标题： 从数字足迹预测政治意识形态 显示英文标题

标题： Predicting Political Ideology from Digital Footprints

摘要： 本文提出了一种新方法，可从世界最大在线讨论平台之一的数字足迹预测个人的政治意识形态。 我们从在线讨论平台 Reddit 汇编了一个独特数据集，其中包含约 91,000 名用户的意识形态信息以及他们在超过 190,000 个不同兴趣子论坛中的评论频率记录和评论文本语料库。 应用一系列统计学习方法，我们表明，仅非政治讨论论坛中的活动信息就能非常准确地预测用户的政治意识形态。 根据模型的不同，我们在预测意识形态的经济维度时准确率可达 90.63%，在预测社会维度时准确率可达 82.02%。 相比之下，使用实际评论中的文本特征并未提高预测准确性。 我们的论文强调了揭示的数字行为的重要性，以补充数字化通信中的声明偏好，从而分析人类偏好和行为时使用在线数据的价值。 显示英文摘要

摘要： This paper proposes a new method to predict individual political ideology from digital footprints on one of the world's largest online discussion forum. We compiled a unique data set from the online discussion forum reddit that contains information on the political ideology of around 91,000 users as well as records of their comment frequency and the comments' text corpus in over 190,000 different subforums of interest. Applying a set of statistical learning approaches, we show that information about activity in non-political discussion forums alone, can very accurately predict a user's political ideology. Depending on the model, we are able to predict the economic dimension of ideology with an accuracy of up to 90.63% and the social dimension with and accuracy of up to 82.02%. In comparison, using the textual features from actual comments does not improve predictive accuracy. Our paper highlights the importance of revealed digital behaviour to complement stated preferences from digital communication when analysing human preferences and behaviour using online data.