Topic and Evolution Analysis on Domestic User Portrait Based on LDA Model
[Purpose/significance]This article aims to discover the research topics in the field of domestic user portrait research and the development of these topics,and provide reference for the construction of library user portraits.[Method/process]It uses the LDA topic model to mine the topics,abstracts and keywords of domestic user portrait research papers,and analyzes the hot topics by year and discoveres the evolution trend of each topic.[Result/conclusion]The research field of user portrait in China can be divided into eight research topics:new media marketing,e-commerce system and precision marketing,recommendation algorithm and recommendation systems,health information service,education and teaching,financial service,social networks and content analysis,university library and information service.According to the annual evolution trend,the research topics can be divided into three categories:rising topics,stable topics and decaying topics.University libraries and information services are the topic with the largest increase,which indicates that researchers are paying more and more attention to the application research of user portraits in libraries and related fields.
user portraitLDA topic modelevolution analysislibraryprecise service
万方数据
维普
