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arXiv 0909.4457physics.soc-phcs.DLphysics.data-an
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新的基于引用的期刊指标是如何加入文献计量工具箱的?

How are new citation-based journal indicators adding to the bibliometric toolbox?

Loet Leydesdorff

摘要:

Scopus和Google Scholar的推出,以及社交网络分析方法的发展,使评估期刊的指标比ISI的传统影响因子,引用半衰期和即时性指数更多。在这项研究中,这些新指标相互比较,并与旧的。各种指标是否衡量了引文网络的新维度,或者它们之间是否高度相关?它们是否随着时间的推移而稳健且相对稳定?有两个主要方面-规模和影响-合在一起形成影响。H指数结合了这两个维度,也可以被认为是覆盖范围的指标(如Indegree)。PageRank主要是大小的指标,但与中心性度量有重要的相互作用。Scimago期刊排名(SJR)指标提供了期刊影响因子的替代方案,但计算不太容易。

英文摘要:

The launching of Scopus and Google Scholar, and methodological developments in Social Network Analysis have made many more indicators for evaluating journals available than the traditional Impact Factor, Cited Half-life, and Immediacy Index of the ISI. In this study, these new indicators are compared with one another and with the older ones. Do the various indicators measure new dimensions of the citation networks, or are they highly correlated among them? Are they robust and relatively stable over time? Two main dimensions are distinguished -- size and impact -- which together shape influence. The H-index combines the two dimensions and can also be considered as an indicator of reach (like Indegree). PageRank is mainly an indicator of size, but has important interactions with centrality measures. The Scimago Journal Ranking (SJR) indicator provides an alternative to the Journal Impact Factor, but the computation is less easy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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