论证(复杂分析)
利用
事件(粒子物理)
计算机科学
人工智能
理解力
判决
阅读(过程)
自然语言处理
机器学习
语言学
计算机安全
量子力学
生物化学
物理
哲学
化学
程序设计语言
作者
Jingcong Tao,Youcheng Pan,Xinyu Li,Baotian Hu,Weihua Peng,Cuiyun Han,Xiaolong Wang
标识
DOI:10.1109/icassp43922.2022.9746923
摘要
Extracting arguments for the pre-defined roles is a crucial step for event extraction. Recently, there are some insightful works that view it as a machine reading comprehension problem and achieve significant progress. However, most of them need multi-turns to extract the arguments of each role independently, which ignores the relationships among roles in the same event. To alleviate this problem, we propose a novel Multi-Role Argument Extraction method named MRAE which can exploit the relationship of event roles by extracting all arguments for an event simultaneously. To force MRAE to locate more arguments accurately, we propose an argument match optimization loss based on the minimum risk training to exploit sentence-level F1 score. We conduct experiments on the widely used ACE2005 dataset. The experimental results demonstrate that MRAE outperforms the competitor methods by at least +1.2% F1 score on argument extraction, and also shows superiority on data scarce scenarios.
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