认为利用专利技术功效主题词与专利引文进行共现分析可直观识别核心专利簇的技术功效特征。与专利引文共现分析相比，专利技术功效主题词与专利引文的交叉共现增加了主题标识，使得基于相同标引主题词的被引专利有相似的技术主题和功效特征。同时，不同的技术功效主题词通过专利引文交叉共现，可以识别不同技术主题的关联度以及技术主题对应的功效特征。最后，选择医用显微内窥镜领域相关专利做实证分析，通过技术功效主题词-专利引文、技术主题词-专利引文以及专利引文共现分析，论证专利技术功效主题词与专利引文共现方法在核心专利挖掘方面的特征、优越性及不足。
Based on analysis to the current core patent mining methods, we constructed technology-effect subject terms and citations cross co-occurrence to mine core patent clusters. Through the cross co-occurrence analysis to patent technology-effect subject terms, we can easily identify the technology-effect of core patent clusters. Meanwhile, the technology-effect subject terms also get a cross co-occurrence through patent citations, which help to identify the relationship of the various technology in a special field. In this article, we chose medical microendoscopic as empirical study to display the characteristics of cross co-occurrence way, advantages and disadvantages among the cross co-occurrence of technology-effect subject terms with patent citations, co-occurrence of technology subject term with patent citations and the patent co-citation co-occurrence analysis in visualization network map.
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