*Matrix 
0.000000 0.272432 0.284035 0.481544 
0.272432 0.000000 0.908868 0.802352 
0.284035 0.908868 0.000000 0.768975 
0.481544 0.802352 0.768975 0.000000