https://blog.csdn.net/u010159842/article/details/80505831
https://www.cnblogs.com/nolonely/p/6262508.html
https://www.qedev.com/bigdata/131841.html spark预估图的节点数
https://blog.csdn.net/weixin_44704845/article/details/102686597 边介数计算详解
https://github.com/johnasbaghi/louvain-modularity 代码
NetworkX系列教程(7)-对graph进行分析 :https://www.cnblogs.com/wushaogui/p/9204797.html