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.

Eigenfactor scores and Article Influence scores 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).[3] 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,[4] which purely counts incoming citations without considering the significance of those citations.[5] While the Eigenfactor score is correlated with total citation count for medical journals,[6] these metrics provide significantly different information. For a given number of citations, citations from more significant journals will result in a higher Eigenfactor score.[7]

Originally Eigenfactor scores were measures of a journal's importance; it has been extended to author-level.[8] It can also be used in combination with the h-index to evaluate the work of individual scientists.

See also


  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. 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. ^ "Eigenfactor.org FAQ". 14 July 2015.
  4. ^ 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.
  5. ^ 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.
  6. ^ 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.
  7. ^ 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].
  8. ^ 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.

External links

Academic journal

An academic or scholarly journal is a periodical publication in which scholarship relating to a particular academic discipline is published. Academic journals serve as permanent and transparent forums for the presentation, scrutiny, and discussion of research. They are usually peer-reviewed or refereed. Content typically takes the form of articles presenting original research, review articles, and book reviews. The purpose of an academic journal, according to Henry Oldenburg (the first editor of Philosophical Transactions of the Royal Society), is to give researchers a venue to "impart their knowledge to one another, and contribute what they can to the Grand design of improving natural knowledge, and perfecting all Philosophical Arts, and Sciences."The term academic journal applies to scholarly publications in all fields; this article discusses the aspects common to all academic field journals. Scientific journals and journals of the quantitative social sciences vary in form and function from journals of the humanities and qualitative social sciences; their specific aspects are separately discussed.

The first academic journal was Journal des sçavans (January 1665), followed soon after by Philosophical Transactions of the Royal Society (March 1665), and Mémoires de l'Académie des Sciences (1666). The first fully peer-reviewed journal was Medical Essays and Observations (1733).

Author-level metrics

Author-level metrics are citation metrics that measure the bibliometric impact of individual authors, researchers, academics, and scholars. A prime example is the h-index. Other metrics originally developed for academic journals can be reported at researcher level, such as the author-level eigenfactor and the author impact factor.

Canadian Journal of Surgery

The Canadian Journal of Surgery is a bimonthly peer-reviewed open access medical journal covering surgery. It was established in 1957 and is published by the Canadian Medical Association. The current editors-in-chief are Edward J. Harvey and Chad Ball. The journal is sponsored by the Canadian Association of General Surgeons, Canadian Society for Vascular Surgery, Canadian Association of Thoracic Surgeons, and Canadian Society of Surgical Oncology.

Carl Bergstrom

Carl Theodore Bergstrom is a theoretical and evolutionary biologist and a professor at the University of Washington in Seattle, with a secondary appointment at the Santa Fe Institute.

Clinical and Vaccine Immunology

Clinical and Vaccine Immunology (CVI) is a peer-reviewed journal published by the American Society for Microbiology. CVI enhances our understanding of the immune response in health and disease by showcasing important clinically relevant research, including new animal models for human immunologic diseases, viral immunology, immunopathogenesis, and clinical laboratory immunology. In particular, the journal highlights important discoveries in immunization and vaccine research, such as the development and evaluation of vaccines, human and animal immune responses to vaccines, vaccine vectors, adjuvants and immunomodulators, quantitative assays of vaccine efficacy, and clinical trials. The journal publishes primary research articles, editorials, commentaries, minireviews, and case reports. Articles are freely accessible after 6 months (delayed open access). Through its "Global Outreach Program," free online access is available to qualified microbiologists in eligible developing countries.

Computers in Biology and Medicine

Computers in Biology and Medicine is a monthly peer-reviewed scientific journal established in 1970. It covers the intersection of biomedical engineering, computational biology, bioinformatics, and computers. Articles are published both in print and online. The journal accepts original research articles, reviews, tutorials, editorials and letters. The Impact Factor is 2.115 (2017). The 5 year Impact Factor is 2.168 (2017). Based on Eigenfactor score (includes quality of citing journals) and Immediacy Index (considers first year citations of published papers), the journal is ranked 23rd of 78 bioengineering journals in 2017 (29th percentile).


The h-index is an author-level metric that attempts to measure both the productivity and citation impact of the publications of a scientist or scholar. The index is based on the set of the scientist's most cited papers and the number of citations that they have received in other publications. The index can also be applied to the productivity and impact of a scholarly journal as well as a group of scientists, such as a department or university or country. The index was suggested in 2005 by Jorge E. Hirsch, a physicist at UC San Diego, as a tool for determining theoretical physicists' relative quality and is sometimes called the Hirsch index or Hirsch number.

Human Biology (journal)

Human Biology is a peer reviewed scientific journal, currently published by Wayne State University Press. The journal was established in 1929 by Raymond Pearl and is the official publication of the American Association of Anthropological Genetics. The focus of the journal is human genetics, covering topics from human population genetics, evolutionary and genetic demography and quantitative genetics. It also covers ancient DNA studies, evolutionary biological anthropology, and research exploring biological diversity expressed in terms of adaptation. The journal also publishes interdisciplinary research linking biological and cultural diversity from evidence such sources as archaeology, ethnography and cultural anthropology studies, and more. As of July 1, 2016, the journal is on Volume 87, Issue 3. The journal's current editors are Brian M. Kemp (Washington State University) and Ripan S. Malhi (University of Illinois Urbana-Champaign).

