基于LDA的国内图书馆学研究主题发现及演化研究

Research on the Theme Discovery and Evolution of Domestic Library Science Research Based on LDA

为掌握我国图书馆学研究热点及变化趋势,本文以2008—2017年图书馆学领域11种核心期刊文献作为语料库,利用LDA方法建立主题提取模型,挖掘图书馆学领域主题及其演变情况。实验发现十年间图书馆学领域研究主题有13个,对这些主题进行主题强度计算后发现热门主题有图书馆管理、图书馆理论、图书馆服务、用户研究和资源建设。在不同时间窗口下对各个主题的强度进行计算,发现热度上升的主题有阅读推广、检索技术、开放获取,热度衰减的主题有图书馆服务、资源建设。

To identify the research topics and research trends of domestic library, this paper chooses the research papers which had been published on 11 corejournals of library science from 2008 to 2017 as corpus and uses LDA method to establish theme extraction model to mine the themes and their evolution in library science. Experimental results show that all the research in library science between 2008 and 2017 can be divided into 13 topics. After the calculation of subject intensity, this paper finds the most popular topics are the library management, library theory, library service, user research and sources construction. After the calculation of subject intensity on different time windows, this paper finds that the rising topics include reading promotion, retrieval technology and open access, while topics like library service and sources construction are becoming less popular.