We discuss what document types account for the calculation of the journal impact factor (JIF) as published in the Journal Citation Reports (JCR). Based on a brief review of articles discussing how to predict JIFs and ...We discuss what document types account for the calculation of the journal impact factor (JIF) as published in the Journal Citation Reports (JCR). Based on a brief review of articles discussing how to predict JIFs and taking data differences between the Web of Science (WoS) and the JCR into account, we make our own predictions. Using data by cited-reference searching for Thomson Scientific's WoS, we predict 2007 impact factors (IFs) for several journals, such as Nature, Science, Learned Publishing and some Library and Information Sciences journals. Based on our colleagues' experiences we expect our predictions to be lower bounds for the official journal impact factors. We explain why it is useful to derive one's own journal impact factor.展开更多
文章运用文献计量方法,以美国科学情报研究所开发的Web of Science数据库为数据源基础,检索了有关研究影响因子的文献,并从文献量、著者、机构、核心期刊、引文等角度进行了统计和分析,以定量数据从侧面反映了影响因子这一评价期刊质量...文章运用文献计量方法,以美国科学情报研究所开发的Web of Science数据库为数据源基础,检索了有关研究影响因子的文献,并从文献量、著者、机构、核心期刊、引文等角度进行了统计和分析,以定量数据从侧面反映了影响因子这一评价期刊质量的指标在其被提出之后30余年内的发展情况。展开更多
应用网络计量学方法,通过All The Web和Alta Vista两种搜索引擎在不同时间段收集两轮数据,分析国内主要医学网站的链接数、网络影响因子与网络评价排名的相关关系。结果显示医学网站的外部链接数和总链接数与网络评价中的排名具有显著...应用网络计量学方法,通过All The Web和Alta Vista两种搜索引擎在不同时间段收集两轮数据,分析国内主要医学网站的链接数、网络影响因子与网络评价排名的相关关系。结果显示医学网站的外部链接数和总链接数与网络评价中的排名具有显著的相关性,而网络影响因子和网站排名无相关性,同时指出链接分析法存在的不足。展开更多
文摘We discuss what document types account for the calculation of the journal impact factor (JIF) as published in the Journal Citation Reports (JCR). Based on a brief review of articles discussing how to predict JIFs and taking data differences between the Web of Science (WoS) and the JCR into account, we make our own predictions. Using data by cited-reference searching for Thomson Scientific's WoS, we predict 2007 impact factors (IFs) for several journals, such as Nature, Science, Learned Publishing and some Library and Information Sciences journals. Based on our colleagues' experiences we expect our predictions to be lower bounds for the official journal impact factors. We explain why it is useful to derive one's own journal impact factor.
文摘应用网络计量学方法,通过All The Web和Alta Vista两种搜索引擎在不同时间段收集两轮数据,分析国内主要医学网站的链接数、网络影响因子与网络评价排名的相关关系。结果显示医学网站的外部链接数和总链接数与网络评价中的排名具有显著的相关性,而网络影响因子和网站排名无相关性,同时指出链接分析法存在的不足。