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arXiv 2007.03860cs.CL
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基于背景知识的多维端到端短语识别算法研究

Research on multi-dimensional end-to-end phrase recognition algorithm based on background knowledge

Huazhong University of Science and Technology(华中科技大学);School of Computer Science and Technology, Huazhong University of Science and Technology(华中科技大学计算机科学与技术学院)

Zheng Li, Gang Tu, Guang Liu, Zhi-Qiang Zhan, Yi-Jian Liu

摘要:

目前,实体识别和依赖分析多采用基于监督学习的深度端到端方法。该方法存在两个问题:一是不能引入背景知识;二是不能识别自然语言的多粒度和嵌套特征。针对这些问题,提出了基于短语窗口的标注规则,并设计了相应的多维端到端短语识别算法。该标注规则将句子划分为七种类型的嵌套短语,并指示短语之间的依赖关系。该算法不仅可以引入背景知识,识别句子中的各种嵌套短语,还可以识别短语之间的依赖关系。实验结果表明,该标注规则简单易用,无歧义;匹配算法比传统的端到端算法更符合语法的多粒度和多样性特点。在CPWD数据集上的实验表明,通过引入背景知识,新算法比端到端方法的准确率提高了一个点以上。相应的方法应用于CCL 2018竞赛,并在中国幽默类型识别任务中获得第一名。

英文摘要:

At present, the deep end-to-end method based on supervised learning is used in entity recognition and dependency analysis. There are two problems in this method: firstly, background knowledge cannot be introduced; secondly, multi granularity and nested features of natural language cannot be recognized. In order to solve these problems, the annotation rules based on phrase window are proposed, and the corresponding multi-dimensional end-to-end phrase recognition algorithm is designed. This annotation rule divides sentences into seven types of nested phrases, and indicates the dependency between phrases. The algorithm can not only introduce background knowledge, recognize all kinds of nested phrases in sentences, but also recognize the dependency between phrases. The experimental results show that the annotation rule is easy to use and has no ambiguity; the matching algorithm is more consistent with the multi granularity and diversity characteristics of syntax than the traditional end-to-end algorithm. The experiment on CPWD dataset, by introducing background knowledge, the new algorithm improves the accuracy of the end-to-end method by more than one point. The corresponding method was applied to the CCL 2018 competition and won the first place in the task of Chinese humor type recognition.

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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