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Automatic Extraction of Causal Relations from Text using Linguistically Informed Deep Neural Networks

机译:使用语言知悉的深度神经网络从文本中自动提取因果关系

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In this paper we have proposed a linguistically informed recursive neural network architecture for automatic extraction of cause-effect relations from text. These relations can be expressed in arbitrarily complex ways. The architecture uses word level embeddings and other linguistic features to detect causal events and their effects mentioned within a sentence. The extracted events and their relations are used to build a causal-graph after clustering and appropriate generalization, which is then used for predictive purposes. We have evaluated the performance of the proposed extraction model with respect to two baseline systems,one a rule-based classifier, and the other a conditional random field (CRF) based supervised model. We have also compared our results with related work reported in the past by other authors on SEMEVAL data set, and found that the proposed bidirectional LSTM model enhanced with an additional linguistic layer performs better. We have also worked extensively on creating new annotated datasets from publicly available data, which we are willing to share with the community.
机译:在本文中,我们提出了一种语言学上的递归神经网络体系结构,用于从文本中自动提取因果关系。这些关系可以用任意复杂的方式表达。该体系结构使用单词级嵌入和其他语言功能来检测因果事件及其在句子中提到的影响。在聚类和适当的概括之后,提取的事件及其关系用于构建因果图,然后将其用于预测目的。我们已经针对两个基线系统(一个基于规则的分类器,另一个基于条件随机场(CRF)的监督模型)评估了所提出的提取模型的性能。我们还将我们的结果与其他作者过去在SEMEVAL数据集上报告的相关工作进行了比较,发现采用附加语言层增强的双向LSTM模型的性能更好。我们还广泛地致力于从公开可用的数据中创建新的带注释的数据集,我们愿意与社区共享这些数据集。

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