【摘要】 本文以"非典型肺炎"和"甲型H1N1流感"两个传染病作为研究样本,以中国知网(CNKI)数据库中的文献关键词作为语料库来源,基于用户关键词词频统计,并结合人工核查,分析同一概念的同义词和近义词以确立关键词词间的等同关系。目的是了解用户关键词和MeSH主题词之间的差异,分析用户表达偏好和习惯,进而为叙词表维护中的候选词汇选择提供一定的参考。更多还原

【Abstract】 This paper discusses the equivalent relationships of thesaurus based on Key words analysis.It selected "atypical pneumonia" and "Influenza A,H1N1 type" as our study samples.The conceptual terms of thesaurus come from the keywords of papers,which is collected from CNKI.The aim is to acquire the frequency and ratio of keywords and analyze the synonyms of the same concept manually,and then to establish equivalent relationships of the keywords.The purpose is to understand differences between the users’ keywords and subject headings of MeSH,and to analyze users’ preferences and habits.Finally,it provides some reference for the maintenance of thesaurus in selection of candidate words.更多还原