算法来自论文：Fast unfolding of communities in large networks 是一种快速的非重叠的社团划分算法 使用说明，直接调用BGLL函数，参数传入Graph类型的变量就可以得到结果，返回值第一个是所返回的社区结果，第二个是所有节点对应的社区号。

Network science is becoming an increasingly valuable skill for both researchers and data scientists. Tools originally developed by sociologists and other researchers working with pen and paper have seen a resurgence as online platforms and social networks create huge datasets and advances in computer hardware make it feasible to analyze those data sets.