Polarization and echo chambers in Reddit's political discourse
Daniele Cirulli, Antonio Desiderio, Giulio Cimini, and Fabio Saracco
如今，政治辩论主要发生在在线社交媒体上，选举期间更是放大了意识形态的参与度。Reddit通常被认为比Twitter或Facebook等平台更能抵抗极化和回音室效应。在此，我们通过对2016年美国总统选举的案例研究来挑战这一假设。我们使用统计验证技术，根据用户基础和新闻消费情况提取意识形态不同的子版块社区，并以此分析政治辩论的动态。因此，我们在基于互动和基于主题的社区中都揭示了明显的极化现象，形成了民主党、保守党和被封禁的子版块集群。选举期间加剧了跨群体参与，使被封禁内容和保守派内容趋于一致，并减少了群体内的语言多样性。总体而言，我们将Reddit描述为一个以回音室存在为特征的极化环境，强调网络验证是识别在线社交媒体上行为和互动模式的关键方法。
Political debate nowadays takes place mainly on online social media, with election periods amplifying ideological engagement. Reddit is generally considered more resistant to polarization and echo chamber effects than platforms like Twitter or Facebook. Here, we challenge this assumption through a case study across the 2016 US presidential election. We use statistical validation techniques to extract ideologically distinct communities of subreddits, in terms of their contributing user base and n...
