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信息传播通过社会关系进行。媒体基于转发等关系形成媒体信息传播网络,网络结构决定信息传播效果。以2014年食品安全微博舆情事件为研究对象,运用社会网络分析深入研究整体网络、子群网络的结构与特征,探讨媒体网络位置与信息传播能力的影响因素。研究结果表明,媒体信息传播网络整体稀疏,呈现无标度网络特征,少数纸质媒体微博和电视媒体微博影响网络结构的稳定性。网络中存在子群现象,且子群内部媒体分布呈地域性特征。媒体信息传播能力与其专业性、权威性及参与度密切相关。
Information dissemination through social relations. The media forms a media information dissemination network based on the relaying and other relations, and the network structure determines the dissemination effect of information. Taking the 2014 food safety microblogging public opinion case as the research object, this paper uses social network analysis to deeply study the structure and characteristics of the overall network and sub-group network, and discusses the influencing factors of the media network location and information dissemination ability. The results show that the media information dissemination network is sparse as a whole, showing the characteristics of scale-free network. A small number of paper media microblogs and TV media microblogging affect the stability of the network structure. Subgroups exist in the network, and the distribution of media within subgroups is regional. Media information dissemination ability is closely related to its professionalism, authority and participation.