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Clustering Technology Topics Based on Patent Multi-Attribute Fusion |
Liu Xiaoling1(),Tan Zongying1,2 |
1National Science Library, Chinese Academy of Sciences, Beijing 100190, China 2Department of Library, Information and Archives Management, School of Economics and Management, University of Chinese Academy of Sciences, Beijing 100190, China |
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Abstract [Objective] Reasonable, effective and accurate classification of technology topics is of great significance. This article integrates multiple attributes of patents to improve the division of technology topics. [Methods] First, we constructed the patent text vector, the patent citation vector and the patent classification vector based on text contents, citation relationship and classification information of the patents. Then, we obtained a new patent vector based on multi-attribute fusion of the three vectors. Finally, we identified technology topics through patent clustering analysis. [Results] Compared with the patent vector representation method based on single or two attributes, our method had higher patent classification precision, recall rate and F1 value on different IPC classification levels and sample sizes. Our measurement of patent similarity was also more accurate. [Limitations] We used automatic classification for patents rather than direct methods to evaluate the effect of technology topic division. [Conclusions] The proposed method improves the accuracy of patent similarity measurement and technology topic division.
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Received: 24 September 2021
Published: 31 December 2021
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Corresponding Authors:
Liu Xiaoling,ORCID:0000-0001-7523-247X
E-mail: liuxiaoling@mail.las.ac.cn
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