Carl Theodore Bergstrom is a theoretical and evolutionary biologist and a professor at the University of Washington in Seattle, Washington , United States. Bergstrom is a critic of low-quality or misleading scientific research. He is the co-author of a book on misinformation called Calling Bullshit: The Art of Skepticism in a Data-Driven World and teaches a class by the same name at University of Washington.
6-511: 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 . 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. As a measure of importance,
12-541: A given number of citations, citations from more significant journals will result in a higher Eigenfactor score. 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 . It can also be used in combination with the h -index to evaluate the work of individual scientists. Carl Bergstrom Bergstrom earned his B.A. from Harvard University in 1993, then completed his Ph.D. at Stanford University under
18-517: 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. 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). The Article Influence score measures
24-412: 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. Eigenfactor scores and Article Influence scores (AIS) are calculated by eigenfactor.org , where they can be freely viewed. The Eigenfactor score
30-449: 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, which purely counts incoming citations without considering the significance of those citations. While the Eigenfactor score is correlated with total citation count for medical journals, these metrics provide significantly different information. For
36-434: The supervision of Marcus Feldman in 1998. Bergstrom's work concerns the flow of information through biological and social networks, as well as the ecology and evolution of pathogenic organisms , including the development of resistance . He is the coauthor (with Lee Dugatkin) of a college textbook, Evolution . With Jevin West, he developed the popular course and website Calling Bullshit. His work has led to
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