| 基于共词分析的学科主题演化方法改进研究 |
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| 引用本文： | 叶春蕾,冷伏海.基于共词分析的学科主题演化方法改进研究[J].情报理论与实践,2012,35(3):79-82. |
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| 作者姓名： | 叶春蕾 冷伏海 |
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| 作者单位： | 1. 中国科学院国家科学图书馆,北京100190／北京城市学院,北京100094
2. 中国科学院国家科学图书馆,北京,100190 |
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| 摘 要： | 学科主题演化是情报分析人员采用一定的信息技术方法观察主题在时间维度上的发展、变化趋势以及不同主题之间的交互作用，它已成为情报研究的一项重要内容。基于词频或共现词频的共词分析方法难以反映主题词对间更层次的语义关系，针对这一情况，提出一种改进的共词分析方法，该方法体现主题词、主题和文档间的层次语义关系，以更微观、精确的语义层面展现主题演化过程。
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| 关 键 词： | 共词分析 学科 主题演化分析 |
Research on the Improvement of the Disciplinary Theme Evolution Method Based on Co-word Analysis |
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| Institution: | Ye Chunlei et al. |
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| Abstract: | The disciplinary theme evolution has become an important content of information research,by which the intelligence analysts use certain information technologies and methods to observe the development and change trend of the theme and the interaction between different themes based on time dimension.The co-word analysis method based on word frequency or co-occurrence word frequency is difficult to reflect the more hierarchic semantic relations between term pairs.In view of this situation,this paper proposes an improved co-word analysis method.The method embodies the hierarchic semantic relations between terms,themes and documents,and reflects the theme evolution process in a more microscopic and accurate semantic level. |
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| Keywords: | co-word analysis discipline theme evolution analysis |
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