1 / 12

Bibliometrics & Impact Factors

Bibliometrics & Impact Factors. University of Idaho Library Workshop Series October 15 th , 2009. Summary. Overview Journal Impact and Ranking Individual Impact Questions. Why do I need to know this?. Funding Agencies Promotion and Tenure Committees Journal Purchasing Awards.

norah
Télécharger la présentation

Bibliometrics & Impact Factors

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Bibliometrics& Impact Factors University of Idaho Library Workshop Series October 15th, 2009

  2. Summary • Overview • Journal Impact and Ranking • Individual Impact • Questions

  3. Why do I need to know this? • Funding Agencies • Promotion and Tenure Committees • Journal Purchasing • Awards

  4. Journal Rankings • 3 tools/measurements to use • Impact Factor (Thomson Scientific/ISI) • Eigenfactor (Eigenfactor.org) • Scimago Journal Rank (Scimago)

  5. Journal Ranking Journal Impact Factor • Created by Thomson Scientific (ISI) • Reported in Journal Citation Reports (JCR) • Determined using Web of Science , or • Science Citation Index/Social Sciences Citation Index Times cited in 2008 (to items published in 2006-2007) JIF = Number of ‘citable items’ published in 2006-07* *Citable items are research articles, review articles and proceedings articles

  6. Impact Factor • Advantages: • Simple • Recognized • Has Longevity • Disadvantages: • Can be artificially inflated • All citations count the same • Problems with ISI data

  7. Journal Ranking • Eigenfactor • Created by Carl Bergstrom, Univ. Washington • Freely available at Eigenfactor.org • Uses network analysis to determine significant journals

  8. Journal Rankings • Scimago Journal Ranking (SJR) • Created by Scimago Research Group (Spain) • Uses data from Scopus citation database • Like the Impact Factor, but weights citations • Scimago Journal & Country Rank

  9. Individual Impact • h-index • Created in 2005 by J.E. Hirsch • Very simple, clear • Shows both productivity and quality h index = h articles which have been cited at least h times

  10. Individual Impact • Caveats: • Not cross-disciplinary • Does not account for highly cited items • Changes over time Median for the biosciences = 147 Median for physics = 75

  11. Individual Impact • Web of Science • Automatic or manual • Google Scholar • Usable, but beware!

  12. Questions?

More Related