Research on the Analysis Method of Patent Technology Topic Evolution in the Perspective of Technology Life Cycle:Taking Video Image Processing Technology as an Example

Ran Congjing, Tian Wenfang, Jia Zhixuan
Information studies: Theory & Application . 2024, (9): 124 -133 .  DOI: 10.16353/j.cnki.1000-7490.2024.09.013