Part 2 Author metrics
Dec 22, 2014
Part 2
Author metrics
Citation metrics• h-index (Hirsch, 2005)– An author’s number of articles (h) that have
received at least h citations – a researcher with an h-index of 10 has
published 10 articles that have each been cited at least 10 times
• g-index (Egghe, 2006)– The highest number (g) of papers that together
received g2 or more citations – a researcher with a g-index of 10 has published
10 papers that together have been cited at least 100 times
H-index
Author: Smith, JHas written and published 9 articles (a-i), which have been cited as follows:
a:3, b:6, c:6, d:2, e:13, f:3, g:0, h:1, i:3
“no. of articles (n) that have received at least n citations”
Author: Smith, JHas written and published 9 articles (a-i), which have been cited as follows:
a:3, b:6, c:6, d:2, e:13, f:3, g:0, h:1, i:3
H-index: 3 (at least 3 References with 3 or more citations)
“no. of articles (n) that have received at least n citations”
Author: Smith, JHas written and published 9 articles (a-i), which have been cited as follows:
a:3, b:6, c:6, d:2, e:13, f:3, g:0, h:1, i:3
H-index: 3 (at least 3 References with 3 or more citations)
“no. of articles (n) that have received at least n citations”
Author: Smith, JHas written and published 9 articles (a-i), which have been cited as follows:
a:3, b:6, c:6, d:2, e:13, f:3, g:0, h:1, i:3
H-index: not 4 (only 3 References have 4 or more citations)
“no. of articles (n) that have received at least n citations”
G-index
Author: Smith, JHas written and published 9 articles (a-i), which have been cited as follows:
a:3, b:6, c:6, d:2, e:13, f:3, g:0, h:1, i:3
“The highest number (g) of papers that together received g2 or more citations”
Author: Smith, JHas written and published 9 articles (a-i), which have been cited as follows:
a:3, b:6, c:6, d:2, e:13, f:3, g:0, h:1, i:3
G-index: 5 (5x5 =25… top 5 cited articles= 31)
“The highest number (g) of papers that together received g2 or more citations”
Author: Smith, JHas written and published 9 articles (a-i), which have been cited as follows:
a:3, b:6, c:6, d:2, e:13, f:3, g:0, h:1, i:3
G-index: not 5 (6x6 =36… top 5 cited articles= 34)
“The highest number (g) of papers that together received g2 or more citations”
Web of Science• Track citations to your publications – Check who is citing your publications. Graph
your citations over time. Compute citation metrics.
• View publications by colleagues – Keep up with their work. See their citation
metrics.
• Appear in Google Scholar search results – Create a public profile using ResearcherID
that you can link to from a profile page, online cv, email signature or social media account.
This author has 41 articles which have been cited at least 41 times each.
This author has 41 articles (which are indexed on Web of Science) which have been cited at least 41 times each (on
Web of Science)
Google Scholar• Track citations to your publications – Check who is citing your publications. Graph
your citations over time. Compute citation metrics.
• View publications by colleagues – Keep up with their work. See their citation
metrics.
• Appear in Google Scholar search results – Create a public profile that can appear in
Google Scholar when someone searches for your name.
The same author has 46 articles which have been cited at least 46 times each.
The same author has 46 articles (which are indexed on Google Scholar) which have been
cited at least 46 times each (on Google Scholar)
Issues• Author identification• Register on ResearcherID - eg
Dr Dan Smith• Citation cultures vary across disciplines and
are not comparable• Publication cultures vary too• Research careers have different stages• Impact does not always = excellence• Scholarly communication evolving is
evolving beyond just citations in peer-reviewed articles
Image Credits[Slide 25] Via Flickr Creative Commons, by geishaboy500. Original at http://www.flickr.com/photos/49503154413@N01/2326873674