The Eigenfactor Project™ is a non-commercial academic research project sponsored by the Bergstrom Lab in the Department of Biology at the University of Washington. It uses network analysis and information theory to develop novel methods for evaluating the influence of scholarly periodicals. Citation data is used to calculate both an Eigenfactor Score and an Article Influence Score. Metrics are available for years 2007 forward. The calculation is based on the number of times articles from journals published in the past five years have been cited in the year studied. It also considers which journals have contributed these citations.
See the Information Tab, http://www.eigenfactor.org/methods.php for more information about the database and how metrics are calculated.
User tools and features
The Eigenfactor database may be searched by Journal Name, Year, or ISI Category. A textbox is available for keying in search terminology. There is also an advanced search feature which allows the user to execute a search on a broader array of categories.
2007 – 2011.
Published journal literature.
Type of coverage
Similar to journal/article impact factor scores.
Print counterpart or
Related to ISI’s Journal Citation Reports product and Google’s page analytics.
Vendor/electronic presentation provider