Leydesdorff, L; de Moya-Anegon, F; Guerrero-Bote, VP. 2010. Journal Maps on the Basis of Scopus Data: A Comparison with the Journal Citation Reports of the ISI. JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY 61 (2): 352-369.

[Eugene Garfield]

Leydesdorff, L; de Moya-Anegon, F; Guerrero-Bote, VP. 2010. Journal Maps on 
the Basis of Scopus Data: A Comparison with the Journal Citation Reports of 
the ISI. JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND 
TECHNOLOGY 61 (2): 352-369.

Author Full Name(s): Leydesdorff, Loet; de Moya-Anegon, Felix; Guerrero-Bote, 
Vicente P.

Language: English
Document Type: Article

KeyWords Plus: WEB-OF-SCIENCE; GOOGLE-SCHOLAR; H-INDEX; RESEARCH 
PERFORMANCE; SCIENTIFIC JOURNALS; COMMUNICATION; INDICATORS; 
IMPACT; RESEARCHERS; SOCIOLOGY

Abstract: Using the Scopus dataset (1996-2007) a grand matrix of aggregated 
journal-journal citations was constructed. This matrix can be compared in terms 
of the network structures with the matrix contained in the Journal Citation 
Reports (JCR) of the Institute of Scientific Information (ISI). Because the 
Scopus database contains a larger number of journals and covers the 
humanities, one would expect richer maps. However, the matrix is in this case 
sparser than in the case of the ISI data. This is because of (a) the larger 
number of journals covered by Scopus and (b) the historical record of citations 
older than 10 years contained in the ISI database. When the data is highly 
structured, as in the case of large journals, the maps are comparable, although 
one may have to vary a threshold (because of the differences in densities). In 
the case of interdisciplinary journals and journals in the social sciences and 
humanities, the new database does not add a lot to what is possible with the 
ISI databases.

Addresses: [Leydesdorff, Loet] Univ Amsterdam, ASCoR, NL-1012 CX 
Amsterdam, Netherlands; [de Moya-Anegon, Felix] SCImago Res Grp, CSIC, 
CCHS, IPP, Madrid, Spain; [Guerrero-Bote, Vicente P.] Univ Extremadura, 
Informat & Commun Sci Dept, E-06071 Badajoz, Spain

Reprint Address: Leydesdorff, L, Univ Amsterdam, ASCoR, Kloveniersburgwal 48, 
NL-1012 CX Amsterdam, Netherlands.

E-mail Address: loet at leydesdorff.net; felix.moya at scimago.es; 
guerrero at unex.es

ISSN: 1532-2882
DOI: 10.1002/asi.21250