摘要
为了克服共词分析中主题词选取主观性强的缺陷,借鉴g指数的思想,提出一种基于g指数的主题词选取方法——词频g指数。以图书情报学为例,对词频g指数进行了实证分析,并与齐普夫第二定律的选词结果进行比较,得出其选词结果很好的满足二八定律。同时对主题词进行聚类分析得到良好的结果,为共词分析的准确性提供了理论依据。
In order to effectively overcome the defects of subjectivity inherent in the selection in co-word analysis, the paper puts forward a new method of selecting topic words based on the g-index of word frequency. Taking the Library and Information Science as an example, the author makes a positive analysis of the g-index and compares the result of choosing topic words based on g-index with that based on Zipf＇s Law. Working as a fine map description of topic words Clustering, the result of the analysis demonstrates that this new method satisfies the 80/20 Rule well, providing an important theoretical basis for the accuracy of co-word analysis.
出处
《情报杂志》
CSSCI
北大核心
2012年第2期52-55,74,共5页
Journal of Intelligence
关键词
共词分析
G指数
齐普夫定律
词频g指数
co-word analysis g-index Zipf＇s Law g-index of the frequency words
