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在线社会网络中信息的传播范围为其子网,称为信息传播网络。本文利用新浪微博真实数据研究信息传播网络的结构及演化特征,包括网络的循环结构、信息传播的路径长度以及信息传播网络的异质性等。结果表明,信息传播网络通常具有接近树状的结构,信息传播路径的长度与网络大小无关。信息传播网络的异质性特征在演化过程中的波动是由于受到不同传播类型的影响,从而可以根据其波动情况分析网络中信息传播的特征。
The spread of information in online social networks is its subnet, called the information dissemination network. In this paper, we use the real data of Sina Weibo to study the structure and evolvement characteristics of information dissemination network, including the recycle structure of the network, the path length of information dissemination and the heterogeneity of information dissemination network. The results show that the information dissemination network usually has a tree structure, and the length of the information propagation path has nothing to do with the size of the network. The heterogeneity of information dissemination network fluctuates in the process of evolution due to different types of transmission, so that the characteristics of information dissemination in network can be analyzed according to its fluctuation.