CFP workshop on Methodological Issues in Using Curricula Vitae

Loet Leydesdorff loet at LEYDESDORFF.NET
Tue Mar 6 12:32:10 EST 2007

Dear Jesper,  

If researchers normally are active in many different journals covering 15-20
different subject codes what does that say about using the ISI codes for
definition of specialties? 

Using the ISI codes for the definition of specialties is not a good idea.
The categories have no analytical basis. They are ad hoc, as our colleagues
at ISI admit.  I found no strong relations between the subject categories
and principal components in the citation matrix, for example, in: 

Can Scientific Journals be Classified in terms of Aggregated Journal-Journal
Citation Relations using the Journal Citation Reports? Journal of the
American Society for Information Science and Technology, 57(5) (2006)

With best wishes, 



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> loet at ;

Now available:
The Knowledge-Based Economy: Modeled, Measured, Simulated. 385 pp.; US$
The Self-Organization of the Knowledge-Based Society;
The Challenge of Scientometrics

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