*Vertices 3
1 "系统工程理论与实践" 0.0 0.0 0.0 x_fact 0.946372 y_fact 43.848580
2 "铁道学报" 0.0 0.0 0.0 x_fact 5.678233 y_fact 26.498423
3 "西南交通大学学报" 0.0 0.0 0.0 x_fact 8.201893 y_fact 29.652997
*Matrix 
0.000000 0.000000 0.200077 
0.000000 0.000000 0.432045 
0.200077 0.432045 0.000000