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术语信息提取工具:生物医学文献中的无监督术语挖掘与分析

TermInformer: unsupervised term mining and analysis in biomedical literature.

作者信息

Tiwari Prayag, Uprety Sagar, Dehdashti Shahram, Hossain M Shamim

机构信息

Department of Information Engineering, University of Padova, Padua, Italy.

The Open University, London, UK.

出版信息

Neural Comput Appl. 2020 Sep 16:1-14. doi: 10.1007/s00521-020-05335-2.

Abstract

Terminology is the most basic information that researchers and literature analysis systems need to understand. Mining terms and revealing the semantic relationships between terms can help biomedical researchers find solutions to some major health problems and motivate researchers to explore innovative biomedical research issues. However, how to mine terms from biomedical literature remains a challenge. At present, the research on text segmentation in natural language processing (NLP) technology has not been well applied in the biomedical field. Named entity recognition models usually require a large amount of training corpus, and the types of entities that the model can recognize are limited. Besides, dictionary-based methods mainly use pre-established vocabularies to match the text. However, this method can only match terms in a specific field, and the process of collecting terms is time-consuming and labour-intensive. Many scenarios faced in the field of biomedical research are unsupervised, i.e. unlabelled corpora, and the system may not have much prior knowledge. This paper proposes the TermInformer project, which aims to mine the meaning of terms in an open fashion by calculating terms and find solutions to some of the significant problems in our society. We propose an unsupervised method that can automatically mine terms in the text without relying on external resources. Our method can generally be applied to any document data. Combined with the word vector training algorithm, we can obtain reusable term embeddings, which can be used in any NLP downstream application. This paper compares term embeddings with existing word embeddings. The results show that our method can better reflect the semantic relationship between terms. Finally, we use the proposed method to find potential factors and treatments for lung cancer, breast cancer, and coronavirus.

摘要

术语是研究人员和文献分析系统需要理解的最基本信息。挖掘术语并揭示术语之间的语义关系有助于生物医学研究人员找到一些重大健康问题的解决方案,并激励研究人员探索创新性的生物医学研究问题。然而,如何从生物医学文献中挖掘术语仍然是一个挑战。目前,自然语言处理(NLP)技术中的文本分割研究在生物医学领域尚未得到很好的应用。命名实体识别模型通常需要大量的训练语料库,并且模型能够识别的实体类型有限。此外,基于字典的方法主要使用预先建立的词汇表来匹配文本。然而,这种方法只能匹配特定领域中的术语,并且收集术语的过程既耗时又费力。生物医学研究领域面临的许多场景是无监督的,即未标记的语料库,并且系统可能没有太多先验知识。本文提出了TermInformer项目,其旨在通过计算术语以开放的方式挖掘术语的含义,并找到解决我们社会中一些重大问题的方法。我们提出了一种无监督方法,该方法可以在不依赖外部资源的情况下自动挖掘文本中的术语。我们的方法通常可以应用于任何文档数据。结合词向量训练算法,我们可以获得可重复使用的术语嵌入,其可用于任何NLP下游应用。本文将术语嵌入与现有的词嵌入进行了比较。结果表明,我们的方法能够更好地反映术语之间的语义关系。最后,我们使用所提出的方法来寻找肺癌、乳腺癌和冠状病毒的潜在因素及治疗方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0e22/7494250/8c85d79bf7d4/521_2020_5335_Fig1_HTML.jpg

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