arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1506.03022cs.SIcs.CYphysics.soc-ph
收藏

社交网络中的多数错觉

The Majority Illusion in Social Networks

Kristina Lerman, Xiaoran Yan, Xin-Zeng Wu

摘要:

社会行为通常具有传染性,当个体模仿他人的决定和选择时,会在人群中传播。从创新的采用到社会规范和政治运动的出现,各种全球现象都是由于人们遵循简单的地方规则而产生的,比如模仿别人正在做的事情。然而,人们往往缺乏对他人行为的全面了解,必须通过观察他们朋友的行为来估计他们。在某些情况下,底层社交网络的结构可能会极大地扭曲个人的局部观察,使行为在局部看起来比在全球看起来更常见。我们将这种现象的根源追溯到社交网络中的友谊悖论,我们称之为“多数错觉”。由于这种悖论,一种全球罕见的行为可能在许多人的当地社区中系统地过度代表,即,在他们的朋友中。因此,“多数错觉”可能会促进社会传染在网络中的传播,也解释了为什么在社会认知中出现系统性偏见,例如,对危险行为的偏见。使用合成和真实世界的网络,我们探索了“多数错觉”如何依赖于网络结构,并开发了一个统计模型来计算其在网络中的大小。

英文摘要:

Social behaviors are often contagious, spreading through a population as individuals imitate the decisions and choices of others. A variety of global phenomena, from innovation adoption to the emergence of social norms and political movements, arise as a result of people following a simple local rule, such as copy what others are doing. However, individuals often lack global knowledge of the behaviors of others and must estimate them from the observations of their friends' behaviors. In some cases, the structure of the underlying social network can dramatically skew an individual's local observations, making a behavior appear far more common locally than it is globally. We trace the origins of this phenomenon, which we call "the majority illusion," to the friendship paradox in social networks. As a result of this paradox, a behavior that is globally rare may be systematically overrepresented in the local neighborhoods of many people, i.e., among their friends. Thus, the "majority illusion" may facilitate the spread of social contagions in networks and also explain why systematic biases in social perceptions, for example, of risky behavior, arise. Using synthetic and real-world networks, we explore how the "majority illusion" depends on network structure and develop a statistical model to calculate its magnitude in a network.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