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

Leydesdorff, Loet (2006) Can Scientific Journals be Classified in terms of Aggregated Journal-Journal Citation Relations using the Journal Citation Reports? .

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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.

EPrint Type:	Preprint
Keywords:	journal, map, classification, citation, factor, component, analysis, covariance
Subjects:	Classification
ID Code:	1095
Deposited On:	19 March 2006
Alternative Locations:	http://www.leydesdorff.net/classif03
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