Hirsch proportionality constant
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 | 3.5000 |
| 1999 | 4.8889 |
| 2000 | 3.1200 |
| 2001 | 3.9167 |
| 2002 | 3.9688 |
| 2003 | 3.2810 |
| 2004 | 4.4097 |
| 2005 | 4.1422 |
| 2006 | 4.6471 |
| 2007 | 4.9584 |
| 2008 | 5.0998 |
| 2009 | 4.3952 |
| 2010 | 4.9482 |
| 2011 | 4.8169 |
| 2012 | 4.6348 |
| 2013 | 5.0588 |
| 2014 | 5.3832 |
| 2015 | 5.6710 |
| 2016 | 6.2661 |
| 2017 | 6.0752 |
| 2018 | 6.5690 |
| 2019 | 7.0511 |
| 2020 | 7.1510 |
| 2021 | 6.9069 |
| 2022 | 6.9929 |
| 2023 | 7.0170 |
| 2024 | 7.0726 |
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.