*Vertices 3
1 "中华内科杂志" 0.0 0.0 0.0 x_fact 6.896552 y_fact 42.413793
2 "中华消化杂志" 0.0 0.0 0.0 x_fact 5.172414 y_fact 30.344828
3 "胃肠病学" 0.0 0.0 0.0 x_fact 20.000000 y_fact 27.241379
*Matrix 
0.000000 0.258337 0.413521 
0.258337 0.000000 0.925378 
0.413521 0.925378 0.000000