Bibliometrics

  • 2,175 views
Uploaded on

Presentation given as part of the REF, Citations and Research Outputs trainng course (http://bit.ly/IX7aOH).

Presentation given as part of the REF, Citations and Research Outputs trainng course (http://bit.ly/IX7aOH).

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
No Downloads

Views

Total Views
2,175
On Slideshare
0
From Embeds
0
Number of Embeds
3

Actions

Shares
Downloads
73
Comments
0
Likes
5

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. Dan Holden
  • 2.  Limitations Assessment of research impact ◦ Calculating h-index using Web of Science and Publish or Perish Assessment of journal quality ◦ Calculating Impact Factor using Journal Citation Reports ◦ Calculating h-index using Publish or Perish ◦ Other metrics and tools
  • 3.  Metrics and tools not well established for arts, humanities and social sciences Citation patterns vary from subject to subject Coverage of tools is not comprehensive Self-citations can distort metrics Review articles are more highly cited than standard articles Citations to a paper may not reflect its quality Metrics tend not to account for age of researcher
  • 4.  Publication count ◦ Number of publications produced by individual, school or university Citation count ◦ Number of times publication is cited by other publications
  • 5.  h-index ◦ Defined as largest number h, where a researcher has at least h publications cited at least h times ◦ Eg an h-index of 25 tells us that an author has written 25 papers which have each been cited at least 25 times
  • 6.  Web of Science ◦ Covers over 11,500 journal titles and 120,000 conference proceedings ◦ Consists of:  Science Citation Index - 1970 to present  Social Sciences Citation Index - 1970 to present  Arts & Humanities Citation Index - 1975 to present ◦ Limited coverage of non-English language titles ◦ Does not include books, book chapters or theses
  • 7.  SCOPUS ◦ Covers over 18,000 journal titles and 4.4 million conference papers ◦ Better coverage of social science titles than Web of Science ◦ Better coverage of non-English language publications from Europe than Web of Science ◦ Citation data only available for papers published from 1996 onwards ◦ Does not include books, book chapters or theses
  • 8.  Publish or Perish ◦ Free analysis tool used in conjunction with Google Scholar ◦ Google Scholar covers much wider range of material than Web of Science or Scopus ◦ Better coverage of non-English language publications from Africa, Asia and Central and South America than Web of Science or Scopus ◦ No source list or indication of timescale covered
  • 9.  Journal Impact Factor (JIF) ◦ Average number of times articles published in journal in past 2 years have been cited in current year ◦ Eg title with JIF of 1 in 2010 means that articles published in 2008 or 2009 have been cited on average once in 2010
  • 10.  h-index ◦ Increasingly applied to journals ◦ Largest number h, where a journal has at least h of its articles cited at least h times ◦ Eg journal has an h-index of 10 if 10 of its papers have each been cited at least 10 times
  • 11.  Journal Citation Reports ◦ Produced using data from Science Citation Index and Social Sciences Citation Index ◦ Covers over 10,500 journals ◦ Reports from 2000 to 2010 are available Publish or Perish
  • 12.  SCImago Journal & Country Rank ◦ Free service ◦ Based on SCOPUS data ◦ Key metric is SCImago Journal Rank (SJR) indicator – underlying number of citations received by number of articles published calculation but citations are weighted depending on ‘prestige’ and subject area
  • 13.  Source-Normalized Impact per Paper (SNIP) ◦ Free service ◦ Based on SCOPUS data ◦ Underlying citations received by number of articles published calculation but divided by Citation Potential of subject area ◦ Citation Potential is likelihood of being cited in particular subject area ◦ SJR and SNIP are components of Journals Analyzer tool in SCOPUS
  • 14.  Eigenfactor ◦ Free service ◦ Eigenfactor Score (EFS) is like SJR but uses Web of Science data, self-citations are not included and citations are counted over 5 years rather than 3 years ◦ Article Influence Score (AIS) is average influence of journals articles. Calculated by dividing EFS by number of articles in journal (mathematically adjusted so it is comparable with other journals)
  • 15.  Eigenfactor www.eigenfactor.org Library’s A to Z list of databases (via QSearch) metalib.qub.ac.uk Library’s Bibliometrics pages: go.qub.ac.uk/ygaab Measuring Your Research Impact www.ndlr.ie/myri SCImago Journal & Country Rank www.scimagojr.com/ SCOPUS www.scopus.com Source-Normalized Impact per Paper (SNIP) www.journalmetrics.com/