Structural equivalence in a journal network
Journal of the American Society for Information Science
The geography of science: disciplinary and national mappings
Journal of Information Science
Journal of the American Society for Information Science
Dynamic and evolutionary updates of classificatory schemes in scientific journal structures
Journal of the American Society for Information Science and Technology
Algorithmic procedure for finding semantically related journals
Journal of the American Society for Information Science and Technology
Letter to the editor: Pearson's r and author cocitation analysis: a commentary on the controversy
Journal of the American Society for Information Science and Technology
Journal of the American Society for Information Science and Technology
Classification and powerlaws: The logarithmic transformation: Research Articles
Journal of the American Society for Information Science and Technology
Visualization of the citation impact environments of scientific journals: An online mapping exercise
Journal of the American Society for Information Science and Technology
Betweenness centrality as an indicator of the interdisciplinarity of scientific journals
Journal of the American Society for Information Science and Technology
Caveats for the use of citation indicators in research and journal evaluations
Journal of the American Society for Information Science and Technology
Using field cocitation analysis to assess reciprocal and shared impact of LIS-MIS fields
Journal of the American Society for Information Science and Technology
Patent classifications as indicators of intellectual organization
Journal of the American Society for Information Science and Technology
Journal of the American Society for Information Science and Technology
Journal of the American Society for Information Science and Technology
Hybrid clustering for validation and improvement of subject-classification schemes
Information Processing and Management: an International Journal
Journal of the American Society for Information Science and Technology
Journal of the American Society for Information Science and Technology
A rejoinder on energy versus impact indicators
Scientometrics
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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. By using principal component analysis or factor analysis, the factor scores can be employed 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 because 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. Because 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; in this article the process will be demonstrated for the delineation of a set of biochemistry journals. © 2006 Wiley Periodicals, Inc.