社交网络中一些点是中枢点，这些点在社交网络中占有重要地位，但是计算结点连接度的复杂度比较高，这篇论文主要做了改进算法效率的工作-Social network is the central point of some points, these points in the social network plays an important role, but the computing nodes connected relatively high degree of complexity, this paper mainly done to improve the working efficiency of the algorithm