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    Can Scientific Journals be Classified in terms of Aggregated Journal-Journal Citation Relations using the Journal Citation Reports?

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    Author
    Leydesdorff, Loet
    Issue Date
    2006
    Submitted date
    2006-03-19
    Keywords
    Classification
    Local subject classification
    journal
    map
    classification
    citation
    factor
    component
    analysis
    covariance
    
    Metadata
    Show full item record
    Citation
    Can Scientific Journals be Classified in terms of Aggregated Journal-Journal Citation Relations using the Journal Citation Reports? 2006,
    URI
    http://hdl.handle.net/10150/105561
    Abstract
    This is a preprint of an article published in Journal of the American Society for Information Science and Technology 57 (5):601-613, 2006. The aggregated citation relations among journals included in the Science Citation Index provide us with a huge matrix which can be analyzed in various ways. Using principal component analysis or factor analysis, the factor scores can be used as indicators of the position of the cited journals in the citing dimensions of the database. Unrotated factor scores are exact, and the extraction of principal components can be made stepwise since the principal components are independent. Rotation may be needed for the designation, but in the rotated solution a model is assumed. This assumption can be legitimated on pragmatic or theoretical grounds. Since the resulting outcomes remain sensitive to the assumptions in the model, an unambiguous classification is no longer possible in this case. However, the factor-analytic solutions allow us to test classifications against the structures contained in the database. This will be demonstrated for the delineation of a set of biochemistry journals.
    Type
    Preprint
    Language
    en
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