摘要： 【目的】分析四种网络数据源在期刊影响力评价方面的异同，为期刊综合评价提供理论指导。【方法】 以2014年JCR、Pubmed数据库均收录的影响因子排名前50的开放存取期刊为研究对象，通过相关分析、因子分析提取各数据源平台在期刊评价中的主要影响因子，作为期刊评价中重点考察的代表性数据指标。【结果】 JCR的期刊影响力主要来源于被引频次、可引用项目；Google scholar扩大了期刊信息的传播范围；Altmetrics.com注重网络传播指标、获取指标和利用指标，其主要影响因素来源于网络传播指标。【结论】 JCR反映的是期刊在学界的影响力；Google scholar前置了期刊评价；应用搜索引擎获取期刊网站的链接数、IP访问量、PV浏览量等描述了期刊传播阶段的影响力。Altmetric.com将期刊评价延伸到传播、获取和利用的全过程。

Abstract: ［Purposes］This paper compares the four journals evaluation results of network data sources and analyzes the similarities and differences of four kinds of network data sources in the evaluation of journal influence, thus providing theoretical guidance for the comprehensive journal evaluation. ［Methods］The top 50 open access journals in the JCR and Pubmed databases in 2014 were selected as the research objects. Through the correlation analysis and factor analysis, the main influencing factors of the data sources in different platforms were extracted, so as to regard them as the representative data index of the periodical evaluation. ［Findings］In the field of biomedicine, the influence of JCR journals mainly comes from the cited frequency and numbers of papers that can be cited. Google scholar expands the scope of information dissemination. Altmetrics.com focuses on indexing and usage metrics and its main influencing factors are network communication indicators. ［Conclusions］ JCR reflects the impact of journals in the academic community; Google scholar prioritizes the journal evaluation; search engines that access to the number of links on the journal site, IP traffic, Pv views can reflect the influence of journals in the dissemination phase. Altmetric.com extends journal evaluation to the entire process of information dissemination, acquisition and utilization.