Emerging Technology Topics Identification Based on Dynamic Topic Network:A Case Study of Hydrogen Fuel Cell
[Research purpose]Emerging technology represents the future direction of technological development,and is the key technol-ogy that must be grasped to seize the commanding heights of the frontier of science and technology.The accurate identification of emerging technology is of great significance.[Research method]First of all,the SBERT-LDA-IPC model is constructed using patent text and classification information to identify technology topics in each period.After that,the research draws the dynamic topic network according to the topic similarity matrices and identifies the topics with innovation and continuity as candidate topics.Then the research evaluates the novelty and influence of candidate topics to identify emerging technology topics.Finally,through the empirical research of hydrogen fuel cell patents,the viability and efficacy of the emerging technology topics identification approach described in this research are confirmed.[Research conclusion]The result shows that the SBERT-LDA-IPC model improves the consistency and accuracy of topic clustering.Based on the policies released by the country in the hydrogen fuel cell industry,the three emerging technology topics identified are consist-ent with the national policy formulation and industrial development direction.
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