国际稀土研究的科学知识图谱分析

Analysis of scientific knowledge mapping in research area of international rare earth

以1985-2015年Web of Science(WoS)数据库中已发表的学术论文为基础,利用科学知识图谱分析软件VOSviewer和Sci2工具包对国际稀土研究领域进行可视化分析.首先,通过文献共被引分析稀土研究的知识基础;其次,通过关键词共现分析探测稀土研究前沿;最后,通过突现检测分析稀土研究趋势,并结合我国稀土研究的特点和现状,对我国稀土研究进行综述.结果表明,中国的发文量在国家/地区中居于首位,中国科学院在相关机构中发文量最多;稀土研究知识基础的重要文献形成3个聚类;稀土研究的前沿主题主要为稀土发光材料、稀土永磁材料、稀土储氢材料、稀土化合物和化学合成法5个聚类;稀土研究趋势主要的突现关键词包括稀土化合物、荧光粉等方面.

Based on publications in Web of Science TM in 1985-2015, the rare earth research area was visualized by knowledge mapping tools —Sci2Tool and VOSviewer. First, the knowledge base was explored through references co-citation analysis; secondly, the research fronts were analyzed through word co-occurrence analysis; lastly, the research trend was researched through burst detection analysis. The results indicate that China and Chinese Academy Sciences have the most publications in the view of the countries and institutions respectively. The references co-citation analysis by VOSviewer helps figure out that there are 3clusters of cited references in rare earth research area; then the density cluster mapping of word co-occurrence network by VOSviewer displays that there are 5 clusters focused on the topics of rare earth luminescence materials, rare earth permanent magnetic materials, rare earth hydrogen absorbing materials, rare earth compounds and chemical synthesis; the burst detection by Sci2 Tool finds the top word bursts like rare earth compounds and phosphors.