Encoding Heterogeneous Social and Political Context for Entity Stance Prediction

• URL: http://arxiv.org/abs/2108.03881v1
• Date: Mon, 9 Aug 2021 08:59:43 GMT
• Title: Encoding Heterogeneous Social and Political Context for Entity Stance Prediction
• Authors: Shangbin Feng, Zilong Chen, Peisheng Yu, Minnan Luo
• Abstract summary: We propose the novel task of entity stance prediction. We retrieve facts from Wikipedia about social entities regarding contemporary U.S. politics. We then annotate social entities' stances towards political ideologies with the help of domain experts.
• Score: 7.477393857078695
• License: http://creativecommons.org/licenses/by-sa/4.0/
• Abstract: Political stance detection has become an important task due to the increasingly polarized political ideologies. Most existing works focus on identifying perspectives in news articles or social media posts, while social entities, such as individuals and organizations, produce these texts and actually take stances. In this paper, we propose the novel task of entity stance prediction, which aims to predict entities' stances given their social and political context. Specifically, we retrieve facts from Wikipedia about social entities regarding contemporary U.S. politics. We then annotate social entities' stances towards political ideologies with the help of domain experts. After defining the task of entity stance prediction, we propose a graph-based solution, which constructs a heterogeneous information network from collected facts and adopts gated relational graph convolutional networks for representation learning. Our model is then trained with a combination of supervised, self-supervised and unsupervised loss functions, which are motivated by multiple social and political phenomenons. We conduct extensive experiments to compare our method with existing text and graph analysis baselines. Our model achieves highest stance detection accuracy and yields inspiring insights regarding social entity stances. We further conduct ablation study and parameter analysis to study the mechanism and effectiveness of our proposed approach.

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