Severe Inconsistencies Web of Science V4 / V5

Loet Leydesdorff loet at LEYDESDORFF.NET
Wed Jul 20 13:41:56 EDT 2011

Dear Hermann, 


The database is always dynamic. Journals are added and sometimes backtracked
from the perspective of hindsight. I would not expect V4 and V5 to be very
similar. For example, my own publication record went up with 10 new
publications. J


Best wishes, 




Loet Leydesdorff 

Professor, University of Amsterdam
Amsterdam School of Communications Research (ASCoR), 
Kloveniersburgwal 48, 1012 CX Amsterdam. 
Tel.: +31-20- 525 6598; fax: +31-842239111
 <mailto:loet at> loet at ;


From: ASIS&T Special Interest Group on Metrics
[mailto:SIGMETRICS at LISTSERV.UTK.EDU] On Behalf Of Hermann Schier
Sent: Wednesday, July 20, 2011 4:17 PM
Subject: [SIGMETRICS] Severe Inconsistencies Web of Science V4 / V5


the relaunch of Web of Science this week was not really a smooth transition
V4 to V5. Today the system starts to work again but now we encounter 
inconsistencies in citation counts between V4 and V5 which prohibits the use
Web of Science at the moment.

I compiled as example a comparison of the the articles in the Hirsch core of
Manuel Cardona, who is a well known solid state physicist.

An citation report in both version brings up a stunning difference in Hirsch
factor: 99 versus 89

Results found

Sum of the Times Cited


WoS V4




WoS V5




Then I compared the the articles one by one and found a lot of highly cited
papers are missing in V5,
please have a look in the attached excel file.

At the moment I have no clue for this unsettling findings, but most of the
articles are from Physical Review series
where citation linking was always notoriously clumsy.

Does anybody else encounter similar problems?
Web of Science is a major resource for our scientists and it is really sad 
that I have strongly advice against usage of Web of Science at the moment. 



Dr. Hermann Schier
Max-Planck-Institut fuer Festkoerperforschung
Informationsvermittlung der CPT-Sektion
Heisenbergstr. 1, D-70569 Stuttgart
Tel. ++-(0)711-689-1284 FAX ++-(0)711-689-1292
e-mail: h.schier at
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