媒体信息传播网络研究——以食品安全微博舆情为例

Study on the Network of Information Dissemination between Network Media——A Case Study of Food Safety Micro-blog Public Opinion

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 on the platform of microblog disseminates primarily through social ties. Based on the relations among micro-blog media, such as forwarding, information dissemination network forms, whose structure determines the effectiveness of information dissemi- nation. Using social network analysis, the paper explores the structure of whole network and sub-network and the factors that influence media＇ s location and the capability of disseminating information. The study indicates that （ 1 ） the network of information dissemination between network media is sparse and scale-free. The stability of the network is affected by a small number of media, such as paper media microblog, TV media microblog; （2）the phenomenon of subgroup is exhibited in the network, and distribution of media within the sub- group is regional ; （3） media＇ s capability of disseminating information is closely related to its professionalism, authority and participa- tion.