*Vertices 3
1 "湖南师范大学自然科学学报" 0.0 0.0 0.0 x_fact 1.920439 y_fact 3.703704
2 "中国农业科学" 0.0 0.0 0.0 x_fact 18.244170 y_fact 49.245542
3 "作物学报" 0.0 0.0 0.0 x_fact 16.323731 y_fact 47.050754
*Matrix 
0.000000 0.608716 0.556337 
0.608716 0.000000 0.846813 
0.556337 0.846813 0.000000