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

Leydesdorff, Loet How are new citation-based journal indicators adding to the bibliometric toolbox? Journal of the American Society for Information Science and Technology, 2009, vol. 60, n. 7. [Journal article (On-line/Unpaginated)]

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English abstract

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.

Item type: Journal article (On-line/Unpaginated)
Keywords: impact, H-index, journal, citation, centrality, ranking
Subjects: A. Theoretical and general aspects of libraries and information. > AB. Information theory and library theory.
Depositing user: Loet Leydesdorff
Date deposited: 18 Jan 2010
Last modified: 14 Dec 2012 21:46
URI: http://hdl.handle.net/10760/13474

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