*Vertices 4
1 "中华内科杂志" 0.0 0.0 0.0 x_fact 6.437768 y_fact 18.884120
2 "中华消化杂志" 0.0 0.0 0.0 x_fact 12.231760 y_fact 26.609442
3 "中华医学杂志" 0.0 0.0 0.0 x_fact 8.798283 y_fact 42.489270
4 "胃肠病学" 0.0 0.0 0.0 x_fact 9.871245 y_fact 12.017167
*Matrix 
0.000000 0.491611 0.425711 0.393036 
0.491611 0.000000 0.337440 0.993338 
0.425711 0.337440 0.000000 0.320056 
0.393036 0.993338 0.320056 0.000000