文章摘要
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
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
投稿时间:2019-10-08  
DOI:10.3772/j.issn.1673-2286.2019.10.003
中文关键词: 信息服务;LDA主题建模;TF-IDF;主题演变
英文关键词: Information Service; LDA Topic Modeling; TF-IDF; Theme Evolution
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。
作者单位
钱旦敏 南通大学医学院 
郑建明 南京大学信息管理学院 
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中文摘要:
      运用LDA主题模型梳理近22年来国内信息服务研究主题演化情况,为该领域的可持续发展提供借鉴和指导。以中国知网(CNKI)为信息源,以信息服务为主题检索CSSCI期刊,排除不符合论文,共检索到8 908篇论文,并按年文献量趋势划分为4个阶段。基于TF-IDF构建LDA主题模型,利用MindMapper绘制主题演变图,比较分析信息服务研究主题的持续、弱化、转移与新兴。模型结果显示,1998年以来我国信息服务领域持续研究主题包括图书馆服务、信息产业服务、资源服务及学科服务;图书馆服务模式和信息伦理研究逐渐弱化、转移;移动信息服务、智库大数据、专业领域信息以及图情计量成为近年来该领域研究热点。
英文摘要:
      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.
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