The eigenfactor is a more recent, and freely-available metric, devised at the University of Washington by Jevin West and Carl Bergstrom Where the IF counts all citations to a given article as being equal, the eigenfactor weights citations based on the impact of the citing journal. Its creators assert that it can be viewed as "a rough estimate of how often a journal will be used by scholars." Eigenfactor values are freely available at http://eigenfactor.org

Bergstrom, C. (2007)
Eigenfactor: Measuring the value and prestige of scholarly journals. College & Research Libraries News 68: 314-316.

Factsheet; University of Southhampton


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