Analysis methodology of strategical diagram of patent technology term using co-word technology
专利技术术语共现的战略图分析方法*

Extracted from unstructured text data of patent name and abstract, used the technology terms to analysis technology themes using the third generation of co-word analysis technology. Introduced equivalence index to measure the link strength of term-pairs. Grouped technology terms into several clusters named technology themes. Then calculated density and centrality index of themes to draw the strategical diagram. Taking fuel cell for example, experiment results show that the presented method can illustrate the industrial technology themes well.