The Eigenfactor Score is calculated using a complex algorithm that involves several steps. First, it counts the number of times articles from a journal published in the past five years have been cited in the Journal Citation Reports (JCR) database. Then, it weights these citations based on the influence of the citing journals. Citations from highly influential journals are given more weight than those from less influential ones. Finally, the score is normalized to account for the total number of articles published by the journal.
