arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.11675cs.SIcs.AI
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从符号社会图中学习姿态嵌入

Learning Stance Embeddings from Signed Social Graphs

University of Oxford(牛津大学);Meta;Twitter Cortex(推特Cortex部门)

John Pougué-Biyong, Akshay Gupta, Aria Haghighi, Ahmed El-Kishky

摘要:

社会网络分析中的一个关键挑战是理解图中人们对大量主题的立场或立场。尽管过去的工作已经使用签名图对社交网络中的(不)一致进行了建模,但是这些方法没有对跨一系列相关主题的一致模式进行建模。例如,在一个主题上的分歧可能会使相关主题的分歧(或协议)更有可能。我们提出了立场嵌入模型(SEM),它联合学习嵌入为每个用户和主题在签名的社交图与不同的边缘类型为每个主题。通过联合学习用户和主题嵌入,SEM能够执行冷启动主题立场检测,预测用户对我们尚未观察到他们参与的主题的立场。我们使用我们开源的两个大规模Twitter签名图数据集来证明SEM的有效性。一个数据集,TwitterSG,标签(不)协议使用用户之间的参与通过推文来获得主题信息,签名的边缘。另一个是BirdwatchSG,利用社区对错误信息和误导性内容的报告。在TwitterSG和BirdwatchSG上,SEM显示相对于强基线分别减少了39%和26%的错误。

英文摘要:

A key challenge in social network analysis is understanding the position, or stance, of people in the graph on a large set of topics. While past work has modeled (dis)agreement in social networks using signed graphs, these approaches have not modeled agreement patterns across a range of correlated topics. For instance, disagreement on one topic may make disagreement(or agreement) more likely for related topics. We propose the Stance Embeddings Model(SEM), which jointly learns embeddings for each user and topic in signed social graphs with distinct edge types for each topic. By jointly learning user and topic embeddings, SEM is able to perform cold-start topic stance detection, predicting the stance of a user on topics for which we have not observed their engagement. We demonstrate the effectiveness of SEM using two large-scale Twitter signed graph datasets we open-source. One dataset, TwitterSG, labels (dis)agreements using engagements between users via tweets to derive topic-informed, signed edges. The other, BirdwatchSG, leverages community reports on misinformation and misleading content. On TwitterSG and BirdwatchSG, SEM shows a 39% and 26% error reduction respectively against strong baselines.

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。

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