*Vertices 3
1 "石油学报石油加工" 0.0 0.0 0.0 x_fact 11.805556 y_fact 30.902778
2 "炼油技术与工程" 0.0 0.0 0.0 x_fact 15.625000 y_fact 32.986111
3 "石油炼制与化工" 0.0 0.0 0.0 x_fact 10.069444 y_fact 36.111111
*Matrix 
0.000000 0.450671 0.622648 
0.450671 0.000000 0.745843 
0.622648 0.745843 0.000000