*Vertices 4
1 "大庆石油学院学报" 0.0 0.0 0.0 x_fact 2.629931 y_fact 10.582342
2 "测井技术" 0.0 0.0 0.0 x_fact 1.440200 y_fact 8.703820
3 "石油学报" 0.0 0.0 0.0 x_fact 4.383219 y_fact 24.859111
4 "石油勘探与开发" 0.0 0.0 0.0 x_fact 3.193488 y_fact 55.854728
*Matrix 
0.000000 0.000000 0.000000 0.000000 
0.000000 0.000000 0.000000 0.000000 
0.000000 0.000000 0.000000 0.242007 
0.000000 0.000000 0.242007 0.000000