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基于专利文献度量技术间关联,不仅应考虑技术间共现关系,还不可忽视技术间固有联系,单择其一作为度量标准会造成分析结果的片面性。文章以德温特手工代码(DMC)表征技术,通过计算DMC间的概念语义相似度来度量技术与技术间的固有联系,以DMC在专利文献中的共现关系来度量技术间共现关系,将技术间固有联系及其共现关系全面引入到技术分析中,提出基于DMC的技术分析方法。实验结果的合理性得到提升,将结果以技术图谱的形式可视化,图谱结构清晰,分类合理,能较好观察领域研究热点。
Based on the patent literature, we can not only consider the co-occurrence relationship between technologies, but also ignore the inherent relationship between technologies. Choosing one as the metric will result in one-sidedness of the analysis results. In this paper, Derwent manual code (DMC) characterization techniques are used to measure the inherent relationship between technology and technology by calculating the conceptual semantic similarity between DMCs. The co-occurrence relationship between technologies is measured by the co-occurrence relationship of DMCs in patent documents. The inherent relationship between technology and its co-occurrence relationship is fully introduced into the technical analysis, the technical analysis method based on DMC is proposed. The rationality of the experimental results is improved, the results are visualized in the form of technical maps, the structure of the map is clear, the classification is reasonable, and the research hot spots in the field can be better observed.