数字图书馆论坛Issue(10)：16-22,7.DOI:10.3772/j.issn.1673-2286.2019.10.003
基于LDA主题模型的信息服务文献主题提取与演变研究
Research on Subject Extraction and Evolution of Information Service Literature Based on LDA Topic Model
摘要
Abstract
LDA topic model is used to sort out the evolution of domestic research subject of information service, and provide reference and guidance for sustainable development in this field. Using the CNKI journal database as the information source, the CSSCI journals are searched for the topic of information service, and the non-conformity papers are excluded. A total of 8 908 papers are retrieved and divided into four stages according to the annual literature volume trend. Building an LDA topic model based on TF-IDF, MindMapper is used to draw the subject evolution map to compare and analyze the persistence, weakening, transfer and emerging of the research topic. The results of the model show that since 1998, the main research topics in the field of information services in China include library services, information industry services, resource services and subject services;library service models and information ethics research have gradually weakened and shifted;mobile information services, think tanks data, professional field information, and graph measurement have become hotspots in this field in recent years.关键词
信息服务/LDA主题建模/TF-IDF/主题演变Key words
Information Service/LDA Topic Modeling/TF-IDF/Theme Evolution分类
社会科学引用本文复制引用
钱旦敏,郑建明..基于LDA主题模型的信息服务文献主题提取与演变研究[J].数字图书馆论坛,2019,(10):16-22,7.基金项目
本研究得到教育部人文社会科学研究基金项目"新市民公共卫生信息精准化服务模式研究"(编号:17YJCZH140)、江苏省哲学社会科学基金项目"居民健康信息精准服务模式研究"(编号:18SHB004)、江苏省高校哲学社会科学研究基金项目"新型城镇化进程中公共卫生信息精准化服务模式研究"(编号:2017SJB1211)和南通大学博士基金"健康管理智慧信息服务模式研究"(编号:03082161)资助. （编号:17YJCZH140）
