论文标题
在社交媒体上共享的真实和虚假谣言的机制：集体智慧或牛群行为？
Mechanisms of True and False Rumor Sharing in Social Media: Collective Intelligence or Herd Behavior?
论文作者
论文摘要
社交媒体平台传播了大量的在线内容，包括真实的谣言，尤其是虚假的谣言。以前的文献研究了离线谣言的传播，但需要进行更多的研究来了解在线谣言的传播。在本文中，我们研究了终生和人群效应在社交媒体共享行为中的作用。基于126,301个Twitter级联，我们发现共享行为的特征是生命周期和人群效应，这些效应解释了真实谣言而不是虚假谣言的差异。所有其他同等的东西，我们发现寿命更长与共享活动较少有关，但是分享的减少比真实的谣言更大。因此，生命周期是一个重要的决定因素，解释了为什么虚假谣言消失了。此外，我们发现虚假的谣言的传播是放牧倾向（而不是集体智慧）的特征，在更大的转推深度中，虚假谣言的传播变得越来越繁多。这些发现解释了真和虚假谣言的扩散动力学的差异，并进一步为社交媒体平台带来了实际含义。
Social media platforms disseminate extensive volumes of online content, including true and, in particular, false rumors. Previous literature has studied the diffusion of offline rumors, yet more research is needed to understand the diffusion of online rumors. In this paper, we examine the role of lifetime and crowd effects in social media sharing behavior for true vs. false rumors. Based on 126,301 Twitter cascades, we find that the sharing behavior is characterized by lifetime and crowd effects that explain differences in the spread of true as opposed to false rumors. All else equal, we find that a longer lifetime is associated with less sharing activities, yet the reduction in sharing is larger for false than for true rumors. Hence, lifetime is an important determinant explaining why false rumors die out. Furthermore, we find that the spread of false rumors is characterized by herding tendencies (rather than collective intelligence), whereby the spread of false rumors becomes proliferated at a larger retweet depth. These findings explain differences in the diffusion dynamics of true and false rumors and further offer practical implications for social media platforms.
