The Interface between the Science Citation Index and the Social Science Citation Index

[Loet Leydesdorff]

Mapping  <http://www.leydesdorff.net/sci_sosci/index.htm>
Interdisciplinarity at the Interfaces between

the  <http://www.leydesdorff.net/sci_sosci/index.htm> Science Citation Index
and the Social Science Citation Index

 <http://www.leydesdorff.net/sci_sosci/sci+sosci.pdf> pdf-version



The two Journal Citation Reports of the Science Citation Index 2004 and the
Social Science Citation Index 2004 were combined in order to analyze and map
journals and specialties at the edges and in the overlap between the two
databases. For journals which belong to the overlap (e.g., Scientometrics),
the merger mainly enriches our insight into  the structure which can be
obtained from the two databases separately; but in the case of scientific
journals which are more marginal in either database, the combination can
provide a new perspective on the position and function of these journals
(e.g., Environment and Planning B-Planning and Design). The combined
database additionally enables us to map citation environments in terms of
the various specialties comprehensively. Using the vector-space model,
visualizations are provided for specialties that are parts of the overlap
(information science, science & technology studies). On the basis of the
resulting visualizations, "betweenness"-a measure from social network
analysis-is suggested as an indicator for measuring the interdisciplinarity
of journals.


** apologies for cross-postings

  _____

Loet Leydesdorff
Amsterdam School of Communications Research (ASCoR)
Kloveniersburgwal 48, 1012 CX Amsterdam
Tel.: +31-20- 525 6598; fax: +31-20- 525 3681
 <mailto:loet at leydesdorff.net> loet at leydesdorff.net ;
<http://www.leydesdorff.net/> http://www.leydesdorff.net/


 <http://www.leydesdorff.net/knbecon> The Knowledge-Based Economy: Modeled,
Measured, and Simulated
 <http://www.universal-publishers.com/book.php?method=ISBN&book=1581126956>
The Self-Organization of the Knowledge-Based Society;
<http://www.universal-publishers.com/book.php?method=ISBN&book=1581126816>
The Challenge of Scientometrics



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