混合关键词选择策略对共词分析效果的影响研究

发布时间：2018-10-31 13:19

【摘要】：[目的/意义]在共词分析方法中,基于高频词的选词策略忽略表意性较强且能够优化共现关系的某些低频关键词以及能够展现领域趋势及潜在热点的突发关键词,这将直接影响到共词分析的准确度及可预测性。通过系统地研究关键词的选择策略,优化实际应用时的具体方案,对规范共词分析关键词的选取标准、促进共词分析方法的不断完善和发展都具有重要意义。[方法/过程]引入低频词和突发词对高频词进行适当补充,提出三种混合关键词选择策略(即高频词+突发词、高频词+低频词、高频词+低频词+突发词),并以国内外"开放式创新"主题研究为例,探究混合关键词选择策略与单纯基于高频词的关键词选择策略对共词分析效果的影响。[结果/结论]选取适当的低频词及突发词对高频词进行补充,能够较大程度地优化共词聚类效果以及关键词网络共现效果,且根据共词分析不同的研究目的应采用不同的关键词选择策略进行分析。
[Abstract]:[objective / meaning] in the analysis of cowords, the strategy of word selection based on high-frequency words ignores some low-frequency keywords with strong ideographic meaning and can optimize co-occurrence relationship, as well as burst keywords that can show the trend and potential hot spots in the field. This will directly affect the accuracy and predictability of coterm analysis. It is of great significance to study the strategy of keyword selection and optimize the concrete scheme in practical application. It is of great significance to standardize the selection criteria of cowords and to promote the continuous improvement and development of coterm analysis methods. [method / process] introduce low-frequency words and burst words to supplement high-frequency words, and put forward three kinds of mixed keyword selection strategies (i.e. high-frequency word burst word, high-frequency word low-frequency word burst word), Taking the theme of "open innovation" at home and abroad as an example, this paper explores the influence of mixed keyword selection strategy and keyword selection strategy based on high-frequency words on the analysis effect of cowords. [results / conclusion] selecting appropriate low-frequency words and burst words to supplement high-frequency words can greatly optimize the effect of coterm clustering and keyword network co-occurrence. Different keyword selection strategies should be used for different research purposes.
【作者单位】：武汉大学信息资源研究中心;武汉大学信息管理学院;
【基金】：国家自然科学基金项目“科研团队动态演化规律研究”的成果,项目编号:71273196
【分类号】：G353.1

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