The present situation of researches on full text databases and their retrieval method in China since 1990s are described.To have a better understanding of the development process of full text databases and their retrieval method,the focus and trend of the researches are discussed so as to provide references for their future development.
【目的】比较CiteScore与影响因子(IF)在学术期刊评价中的异同。【方法】以2012—2016年Scopus与Web of Science数据库同时收录的期刊为数据来源,通过R语言测评样本期刊CiteScore指数与IF数据库中2年影响因子(IF2)、5年影响因子(IF5)的相关性。【结果】2012—2016年期刊的Citescore值均与IF2及IF5呈线性相关。CiteScore统计范围涵盖所有文章类型,因此许多综合类期刊的CiteScore值低于IF值,但对于只发表研究论文和综述论文的期刊,CiteScore值高于IF值。【结论】CiteScore覆盖面更广,并且兼顾IF2和IF5两个数值的特点,期刊IF计算方式与期刊收录学科仍存在问题。
