BBS虚拟社区的演化规律探索及仿真

结合复杂网络理论对BBS中虚拟社区网络的演化规律进行了研究.首先,通过BBS版块的数据信息构建有向虚拟社区网络,研究了网络拓扑结构特性的演化,包括新增结点数和边数、度分布的幂指数、网络结构熵等随时间变化的规律,发现网络从"有序"到"无序"再到"稳定有序"的变化过程,并且在此类社区网络中存在富人俱乐部现象.然后,基于BBS版块虚拟社区的演化规律,提出了一种虚拟社区网络构造模型.该模型方法的仿真结果与真实虚拟社区网络演化特性相符,在一定程度上能解释虚拟社区的演化规律,具有很强的实际意义.

Evolution of BBS virtual community and its simulation

Since complex networks have been extensively studied, we introduced the complex network theory to study the virtual community network evolution of the BBS. Firstly, we built the directed virtual community network through data information in BBS plate, and then studied the evolution of network topology characteristics with time, including the addition of the number of nodes and edges, power-law index of network's degree distribution and network's structural entropy. We discovered that evolution process of the network is from "orderly" to "disorderly" and then to "stable and orderly" state, and the existence of rich-club phenomenon in the community network. Then, based on evolution of virtual communities in the BBS plate, we proposed a virtual community network construction model. Simulation results show that its performance is similar to that of the virtual community network in BBS, which can explain the evolution of virtual communities to some extent, and is consequently of strong practical significance.