1 / 27

Bibliometric research methods

Bibliometric research methods. Faculty Brown Bag IUPUI Cassidy R. Sugimoto. Overview . Vocabularly Citation analysis Citation indices Bibliometric laws Impact factor Applications. Vocabulary. Scholarly Communications Formal and information Scientometrics Scientific communication

Download Presentation

Bibliometric research methods

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. Bibliometric research methods Faculty Brown Bag IUPUI Cassidy R. Sugimoto

  2. Overview • Vocabularly • Citation analysis • Citation indices • Bibliometric laws • Impact factor • Applications

  3. Vocabulary • Scholarly Communications • Formal and information • Scientometrics • Scientific communication • Infometrics • Thinking beyond scholarly “texts” • Webometrics • web • Bibliometrics • Application of statistical and mathematical methods (formal channels)

  4. Citation analysis • Why do people cite? • Why are some articles not cited? • What does a citation mean? Cited document Citing document A B A references B B is cited by A

  5. Who’s on first? Embedded citation index from ` En mishpat: Babylonian Talmud (1546) (Weinberg, 1997) Shepard’s Citation Index (1873) Shapiro (1992)

  6. Institute for Scientific Information (ISI)

  7. Scopus

  8. GoogleScholar

  9. Scopus n=7,333 (86%) Web of Science n=6,108 (71%) Scopus 29% (2,441) Overlap 57% (4,892) Web of Science 14% (1,216) Comparison Distribution of unique and overlapping citations in Scopus and Web of Science (n=8,549)

  10. Are you a citation index?

  11. Bibliometric research OR “Why I love good indexes”

  12. Cited document Citing document A B A references B B is cited by A Citation analysis

  13. Citation analysis: methods Not just articles…

  14. Variable:PRODUCERS

  15. Variable:PRODUCERS

  16. Variable:ARTIFACTS

  17. Variable:CONCEPTS

  18. Hybrid approaches Chaomei Chen: http://www.pages.drexel.edu/~cc345/citespace/figures/terrorism1990-2003-300dpi.png

  19. h-index • Hirsch (2005) • A scientist has index h if h of [his/her] Np papers have at least h citations each, and the other (Np − h) papers have at most h citations each.

  20. Bibliometric laws • Lotka’s Law (1926) the number (of authors) making n contributions is about 1/n² of those making one; and the proportion of all contributors, that make a single contribution, is about 60 percent (60,15,7…6>10) Not statistically exact May be changing with the current model of scholarship

  21. Bibliometric laws • Bradford’s law (1934) • Journals in a field can be divided into three parts: • Core: relatively few # of journals producing 1/3 of all articles • Zone 2: same # of articles, but > # of journals • Zone 3: same # of articles, but > # of journals • The mathematical relationship of the number of journals in the core to the first zone is a constant n and to the second zone the relationship is n². 1:n:n² Not statistically exact General power law distribution (akin to Pareto’s law in economics)

  22. Bibliometric laws • Zipf’s Law (1935) listing the words occurring within that text in order of decreasing frequency, the rank of a word on that list multiplied by its frequency will equal a constant. The equation for this relationship is: r x f = k where r is the rank of the word, f is the frequency, and k is the constant James Joyce's Ulysses 10th most frequent: 2,653 times 100th most frequent: 265 times 200th most frequent: 133 times rank of the word multiplied by the frequency of the word equals a constant that is approximately 26,500 Not statistically exact General power law probability distribution

  23. Bibliometric laws • Other power law probability distributions • Pareto’s law (economics) • 80-20 rule • Law of the vital few • Principle of factor sparsity • PageRank (google) • The Long Tail (markets)

  24. Journal impact factors

  25. As a research method… • Reliability? • Validity? • Limitations?

  26. Applications? • Finding and use • Collection development • Reference services • Collection evaluation • Use studies • Information retrieval algorithms • Diffusion of ideas • Domain areas and interdisciplinarity • Mapping science

  27. Writing your paper…

More Related