Private acts and public objects: An investigation of citer motives
Journal of the American Society for Information Science
A bibliometric study of reference literature in the sciences and social sciences
Information Processing and Management: an International Journal
Citation Analysis in Research Evaluation (Information Science & Knowledge Management)
Citation Analysis in Research Evaluation (Information Science & Knowledge Management)
Differences in impact factor across fields and over time
Journal of the American Society for Information Science and Technology
Journal maps on the basis of Scopus data: A comparison with the Journal Citation Reports of the ISI
Journal of the American Society for Information Science and Technology
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The limitations of citation-based indicators include a lack of coverage, no normalization with respect to the length of reference lists (with a potential bias in favour of reviews), and different citation habits. As a consequence, the distributions of the indicators are not comparable across different disciplines. Here we show that the most popular journal citation indicators used in quality assessment 芒聙聰 the journal impact factors of Thomson Scientific and the scientific journal rankings of Scopus 芒聙聰 are strongly correlated with the proportion of within-database references, and even more so with the number of within-database recent references per paper. No significant correlations were found with other bibliometric magnitudes. We anticipate that these results will be a starting point for more sophisticated indicator models that take this dependence into account, and for the design of strategies aimed at extending such bibliometric databases as Thomson Scientific芒聙聶s Science Citation Index or Elsevier芒聙聶s Scopus to improve their capacity to evaluate all sciences.