[目的/意义]关键词是检索期刊论文的重要入口之一,其标注质量直接影响检索效果。规范、科学的关键词,不仅可以提高论文的检准率,而且可以更准确地揭示论文的主题内容。[方法/过程]利用语言学的直接成分分析法和统计学的分析方法,以近5年图书情报学科"基于……的……"论题的3 636篇论文的题录为数据,通过对论题要素的识别与标注,并与作者标注的关键词进行对比分析,判断作者标注关键词所反映论文研究内容的科学性。同时将作者标注的关键词与领域主题词表进行比对,判断其关键词标注的规范性。[结果/结论]通过对比与统计分析后得出如下结论:①37.16%的论文关键词存在与论题要素不一致,不能准确描述论文研究主题内容的情况;②96.88%的论文关键词存在不同程度的标注不规范情况。在此基础上,提出关键词规范选取的策略。
[Purpose/Significance] Keyword is one of the important entrances to retrieve journal papers, and its labeling quality directly affects the retrieval effect. Standardized and scientific keywords can not only improve the precision ratio of papers, but also reveal the subject contents of papers more accurately. [Method/Process] This paper used immediate constituent analysis in linguistics and analysis methods in statistics, taking the titles of 3636 "Based … on…" papers in library and information science subject in the past five years as data, identifying and labeling the elements of paper titles, and comparing them with the keywords labeled by the authors, to judge the scientific validity of the research contents of the paper reflected by the keywords labeled by the authors. At the same time, the keywords labeled by the author was compared with domain subject headings to judge the standardization of keyword labeling. [Result/Conclusion] Through the comparison and statistical analysis, it is found that, ①37.16% of the paper keywords are inconsistent with the elements of paper titles, which can not accurately describe the research topic contents of the papers; ②96.88% of the paper keywords have different degrees of non-standard labeling. On this basis, this paper puts forward the strategies for the selection of keywords.
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