Impact factor

The impact factor (IF) or journal impact factor (JIF) of an academic journal is a measure reflecting the yearly average number of citations to recent articles published in that journal. It is frequently used as a proxy for the relative importance of a journal within its field; journals with higher impact factors are often deemed to be more important than those with lower ones. The impact factor was devised by Eugene Garfield, the founder of the Institute for Scientific Information. Impact factors are calculated yearly starting from 1975 for journals listed in the Journal Citation Reports.

Journal of Biological Chemistry

The Journal of Biological Chemistry is a weekly peer-reviewed scientific journal that was established in 1905. Since 1925, it is published by the American Society for Biochemistry and Molecular Biology. It covers research in areas of biochemistry and molecular biology. The editor-in-chief is Lila Gierasch. All its articles are available free after one year of publication. In press articles are available free on its website immediately after acceptance.

Journal of Structural Engineering

The Journal of Structural Engineering is the principal professional peer-reviewed journal of the American Society of Civil Engineers, the oldest professional civil engineering society in the United States. The journal is one of the flagship journals of the Society. It is sponsored by its division, the ASCE Structural Engineering Institute.

Journal ranking

Journal ranking is widely used in academic circles in the evaluation of an academic journal's impact and quality. Journal rankings are intended to reflect the place of a journal within its field, the relative difficulty of being published in that journal, and the prestige associated with it. They have been introduced as official research evaluation tools in several countries.

List of earth and atmospheric sciences journals

This list presents notable scientific journals in earth and atmospheric sciences and its various subfields.

Palaeogeography, Palaeoclimatology, Palaeoecology

Palaeogeography, Palaeoclimatology, Palaeoecology ("Palaeo3") is a peer-reviewed scientific journal publishing multidisciplinary studies and comprehensive reviews in the field of palaeoenvironmental geology. The journal is edited by D. J. Bottjer, T. Corrège, A. P. Kershaw, and F. Surlyk. It was established in 1965 and is currently published by Elsevier.

Physical Review B

Physical Review B: Condensed Matter and Materials Physics (also known as PRB) is a peer-reviewed, scientific journal, published by the American Physical Society (APS). The Editor of PRB is Laurens W. Molenkamp. It is part of the Physical Review family of journals. The current Editor in Chief is Michael Thoennessen. PRB currently publishes over 4500 papers a year, making it one of the largest physics journals in the world. According to the Journal Citation Reports, PRB's most recent impact factors have been 3.736 for 2014, 3.718 for 2015 and 3.836 for 2016.

SCImago Journal Rank

SCImago Journal Rank (SJR indicator) is a measure of scientific influence of scholarly journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from. A journal's SJR is a numeric value indicating the average number of weighted citations received during a selected year per document published in that journal during the previous three years. Higher SJR values are meant to indicate greater journal prestige.

The SJR indicator is a variant of the 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 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 inspired by, and using an algorithm similar to, PageRank.

The SJR indicator provides an alternative to the impact factor (IF) or average citations per document in a 2-year period, abbreviated as "Cites per Doc. (2y)".

Samuel Curtis Johnson Graduate School of Management

The Samuel Curtis Johnson Graduate School of Management is the graduate business school in the SC Johnson College of Business at Cornell University, a private Ivy League university located in Ithaca, New York. It was founded in 1946 and renamed in 1984 after Samuel Curtis Johnson, founder of S.C. Johnson & Son, following his family's $20 million endowment gift to the school in his honor—at the time, the largest gift to any business school in the world.The school is housed in Sage Hall and supports 58 full-time faculty members. There are about 600 Master of Business Administration (MBA) students in the full-time two-year (2Y) and Accelerated MBA (1Y) programs and 375 Executive MBA students. The school counts over 15,200 alumni and publishes the academic journal Administrative Science Quarterly.

The Journal of Neuroscience

The Journal of Neuroscience is a weekly peer-reviewed scientific journal published by the Society for Neuroscience. It covers empirical research on all aspects of neuroscience. Its editor-in-chief is Marina Picciotto (Yale University). According to the Journal Citation Reports, the journal had a 2014 impact factor of 6.344 and an Eigenfactor of 0.413, which is almost twice as high as the next highest neuroscience journal.

The Movement Disorder Society

The International Parkinson and Movement Disorder Society (MDS) is a professional society of clinicians, scientists, and other healthcare professionals who are interested in movement disorders. The field of Movement Disorders includes the following areas: Parkinson's disease and parkinsonism, ataxia, dystonia, chorea and Huntington's disease, tics and Tourette syndrome, myoclonus and startle, restless leg syndrome, stiff person syndrome, tremor and essential tremor, spasticity, and gait disorders.

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