H index

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what h-index is and how to find it

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H index

  1. 1. Research Impact H-index
  2. 2. H index What is the h-index? I propose the index h, defined as the number of papers with citation number equal to or greater than h, as a useful index to characterise the scientific output of a researcher (Hirsch, 2005)
  3. 3. H index The h index takes into account two things: 1. The researcher’s PRODUCTIVITY (number of publications a researcher has produced) 2. The IMPACT of that researcher’s publications (how many citations the researcher’s publications have received)
  4. 4. Example Number of Documents NumberofCitations You can see on the horizontal axis that this researcher has published 40 items. You can see on the vertical axis that the most highly cited paper by this author was cited 65 times. Each of the dots in the graph represent an individual publication by this researcher. This author’s h index is highlighted by the red circle. This represents the point where at least h number of papers have been cited at least h times each. In this example, the h index is 15. That is, 15 papers have been published by this author which themselves have each been cited at least 15 times.
  5. 5. Number of Documents NumberofCitations Why isn’t the h index 16? Or 17? As you can see, the 16th document has only been cited 14 times. This document would need to be cited 16 times in order for the h index to increase to 16. Further, it is also necessary that the first 15 documents also be cited at least 16 times each. The grey diagonal line in the graph represents the h index line.
  6. 6. How do I find my h-index? Although you can manually calculate a researcher’s h index by gathering a list of all their publications, listing them in order of citation counts and then finding the point at which the highest number of papers (h) have been cited at least h times each, a number of research databases will calculate the h index for you!* 1. Scopus 2. Web of Science 3. Google Scholar… via Scholar Profile or ‘Publish or Perish’ *Note: h index may vary slightly depending on source (e.g. WOS, Scopus, Google Scholar)
  7. 7. 1. Scopus Steps: 1. Do Author search 2. Click on author’s name in the search results 3. H index is provided underneath the Research heading (a number of other indicators of research output are also provided here) See video (1.4 mins): https://www.youtube.com/watch?v=xqU6uK4lWwo
  8. 8. 2. Web of Science Steps: 1. Search for researcher name and select Author from drop down menu 2. Click create citation report See video (6 mins) https://www.youtube.com/watch?v=7qssEKTHQII&list=PLM1kuGdwRdGmuLNfYwjtj0cqt1tn6jljV
  9. 9. 3. Google Scholar Two ways to get a researcher’s h index in Google Scholar: 1. Google Scholar Profile (you need to created one) 2. If no scholar profile, download Publish or Perish and use it to calculate a researcher’s h index using Google Scholar data
  10. 10. Google Scholar 1. Google Scholar Profile Steps: 1. Go to Google scholar 2. Search for researcher 3. Click on their Scholar profile in the search results
  11. 11. Google Scholar 2. via Publish or Perish Steps: 1. After searching Google Scholar and not finding a researcher profile, download Publish or Perish software to your computer 2. Open Publish or Perish 3. Search the author’s name in the author’s name field 3. Click lookup

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