*Vertices 5
1 "昆虫知识" 0.0 0.0 0.0 x_fact 2.669039 y_fact 25.978648
2 "北京林业大学学报" 0.0 0.0 0.0 x_fact 5.693950 y_fact 21.886121
3 "竹子研究汇刊" 0.0 0.0 0.0 x_fact 1.067616 y_fact 8.896797
4 "西南林学院学报" 0.0 0.0 0.0 x_fact 11.032028 y_fact 14.768683
5 "林业科学" 0.0 0.0 0.0 x_fact 9.252669 y_fact 28.469751
*Matrix 
0.000000 0.000000 0.000000 0.367203 0.000000 
0.000000 0.000000 0.000000 0.481070 0.532758 
0.000000 0.000000 0.000000 0.406691 0.275329 
0.367203 0.481070 0.406691 0.000000 0.763999 
0.000000 0.532758 0.275329 0.763999 0.000000