*Vertices 3
1 "癌症" 0.0 0.0 0.0 x_fact 7.345576 y_fact 28.213689
2 "中国肿瘤临床" 0.0 0.0 0.0 x_fact 20.367279 y_fact 40.400668
3 "中华肿瘤杂志" 0.0 0.0 0.0 x_fact 5.175292 y_fact 31.385643
*Matrix 
0.000000 0.526323 0.379016 
0.526323 0.000000 0.567269 
0.379016 0.567269 0.000000