文章基本信息

标题：Content Sharing in a Social Broadcasting Environment: Evidence from Twitter
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作者：Shi, Zhan ; Rui, Huaxia ; Whinston, Andrew B 等
期刊名称：Management Information Systems Quarterly
出版年度：2014
卷号：38
期号：1
页码：123-142
出版社：Association for Information Systems
摘要：The rise of social broadcasting technologies has greatly facilitated open access to information worldwide, not only by powering decentralized information production and consumption, but also by expediting information diffusion through social interactions like content sharing. Voluntary information sharing by users in the context of Twitter, the predominant social broadcasting site, is studied by modeling both the technology and user behavior. A detailed data set about the official content-sharing function on Twitter, called retweet, is collected and the statistical relationships between users’ social network characteristics and their retweeting acts are documented. A two-stage consumption-sharing model is then estimated using the conditional maximum likelihood estimatio (MLE) method. The empirical results convincingly support our hypothesis that weak ties (in the form of unidirectional links) are more likely to engage in the social exchange process of content sharing. Specifically, we find that after a median quality tweet (as defined in the sample) is consumed, the likelihood that a unidirectional follower will retweet is 3.1 percentage point higher than the likelihood that a bidirectional follower will do so.
关键词：Content sharing; social broadcasting; information diffusion; Twitter; weak tie