Citation searchingand bibliometrics<br />Olof DannbergAlnarp Library<br />
Agenda<br />Citation searching – an introduction<br />What is bibliometrics?<br />Web of Science<br />What is Journal Impa...
Bibliometrics<br />“statistical analysis of books, articles, or other publications” <br />(The Oxford Dictionary of Englis...
Bibliometrics<br />Citation analysis in one method used in bibliometrics<br />By analyzing citations at article level you ...
Exercise: Web of Science<br />Do a search on your own subject (one or two keywords only) <br />Sort by Times Cited<br />Ho...
h-index<br />Hirsch-index<br />The value of h is equal to the number of papers (n) in the list that have n or more citatio...
Exercise: Web of Science<br />Which article by an Alnarp researcher is the most cited? <br />Use Author Finder to find all...
Exercise: Scopus<br />Do a search on your own subject (one or two keywords only)<br />Sort by citations<br />Is the most c...
ImpactFactor<br />
Ohter JCR measures<br />5-Year Impact Factor<br />The impact factor calculated for 5 years instead of 2<br />Immediacy Ind...
Exercise: Journal Citation Reports<br />Select to view all journals in your own subject area<br />Which journal has the hi...
Criticism of IF<br />Coverage<br />English language bias<br />Books are not included<br />Subject differences<br />Citatio...
Alternatives: journal level<br />Eigenfactor<br />Includes more sources, not only journal articles<br />Measures citations...
Alternatives: journal level<br />SCImago Journal Rankwww.scimagojr.com<br />Based on citation data from Scopus<br />Measur...
SCImago vs. JCR<br />
Exercise: SCImago<br />Look at the journal rankings in your own subject area<br />Compare with the Impact Factor in JCR<br...
Alternatives: articlelevel<br />Usage statistics<br />Open Access journals often use download statistics as an indicator<b...
Alternatives: articlelevel<br />Faculty of 1000 	f1000.com<br />Qualitativeevaluation<br />Evaluates the most important ar...
Summary<br />Citation searching is useful as an alternative to keyword searching<br />Bibliometrics give you comparable qu...
Further readings<br />SLU University Library (2010). Bibliometrics. Accessible: http://www.slu.se/en/library/publish/einde...
“Not everything that can be counted counts, and not everything that counts can be counted”<br />  Albert Einstein <br />
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Citation Searching & Bibliometrics

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Citation Searching & Bibliometrics

  1. 1. Citation searchingand bibliometrics<br />Olof DannbergAlnarp Library<br />
  2. 2. Agenda<br />Citation searching – an introduction<br />What is bibliometrics?<br />Web of Science<br />What is Journal ImpactFactor?<br />Journal Citation Reports<br />Criticism of IF and some alternatives<br />
  3. 3. Bibliometrics<br />“statistical analysis of books, articles, or other publications” <br />(The Oxford Dictionary of English)<br />
  4. 4. Bibliometrics<br />Citation analysis in one method used in bibliometrics<br />By analyzing citations at article level you can estimate the popularity and impact of specific articles and authors<br />By counting citations at journal level you can calculate the Journal Impact Factor<br />
  5. 5. Exercise: Web of Science<br />Do a search on your own subject (one or two keywords only) <br />Sort by Times Cited<br />How many times has the most cited research article been cited?<br />Did you know about this article before?<br />
  6. 6. h-index<br />Hirsch-index<br />The value of h is equal to the number of papers (n) in the list that have n or more citations<br />Example:<br />An h-index of 4 means that that you have 4 articles that have been cited at least 4 times.<br />
  7. 7. Exercise: Web of Science<br />Which article by an Alnarp researcher is the most cited? <br />Use Author Finder to find all articles by your supervisor (or yourself) <br />What is the h-index?<br />
  8. 8. Exercise: Scopus<br />Do a search on your own subject (one or two keywords only)<br />Sort by citations<br />Is the most cited article the same as in Web of Science?<br />Has it been cited by other scientific web sources (theses, dissertations etc)?<br />
  9. 9. ImpactFactor<br />
  10. 10. Ohter JCR measures<br />5-Year Impact Factor<br />The impact factor calculated for 5 years instead of 2<br />Immediacy Index<br />How many times articles have been cited within one year. Indicates which journals are publishing “hot” articles<br />Cited Half-Life<br />The median age of the journal’s articles cited in the current JCR year. Indicates the long-termvalue of the articles<br />
  11. 11. Exercise: Journal Citation Reports<br />Select to view all journals in your own subject area<br />Which journal has the highest Impact Factor in this subject?<br />Did you expect this journal to be in top?<br />
  12. 12. Criticism of IF<br />Coverage<br />English language bias<br />Books are not included<br />Subject differences<br />Citation behavior varies between subject areas<br />Methodological flaws<br />Negative citations<br />Self-citations<br />Misprints and title changes<br />Misuse <br />Authors and editors manipulate the IF by strategic publishing and in-house citations<br />
  13. 13. Alternatives: journal level<br />Eigenfactor<br />Includes more sources, not only journal articles<br />Measures citations to articles published in the last 5 years<br />Citations from highly-ranked journals are given a higher value, similar to Google’s PageRank algorithm<br />
  14. 14. Alternatives: journal level<br />SCImago Journal Rankwww.scimagojr.com<br />Based on citation data from Scopus<br />Measures citations to articles published in the last 3 years<br />Uses a Google-like ranking algorithm, just like the Eigenfactor<br />Example:SCImago Journal Rankings<br />
  15. 15. SCImago vs. JCR<br />
  16. 16. Exercise: SCImago<br />Look at the journal rankings in your own subject area<br />Compare with the Impact Factor in JCR<br />Are there any differences?<br />
  17. 17. Alternatives: articlelevel<br />Usage statistics<br />Open Access journals often use download statistics as an indicator<br />BioMed Central www.biomedcentral.com<br />PLoSwww.plos.org<br />
  18. 18. Alternatives: articlelevel<br />Faculty of 1000 f1000.com<br />Qualitativeevaluation<br />Evaluates the most important articles in biology and medicine<br />Researchers and cliniciansrates and comment on papers they read<br />Example:f1000.com/3509957<br />
  19. 19. Summary<br />Citation searching is useful as an alternative to keyword searching<br />Bibliometrics give you comparable quantitative data about scientific publications<br />The usefulness and reliability of the methods have been questioned <br />New methods for evaluation have arisen, quantitative and qualitative, but have yet to gain wider acceptance as replacement for citation counts and Impact Factor<br />
  20. 20. Further readings<br />SLU University Library (2010). Bibliometrics. Accessible: http://www.slu.se/en/library/publish/eindex/<br />Vice-chancellor's decision about affiliation ... 2010-01-02 (Swedish)<br />Garfield, E. (1994). The concept of citation indexing : a unique and innovative tool for navigating the research literature. Accessible: http://thomsonreuters.com/products_services/science/free/essays/concept_of_citation_indexing/<br />
  21. 21. “Not everything that can be counted counts, and not everything that counts can be counted”<br /> Albert Einstein <br />

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