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      Citation Counts and Evaluation of Researchers in the Internet Age

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          Abstract

          Bibliometric measures derived from citation counts are increasingly being used as a research evaluation tool. Their strengths and weaknesses have been widely analyzed in the literature and are often subject of vigorous debate. We believe there are a few fundamental issues related to the impact of the web that are not taken into account with the importance they deserve. We focus on evaluation of researchers, but several of our arguments may be applied also to evaluation of research institutions as well as of journals and conferences.

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          The weakening relationship between the impact factor and papers' citations in the digital age

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            Academic Search Engine Spam and Google Scholar's Resilience Against it

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              Self-Selected or Mandated, Open Access Increases Citation Impact for Higher Quality Research

              , , (2010)
              Articles whose authors make them Open Access (OA) by self-archiving them online are cited significantly more than articles accessible only to subscribers. Some have suggested that this "OA Advantage" may not be causal but just a self-selection bias, because authors preferentially make higher-quality articles OA. To test this we compared self-selective self-archiving with mandatory self-archiving for a sample of 27,197 articles published 2002-2006 in 1,984 journals. The OA Advantage proved just as high for both. Logistic regression showed that the advantage is independent of other correlates of citations (article age; journal impact factor; number of co-authors, references or pages; field; article type; or country) and greatest for the most highly cited articles. The OA Advantage is real, independent and causal, but skewed. Its size is indeed correlated with quality, just as citations themselves are (the top 20% of articles receive about 80% of all citations). The advantage is greater for the more citeable articles, not because of a quality bias from authors self-selecting what to make OA, but because of a quality advantage, from users self-selecting what to use and cite, freed by OA from the constraints of selective accessibility to subscribers only.
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                Author and article information

                Journal
                07 August 2013
                Article
                1308.1946
                cd3a877a-f125-430b-8f16-645e1f59d063

                http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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                Custom metadata
                4 pages, 2 figures, 3 tables
                cs.DL cs.CY

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