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'''SCImago Journal Rank''' (SJR indicator) is a measure of scientific influence of [[academic journal|scholarly journal]]s that accounts for both the number of [[citation]]s received by a journal and the importance or prestige of the journals where such citations come from. The SJR indicator is a variant of the [[centrality|eigenvector centrality measure]] used in network theory. Such measures establish the importance of a node in a network based on the principle that connections to high-scoring nodes contribute more to the score of the node. The SJR indicator, which is inspired by the [[PageRank]] algorithm, has been developed to be used in extremely large and heterogeneous journal citation networks. It is a size-independent indicator and its values order journals by their "average prestige per article" and can be used for journal comparisons in science evaluation processes.
The ''SJR indicator'' is a free journal metric which uses an algorithm similar to [[PageRank]] and provides an alternative to the [[impact factor]] (IF), which is based on data from [[Scopus]].<ref>{{cite journal | url = http://www.nature.com/news/2008/080102/full/451006a.html | title= Free journal-ranking tool enters citation market | journal = [[Nature (journal)|Nature]] | date= 2 January 2008 | volume= 451 | issue= 6 | doi= 10.1038/451006a | author = Declan Butler | pmid= 18172465 | pages= 6 |accessdate=14 May 2010}}</ref><ref>{{cite journal | url = http://www.fasebj.org/cgi/content/short/22/8/2623 | title = Comparison of SCImago journal rank indicator with journal impact factor | author= Matthew E. Falagas et al | doi = 10.1096/fj.08-107938 | journal = [[The FASEB Journal]] | year = 2008 | issue = 22 | pages = 2623–2628 | pmid = 18408168 | volume = 22 }}</ref> Average citations per document in a 2-year period, abbreviated as "Cites per Doc. (2y)", is another index that measures the scientific impact of an average article published in the journal. It is computed using the same formula
== Rationale ==
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