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Identifying While Learning for Document Event Causality Identification

Computing Research Repository (CoRR)(2024)

Cited 0|Views54
Abstract
Event Causality Identification (ECI) aims to detect whether there exists acausal relation between two events in a document. Existing studies adopt a kindof identifying after learning paradigm, where events' representations are firstlearned and then used for the identification. Furthermore, they mainly focus onthe causality existence, but ignoring causal direction. In this paper, we takecare of the causal direction and propose a new identifying while learning modefor the ECI task. We argue that a few causal relations can be easily identifiedwith high confidence, and the directionality and structure of these identifiedcausalities can be utilized to update events' representations for boosting nextround of causality identification. To this end, this paper designs an*iterative learning and identifying framework*: In each iteration, we constructan event causality graph, on which events' causal structure representations areupdated for boosting causal identification. Experiments on two public datasetsshow that our approach outperforms the state-of-the-art algorithms in bothevaluations for causality existence identification and directionidentification.
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要点】:本文提出了一个迭代学习和识别框架,用于在文档事件因果性识别任务中同时学习事件表示和因果方向。

方法】:该方法采用了迭代的方式,通过构建事件因果性图,并在每次迭代中更新事件因果结构表示。

实验】:在两个公共数据集上进行的实验表明,该方法在因果性存在和方向识别两个评估指标上均优于现有先进算法。