*Vertices 3
1 "中国沙漠" 0.0 0.0 0.0 x_fact 0.151745 y_fact 60.242792
2 "内蒙古农业大学学报" 0.0 0.0 0.0 x_fact 3.490137 y_fact 7.132018
3 "食品科学" 0.0 0.0 0.0 x_fact 0.151745 y_fact 32.625190
*Matrix 
0.000000 0.449297 0.000000 
0.449297 0.000000 0.347865 
0.000000 0.347865 0.000000