How Public Opinion Forms
How Public Opinion Forms
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DOI：
10.1007/978-3-540-92185-1_39
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发表时间：
2008-12
期刊：
影响因子：
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通讯作者：
Fang Wu;B. Huberman
中科院分区：
文献类型：
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作者：
Fang Wu;B. Huberman
在互联网上不断发布的无数观点、新闻和产品评论中，没有哪个方面能比网络带来的大量内容创造更明显了。考虑到它们的重要性，我们分析了它们在许多情况下的时间演变。我们发现，虽然对先前观点的无知会导致社区中意见范围的统一抽样，但将先前观点暴露给潜在审稿人会导致趋势跟随过程，从而导致越来越极端的观点表达。此外，当一种观点的表达是昂贵的，以前的观点是已知的，选择偏见软化了极端的观点，因为人们表现出一种倾向，说不同于以前的观点。这些发现不仅是可靠的，而且还提供了从大众中提取特定类型意见的简单程序。
No aspect of the massive participation in content creation that the web enables is more evident than in the countless number of opinions, news and product reviews that are constantly posted on the Internet. Given their importance we have analyzed their temporal evolution in a number of scenarios. We have found that while ignorance of previous views leads to a uniform sampling of the range of opinions among a community, exposure of previous opinions to potential reviewers induces a trend following process which leads to the expression of increasingly extreme views. Moreover, when the expression of an opinion is costly and previous views are known, a selection bias softens the extreme views, as people exhibit a tendency to speak out differently from previous opinions. These findings are not only robust but also suggest simple procedures to extract given types of opinions from the population at large.