社会网络分析SNA

最短路径: a path that starts at u and ends at v with the lowest  total link weight. 距离: the  lowest  total link weight between two nodes u and v in a graph. 网络直径:网络中最长的最短路径距离。要考虑权重  密度:指的是一个图中各个点之间联络的紧密程度

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