情报学报  2018, Vol. 37 Issue (7): 732-741    DOI: 10.3772/j.issn.1000-0135.2018.07.009
  情报分析方法与技术 本期目录 | 过刊浏览 | 高级检索 |
基于LDA-HMM的专利技术主题演化趋势分析——以船用柴油机技术为例
陈伟1, 林超然1, 李金秋1, 杨早立2
1. 哈尔滨工程大学经济管理学院,哈尔滨 150001;
2. 北京工业大学经济管理学院,北京 100124
Analysis of the Evolutionary Trend of Technical Topics in Patents Based on LDA and HMM: Taking Marine Diesel Engine Technology as an Example
Chen Wei1, Lin Chaoran1, Li Jinqiu1, Yang Zaoli2
1. School of Economics and Management, Harbin Engineering University, Harbin 150001;
2. School of Economics and Management, Beijing University of Technology, Beijing 100124