1. BIBLIOMETRICS & IMPACT FACTORS University of Idaho Library Workshop Series October 15 th, 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, orWeb of Science  Science Citation Index/Social Sciences Citation Index Times cited in 2008 (to items published in 2006-2007) Number of ‘citable items’ published in 2006-07* JIF = *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.orgEigenfactor.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 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 Web of Science  Automatic or manual  Google Scholar Google Scholar  Usable, but beware!

12. Questions?