GN算法是一种凝聚型的社区结构发现算法。该算法根据网络中社区内部高内聚、社区之间低内聚的特点，逐步去除社区之间的边，取得相对内聚的社区结构。GN算法是一种分裂方法[]。其基本思想是不断的从网络中移除介数最大的边。-GN algorithm is a cohesive community structure discovery algorithm. Based on the characteristics of high cohesion within the community and low cohesion between communities, the algorithm gradually removes the community between the communities and obtains a relatively cohesive community structure. The GN algorithm is a splitting method []. The basic idea is to constantly remove the largest edge　the network.