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arXiv 2408.05545cs.CLcs.AI
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基于多层序列标注的联合生物医学事件抽取

Multi-layer Sequence Labeling-based Joint Biomedical Event Extraction

School of Computer Science and Technology, Soochow University(苏州大学计算机科学与技术学院);Department of Chinese and Bilingual Studies, The Hong Kong Polytechnic University(香港理工大学中文及双语学系)

Gongchi Chen, Pengchao Wu, Jinghang Gu, Longhua Qian, Guodong Zhou

AI总结:

针对生物医学事件抽取现有方法复杂、未有效显式利用触发词信息的问题,提出基于多层序列标注的联合抽取方法MLSL,显式融入候选触发词信息学习交互关系,以简单工作流实现更优的抽取性能。

摘要:

近年来,生物医学事件抽取领域一直以复杂的流水线方法和联合方法为主,这类方法有待简化。此外,现有工作尚未有效显式利用触发词信息。为此,我们提出MLSL——一种基于多层序列标注的联合生物医学事件抽取方法。MLSL无需引入先验知识与复杂结构,还会将候选触发词信息显式融入序列标注过程,以学习触发词与论元角色之间的交互关系。基于此,MLSL仅通过简单工作流就能实现良好的学习效果。大量实验表明,在抽取性能方面,MLSL优于其他现有SOTA(state-of-the-art,当前最优)方法。

英文摘要:

In recent years, biomedical event extraction has been dominated by complicated pipeline and joint methods, which need to be simplified. In addition, existing work has not effectively utilized trigger word information explicitly. Hence, we propose MLSL, a method based on multi-layer sequence labeling for joint biomedical event extraction. MLSL does not introduce prior knowledge and complex structures. Moreover, it explicitly incorporates the information of candidate trigger words into the sequence labeling to learn the interaction relationships between trigger words and argument roles. Based on this, MLSL can learn well with just a simple workflow. Extensive experimentation demonstrates the superiority of MLSL in terms of extraction performance compared to other state-of-the-art methods.

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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