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zjy3496

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\deqn{B^n=\frac{2B}{n^2-3n+2}}{Bnorm=2*B/(n*n-3*n+2)}, where
\eqn{B^n}{Bnorm} is the normalized, \eqn{B} the raw betweenness, and \eqn{n}
is the number of vertices in the graph.}


Õâ¶Î´úÂëÀïÃæ deqn ºÍ eqn ·Ö±ðÊÇʲôÒâ˼ѽ£¿


The vertex betweenness of vertex \eqn{v}{\code{v}} is defined by

\deqn{\sum_{i\ne j, i\ne v, j\ne v} g_{ivj}/g_{ij}}{sum( g_ivj / g_ij,
i!=j,i!=v,j!=v)}

The edge betweenness of edge \eqn{e}{\code{e}} is defined by

\deqn{\sum_{i\ne j} g{iej}/g_{ij}.}{sum( g_iej / g_ij, i!=j).}

\code{betweenness} calculates vertex betweenness, \code{edge_betweenness}
calculates edge betweenness.

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