Leydesdorff L, "Can scientific journals be classified in terms of aggregated journal-journal citation relations using the Journal Citation Reports? " JASIST 57 (5): 601-613 MAR 2006

[Eugene Garfield]

Loet Leydesdorff : loet at leydesdorff.net

Title: Can scientific journals be classified in terms of aggregated journal-
journal citation relations using the Journal Citation Reports?

Author(s): Leydesdorff T

Source: JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND
TECHNOLOGY 57 (5): 601-613 MAR 2006

Document Type: Article  Language: English
Cited References: 54       Times Cited: 0

Abstract:

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.

Addresses: Leydesdorff T (reprint author), Univ Lausanne, Sch Econ,
Lausanne, Switzerland

Univ Lausanne, Sch Econ, Lausanne, Switzerland
Univ Amsterdam, Amsterdam Sch Commun Res, Amsterdam, NL-1018 CE Netherlands

E-mail Addresses: loet at leydesdorff.net

Publisher: JOHN WILEY & SONS INC, 111 RIVER ST, HOBOKEN, NJ 07030 USA

IDS Number: 019WY
ISSN: 1532-2882

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