在社交网络上，舆论一边倒需要多久？｜科学60秒
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《环球科学》杂志旗下综合性学术传播与服务平台。
社交网络上的舆论确立能有多快？
埃隆·马斯克（Elon Musk）收购推特案终于落幕，言论自由之争正式“开庭”。
如果这场争论发生在推特上，裁决结果不久就能浮出水面：根据一项发表在《混沌》（Chaos）杂志上的研究，当一个话题在推特上引爆后，用户会迅速找准队伍，站定自己的立场。研究人员在6个月内收集了大约600万条推文，按情绪表达分为“积极”和“消极”两大类，然后集中分析了三个涉及电子产品的话题。
一开始人们的立场并不坚定，占多数的一方优势并不明显，但这种优势会逐渐扩大，然后迅速趋于平稳，其中一方会处于稳定且主导的地位，但也不会就此形成压倒性共识。而一旦公众舆论确立了，就……[查看全文]
Twitter Opinion Quickly Stabilizes
All rise, the Twitter court of public opinion is now in session.
And the next case on the docket will reach a quick verdict. Because public opinion solidifies rapidly on Twitter. That's according to a study in the journal Chaos.
Researchers collected almost 6 million tweets during a six-month period. They sorted the tweets for either positive or negative sentiments, then focused on three topics related to electronics.
At first opinions fluctuated, with one side gaining a slight advantage. This advantage grew gradually and then quickly leveled off, leaving one opinion in a stable and dominant position—but without an overwhelming consensus.
And once public opinion is established, it is...[full transcript]
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Xiong, F. and Liu, Y. (2014) “Opinion formation on social media: An empirical approach,” Chaos: An Interdisciplinary Journal of Nonlinear Science, 24(1), p. 013130.
doi: 10.1063/1.4866011
封面图来源：Unsplash
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