Explains about Impact Factor, h-index, g-index, i10-index with examples and comparisons

1. Mohamed Adam K
April - 21st - 2022
Research Metrics

2. Research Metrics
Quantitative tool used to assess the quality and impact of
research outputs.
Metrics are available for use at the journal, article, researcher
and even department / institute etc.,
 G r a n t A l l o c a t i o n
 B e n c h m a r k i n g
 H i r i n g & P r o m o t i o n s
 M a k i n g t h e r i g h t i n v e s t m e n t
 R e v i e w i n g f a c u l t y / d e p a r t m e n t
Reason for the assessment

3. Journal Impact Factor
A journal published in the above example, has an average probability of
being cited 0.5 times in the next 2 years.

4. 5 year - Journal Impact Factor

5. Author Metrics
Rates a scientist’s performance based on
his/her career publications, as measured by the lifetime
number of citations each article receives.
 h - i n d e x
 g - i n d e x
 i 1 0 - i n d e x
 a l t m e t r i c s
A single metric should never be considered in isolation.

6. h-index
Author-level research metric, it attempts to measure the
productivity of a researcher and the citation impact of their
publications.
The index was suggested in 2005 by Jorge E. Hirsch, a
physicist at UC San Diego, as a tool for
determining theoretical physicists' relative quality and is
sometimes called the Hirsch index or Hirsch number.
Number of articles published which have received
the same number of citations.
h-index: 8

7. h-index
Number of articles published which have received
the same number of citations.

8. Advantages of the h-index
Disadvantages of the h-index
Results are not skewed
Upwards by a small number of highly-cited papers.
Downwards by a long tail of poorly-cited work.
Results can be inconsistent
h-index calculated using different databases or time-frames,
gives different results.
Results can be skewed by self-citations
Results are not comparable across disciplines
Results can not be compared between researchers
The h-index of a researcher with a long publication history
including review articles cannot be fairly compared with a initial
level researcher

9. h-index: 6 h-index: 5 h-index: 5
h-index (Comparison)
h-index: 201 h-index: 130

10. Unique largest number such that the top g articles
received together at least g² citations.
A g-index of 20 means that an academic has published at least 20
articles that combined have received at least 400 citations.
Accounts for the performance of author’s top rated articles.
Might not widely accepted as h-index.
g-index
h-index: 8 g-index: 12

11. i10-index
The number of publications with at least 10 citations.
Created by Google Scholar and used in
Google's My Citations feature.
h-index: 8 i10-index: 7

12. h / g / i10 -indices (Comparison)
Author - A Author - B Author - C
h-index 6 5 5
i10-index 1 4 5
g-index 6 8 8

13. Thank you…