Eigenfactor

Not to be confused with Eigenvector.
Part of a series on
Citation metrics

The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal.[1] Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals.[2] As a measure of importance, the Eigenfactor score scales with the total impact of a journal. All else equal, journals generating higher impact to the field have larger Eigenfactor scores. Citation metrics like eigenfactor or PageRank-based scores reduce the effect of self-referential groups.[3][4]

Eigenfactor scores and Article Influence scores (AIS) are calculated by eigenfactor.org, where they can be freely viewed. The Eigenfactor score is intended to measure the importance of a journal to the scientific community, by considering the origin of the incoming citations, and is thought to reflect how frequently an average researcher would access content from that journal.[2] However, the Eigenfactor score is influenced by the size of the journal, so that the score doubles when the journal doubles in size (measured as number of published articles per year).[5] The Article Influence score measures the average influence of articles in the journal, and is therefore comparable to the traditional impact factor.

The Eigenfactor approach is thought to be more robust than the impact factor metric,[6] which purely counts incoming citations without considering the significance of those citations.[7] While the Eigenfactor score is correlated with total citation count for medical journals,[8] these metrics provide significantly different information. For a given number of citations, citations from more significant journals will result in a higher Eigenfactor score.[9] Eigenfactor is similar to Eigenvector centrality and PageRank.

Originally Eigenfactor scores were measures of a journal's importance; it has been extended to author-level.[10] It can also be used in combination with the h-index to evaluate the work of individual scientists.

See also

References

  1. ^ Bergstrom, C. T.; West, J. D.; Wiseman, M. A. (2008). "The Eigenfactor Metrics". Journal of Neuroscience. 28 (45): 11433–11434. doi:10.1523/JNEUROSCI.0003-08.2008. PMC 6671297. PMID 18987179.
  2. ^ a b Bergstrom, C. T. (2007). "Eigenfactor: Measuring the value and prestige of scholarly journals". College & Research Libraries News. 68 (5): 314–316. doi:10.5860/crln.68.5.7804.
  3. ^ Ma, Nan; Guan, Jiancheng; Zhao, Yi (2008). "Bringing PageRank to the citation analysis". Information Processing & Management. 44 (2): 800–810. doi:10.1016/j.ipm.2007.06.006.
  4. ^ Sun, Ye; Latora, Vito (2020). "The evolution of knowledge within and across fields in modern physics". Scientific Reports. 10 (1): 12097. arXiv:2001.07199. Bibcode:2020NatSR..1012097S. doi:10.1038/s41598-020-68774-w. ISSN 2045-2322. PMC 7374558. PMID 32694516.
  5. ^ "Eigenfactor.org FAQ". 14 July 2015.
  6. ^ Bollen, Johan; Van de Sompel, Herbert; Hagberg, Aric; Chute, Ryan (2009). "A principal component analysis of 39 scientific impact measures". PLOS ONE. 4 (6): e6022. arXiv:0902.2183. Bibcode:2009PLoSO...4.6022B. doi:10.1371/journal.pone.0006022. PMC 2699100. PMID 19562078.
  7. ^ Fersht, A. (Apr 2009). "The most influential journals: Impact Factor and Eigenfactor". Proceedings of the National Academy of Sciences of the United States of America. 106 (17): 6883–6884. Bibcode:2009PNAS..106.6883F. doi:10.1073/pnas.0903307106. ISSN 0027-8424. PMC 2678438. PMID 19380731.
  8. ^ Davis, P. M. (2008). "Eigenfactor: Does the principle of repeated improvement result in better estimates than raw citation counts?". Journal of the American Society for Information Science and Technology. 59 (13): 2186–2188. arXiv:0807.2678. doi:10.1002/asi.20943. S2CID 11358187.
  9. ^ West, Jevin D.; Bergstrom, Theodore; Bergstrom, Carl T. (2010). "Big Macs and Eigenfactor Scores: Don't Let Correlation Coefficients Fool You". arXiv:0911.1807v2 [cs.CY].
  10. ^ West, Jevin D. (2013). "Author-level Eigenfactor metrics: Evaluating the influence of authors, institutions, and countries within the social science research network community". Journal of the American Society for Information Science and Technology. 64 (4): 787–801. doi:10.1002/asi.22790.

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