*Vertices 4
1 "中国石油大学学报" 0.0 0.0 0.0 x_fact 6.476484 y_fact 12.181958
2 "测井技术" 0.0 0.0 0.0 x_fact 1.542020 y_fact 7.324595
3 "石油学报" 0.0 0.0 0.0 x_fact 4.934464 y_fact 20.431766
4 "石油勘探与开发" 0.0 0.0 0.0 x_fact 9.946029 y_fact 60.061681
*Matrix 
0.000000 0.384888 0.481222 0.373235 
0.384888 0.000000 0.000000 0.000000 
0.481222 0.000000 0.000000 0.379201 
0.373235 0.000000 0.379201 0.000000