Who says what to whom on twitter
Who says what to whom on twitter
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DOI：
10.1145/1963405.1963504
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发表时间：
2011-03
期刊：
影响因子：
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通讯作者：
Shaomei Wu;Jake M. Hofman;Winter A. Mason;D. Watts
中科院分区：
文献类型：
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作者：
Shaomei Wu;Jake M. Hofman;Winter A. Mason;D. Watts
我们在微博服务Twitter的背景下，研究了媒体传播研究中关于信息的生产、流动和消费的几个长期存在的问题。为了做到这一点，我们利用Twitter最近推出的一项名为“列表”的功能来区分精英用户--我们指的是名人、博客作者、媒体机构和其他正式组织的代表--和普通用户。基于这种分类，我们发现Twitter上的注意力非常集中，大约50%的URL消费是由20K精英用户产生的，媒体产生的信息最多，但名人是最受关注的。我们还发现在不同的类别中有显著的同源性：名人听名人的话，而博客作者听博客作者的话，等等；然而，一般来说，博客作者比其他类别转播更多的信息。接下来，我们重新审视经典的沟通“两步流”理论，在Twitter上找到了相当多的支持。第三，我们发现，由不同类别的用户广播的URL或包含不同类型内容的URL呈现出系统不同的寿命。最后，我们考察了不同用户类别对不同新闻话题的关注度。
We study several longstanding questions in media communications research, in the context of the microblogging service Twitter, regarding the production, flow, and consumption of information. To do so, we exploit a recently introduced feature of Twitter known as "lists" to distinguish between elite users - by which we mean celebrities, bloggers, and representatives of media outlets and other formal organizations - and ordinary users. Based on this classification, we find a striking concentration of attention on Twitter, in that roughly 50% of URLs consumed are generated by just 20K elite users, where the media produces the most information, but celebrities are the most followed. We also find significant homophily within categories: celebrities listen to celebrities, while bloggers listen to bloggers etc; however, bloggers in general rebroadcast more information than the other categories. Next we re-examine the classical "two-step flow" theory of communications, finding considerable support for it on Twitter. Third, we find that URLs broadcast by different categories of users or containing different types of content exhibit systematically different lifespans. And finally, we examine the attention paid by the different user categories to different news topics.