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Open Access: Impact Factor

Limitations of the Impact Factor

Measuring the Importance of Journals and Articles

  • Journal Citation Reports
    Journal Citation Reports® offers a means to critically evaluate the world's leading journals based on citation data. By compiling articles' cited references, JCR helps to measure research influence and impact at the journal and category levels, and shows the relationship between citing and cited journals.
  • Eigenfactor
    This web source is used to evaluate journal titles; it ranks and maps scientific knowledge. Eigenfactor includes Article Influence scores which are calculated based on per article citations and assigns Eigenfactor Scores which are a measure of the journal's value for a year. Use the scientific browser to find key journals in a specific field of study.
  • PLoS Biology
    A peer-reviewed open-access journal published by the Public Library of Science. Includes articles, essays and book reviews addressing biological science. Article level metrics (article views) are included in each article record.
  • Journal of Medical Internet Research
    JMIR focuses on emerging technologies in health, medicine, and biomedical research. It includes studies and applications of mobile technologies and social media which often use the Internet as an underlying technology. JIMR provides article level metrics including most viewed, most cited, most tweeted and most purchased.

PLoS: Article Level Metrics

Subject Guide