α-index
The α-index (Abt 2012; Burrell 2012; Sangwal 2012) is a variant of the h-rate where the h-index is divided by number of decades since an author's first publication, or
$$\alpha = \frac{h}{Y_D},$$where
$$Y_D = \text{ceiling}\left( \frac{Y-Y_0+1}{10}\right).$$History
| Year | α |
|---|---|
| 1997 | 1.0000 |
| 1998 | 2.0000 |
| 1999 | 3.0000 |
| 2000 | 5.0000 |
| 2001 | 6.0000 |
| 2002 | 8.0000 |
| 2003 | 11.0000 |
| 2004 | 12.0000 |
| 2005 | 15.0000 |
| 2006 | 17.0000 |
| 2007 | 9.5000 |
| 2008 | 10.5000 |
| 2009 | 12.5000 |
| 2010 | 13.0000 |
| 2011 | 14.5000 |
| 2012 | 16.0000 |
| 2013 | 16.5000 |
| 2014 | 17.0000 |
| 2015 | 17.5000 |
| 2016 | 17.5000 |
| 2017 | 12.3333 |
| 2018 | 12.3333 |
| 2019 | 12.3333 |
| 2020 | 12.6667 |
| 2021 | 13.3333 |
| 2022 | 13.6667 |
| 2023 | 14.0000 |
| 2024 | 14.0000 |
References
- Abt, H.A. (2012) A publication index that is independent of age. Scientometrics 91:863–868.
- Burrell, Q.L. (2012) Comments on "A publication index that is independent of age" by Abt. Scientometrics 91:1059–1060.
- Sangwal, K. (2012) On the age-independent publication index. Scientometrics 91:1053–1058.