谁认识这个公式啊
1 _
g = ------ > d ( v , v )
ij n(n-1) - i k s


这里有图片
http://hiphotos.baidu.com/ankang1986/pic/item/2fed344c49ff94f0d62afc6b.jpg


是学校老师让做的一个交通项目时的公式，求网络关键度，他说他忘记了

哪位大哥知道这个公式是什么意思啊

[解决办法]
that 's a very artificial definition. Not sure what it means. But in general,

V = the vertex set, A = the arc set, G = graph,

d_i should relate to distance. v_i means a single vertex in the set.
[解决办法]
Sorry,I don 't know.