Authors:
Antonio J. Gómez-Núñez CSIC, SCImago Research Group Associated Unit, Granada, Spain
CSIC – Institute of Public Goods and Policies (IPP), Madrid, Spain

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Benjamín Vargas-Quesada CSIC, SCImago Research Group Associated Unit, Granada, Spain
Faculty of Communication and Information Science, University of Granada, Granada, Spain

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Félix de Moya-Anegón CSIC, SCImago Research Group Associated Unit, Granada, Spain
CSIC – Institute of Public Goods and Policies (IPP), Madrid, Spain

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Wolfgang Glänzel Centre for R&D Monitoring (ECOOM) and Dept. MSI, K.U. Leuven, Leuven, Belgium

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Abstract

In order to re-categorize the SCImago Journal & Country Rank (SJR) journals based on Scopus, as well as improve the SJR subject classification scheme, an iterative process built upon reference analysis of citing journals was designed. The first step entailed construction of a matrix containing citing journals and cited categories obtained through the aggregation of cited journals. Assuming that the most representative categories in each journal would be represented by the highest citation values regarding categories, the matrix vectors were reduced using a threshold to discern and discard the weakest relations. The process was refined on the basis of different parameters of a heuristic nature, including (1) the development of several tests applying different thresholds, (2) the designation of a cutoff, (3) the number of iterations to execute, and (4) a manual review operation of a certain amount of multi-categorized journals. Despite certain shortcomings related with journal classification, the method showed a solid performance in grouping journals at a level higher than categories—that is, aggregating journals into subject areas. It also enabled us to redesign the SJR classification scheme, providing for a more cohesive one that covers a good proportion of re-categorized journals.

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Scientometrics
Language English
Size B5
Year of
Foundation
1978
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0138-9130 (Print)
ISSN 1588-2861 (Online)