Hirsch proportionality constant
Properties
- Metric Type: Core Property
- Publication Focus: All Publications, Core Publications
- Citation Focus: All Citations, Core Citations
Description
This metric (Hirsch 2005) describes a relationship between the h-index and the total citations and is defined as
$$a=\frac{C^P}{h^2}.$$History
| Year | a |
|---|---|
| 1997 | 2.0000 |
| 1998 | 1.7778 |
| 1999 | 4.8889 |
| 2000 | 3.4000 |
| 2001 | 4.1111 |
| 2002 | 4.0312 |
| 2003 | 3.9900 |
| 2004 | 4.4375 |
| 2005 | 4.1867 |
| 2006 | 5.2773 |
| 2007 | 4.9557 |
| 2008 | 5.1066 |
| 2009 | 4.7656 |
| 2010 | 5.3648 |
| 2011 | 5.1735 |
| 2012 | 4.6357 |
| 2013 | 5.0643 |
| 2014 | 5.3893 |
| 2015 | 5.6751 |
| 2016 | 6.2686 |
| 2017 | 6.0855 |
| 2018 | 6.5727 |
| 2019 | 7.0621 |
| 2020 | 7.1676 |
| 2021 | 7.2840 |
| 2022 | 7.0143 |
| 2023 | 7.3902 |
| 2024 | 7.4076 |
| 2025 | 6.9298 |
References
- Hirsch, J.E. (2005) An index to quantify an individual's scientific research output. Proceedings of the National Academy of Sciences USA 102(46):16569–16572.