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Introduction In the lead article of this topical issue entitled “Impact Factor: Outdated artefact or stepping-stone of journal certification?” Jerome K. Vanclay focuses primarily on data errors in the database of Thomson

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Introduction The journal impact factor (JIF) is one of the most widely discussed scientometric indicators. Journal editors are very much concerned with the impact factor of their journal and of competing journals, because they

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Introduction Vanclay ( 2012 ), which appears as a discussion paper in this special issue, has provocatively asked the question whether the journal impact factor is an outdated artefact or a step towards a more meaningful

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Introduction Journal evaluation is relevant as librarians, scientists, science evaluators, governments, policymakers and publishers need some sort of instrument to compare the value of journals. Librarians use journal

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Introduction Literature is one of the main ways for knowledge transfer. It always serves as an authentic source of information from all around the world and has important role in information communication. The study of journals

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Introduction Peer review is quintessential in science (Benda and Engels 2011 ). Since almost all research articles published in journals undergo the peer review process, it is an essential extension of the scientific process

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Introduction The widely used Journal Impact Factors (JIFs) are indicators of intellectual impact based upon the average number of citations to the recently published articles of any given journal. More precisely, the JIF of a

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Scientometrics
Authors: Johan Bollen, Marko A. Rodriquez, and Herbert Van de Sompel

Summary  

The status of an actor in a social context is commonly defined in terms of two factors: the total number of endorsements the actor receives from other actors and the prestige of the endorsing actors. These two factors indicate the distinction between popularity and expert appreciation of the actor, respectively. We refer to the former as popularity and to the latter as prestige. These notions of popularity and prestige also apply to the domain of scholarly assessment. The ISI Impact Factor (ISI IF) is defined as the mean number of citations a journal receives over a 2 year period. By merely counting the amount of citations and disregarding the prestige of the citing journals, the ISI IF is a metric of popularity, not of prestige. We demonstrate how a weighted version of the popular PageRank algorithm can be used to obtain a metric that reflects prestige. We contrast the rankings of journals according to their ISI IF and their Weighted PageRank, and we provide an analysis that reveals both significant overlaps and differences. Furthermore, we introduce the Y-factor which is a simple combination of both the ISI IF and the weighted PageRank, and find that the resulting journal rankings correspond well to a general understanding of journal status.

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hypotheses (Leydesdorff 2010b ). In this study, I develop this three-layered model in empirical terms using aggregated citation relations among scientific journals as networks. Scientific journals are organized in functionally different groups. For

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program for bibliometric mapping. Scientometrics, 2010, 84 (2), 523–538. Schubert, A.: A reference-based Hirschian similarity measure for journals. Scientometrics, 2010, 84 (1), 133

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