摘要
针对目前共词分析中词汇遴选阶段存在的问题和共词分析中的词汇遴选环节,讨论了影响词汇遴选效果的众多因素,并就如何选取词汇集合提出了假设和验证分析,最终确定了根据词频覆盖文献区间和高频词个数来遴选词汇的方法,但该方法对大规模数据集的适用性还有待完善。
After the factors that influence the selection of words were analyzed according to the problems in selec-tion of words for co-word analysis, a hypothesis for how to select the word sets with its verification analysis was pro-posed, the method for selecting words was thus decided according to the word frequency-covered literature area and the number of high frequency words. However, its practical use in large data sets needs to be further improved.
出处
《中华医学图书情报杂志》
CAS
2016年第4期1-6,共6页
Chinese Journal of Medical Library and Information Science
基金
国家自然科学基金"基于语义的医学领域前沿知识发现及演化机制研究"(71303259)
北京协和医学院协和青年基金项目"基于TOPSIS-Benchmarking模型的医学学科科技影响力评价研究"(3332015084)
中国医学科学院医学信息研究所中央级公益性科研院所基本科研业务费"基础医学高层次人才评价研究"(14R0103)
关键词
共词分析
词汇遴选
文献计量
Co-word analysis
Selection of words
Bibliometrics
