| 基于共词分析法的学科主题演化研究方法的构建 |
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| 引用本文： | 唐果媛.基于共词分析法的学科主题演化研究方法的构建[J].图书情报工作,2017,61(23):100-107. |
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| 作者姓名： | 唐果媛 |
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| 作者单位： | 中国科学院文献情报中心 北京 100190 中国科学院大学 北京 100049 |
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| 摘 要： | 目的/意义]相比于以单纯的关键词统计排序为主的词频分析法，和以文献作为分析对象、需要庞大的引文索引作为基础的共引分析法，共词分析法具有一定的优势。因此，基于共词分析法来研究学科主题演化规律。方法/过程]构建基于共词分析法的学科主题演化研究方法，包括4个模块，分别是：数据准备、演化阶段划分、主题识别和主题演化分析。结果/结论]在主题识别阶段改进了词频g指数来选取共词分析的对象；在主题演化分析模块，提出从静态和动态两个角度来分析学科主题的演化情况，构建三维战略坐标来进行静态分析，并构建学科主题演化现象识别模型来进行动态分析。
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| 关 键 词： | 共词分析法 学科主题演化 词频g指数 三维战略坐标 |
| 收稿时间： | 2017-06-29 |
Building the Method System of the Subject Theme Evolution Based on the Co-word Analysis Method |
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| Tang Guoyuan.Building the Method System of the Subject Theme Evolution Based on the Co-word Analysis Method[J].Library and Information Service,2017,61(23):100-107. |
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| Authors: | Tang Guoyuan |
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| Institution: | National Science Library, Chinese Academy of Sciences, Beijing 100190 University of Chinese Academy of Sciences, Beijing 100049 |
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| Abstract: | Purpose/significance] Compared with the word frequency analysis method based on the simple keywords statistics and the co-citation analysis whose analysis object is the literature and based on the huge citation indexes, the co-word analysis has certain advantages. This paper will research the laws of subject theme evolution based on the co-word analysis method.Method/process] This paper built the method of subject theme evolution based on the co-word analysis method. It included four modules:data preparation, evolution phasing, theme identification, and analysis of the theme evolution. Result/conclusion] This paper uses the improved word frequency g index to select the object of co-word analysis in the module of theme identification. This paper analyzes the subject theme evolution from both static and dynamic perspectives. This paper presents a three-dimensional strategic diagram for the static analysis, and builds the recognition model of the subject theme evolutionary phenomenon for the dynamic analysis. |
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| Keywords: | co-word analysis subject theme evolution word frequency g index three-dimensional strategic co-ordinates |
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