What does it measure?
SJR measures both the number of citations received by a journal and the quality of the journals that the citations came from. This allows journals to be ranked according to the impact and prestige they have in their discipline. Academics can use SJR to find out which journals are most prestigious in their field and so where they might want to publish.
How is it measured?
SJR was inspired by Google’s PageRank algorithm and assumes that not all citations are equal; that is, citations from prestigious sources boost the prestige of the journal cited. The data for the calculations is drawn from the SciVerse Scopus database and includes citations from the last three years. This measurement is similar to ISI impact factors.
How do I get the data?
- One journal at a time: Go to http://www.scimagojr.com/journalsearch.php and enter the title of the journal you are interested in. Click on the data tab to see the SJR.
- Multiple journals: Go to http://www.scimagojr.com/compare.php?un=journals and enter the name of the journals you are interested in comparing into the search bars and click compare.
- To get an overview of the ranking of journals in your discipline, go to http://www.scimagojr.com/journalrank.php and use the search fields at the top to limit by subject, category, and country.
NOTE: SCImago is run by a European research group. In Europe, number notation is done differently than in the United States. The comma is used to denote decimal place and periods are used for numbers over a thousand.
United States: 1,000.00
Gonzalez-Pereira, B., Guerro-Bote, V. and Moya-Anegon, F. The SJR indicator: A new indicator of journals' scientific prestige. Retrieved from: http://arxiv.org/ftp/arxiv/papers/0912/0912.4141.pdf