q2-index
The q2-index (Cabrerizo et al. 2010) is another metric designed to describe the h-index core. It is the geometric mean of both a quantitative (h-index) and a qualitative (m-index) measure of the core,
$$q^2=\sqrt{h\times m}.$$History
| Year | q2 |
|---|---|
| 1997 | 1.0000 |
| 1998 | 3.0000 |
| 1999 | 6.2450 |
| 2000 | 7.0711 |
| 2001 | 10.0995 |
| 2002 | 13.5647 |
| 2003 | 13.6748 |
| 2004 | 22.0454 |
| 2005 | 26.5518 |
| 2006 | 27.3496 |
| 2007 | 29.8831 |
| 2008 | 35.1994 |
| 2009 | 38.7298 |
| 2010 | 44.0114 |
| 2011 | 49.0612 |
| 2012 | 49.1528 |
| 2013 | 55.3986 |
| 2014 | 61.7090 |
| 2015 | 61.7657 |
| 2016 | 64.2651 |
| 2017 | 66.0757 |
| 2018 | 68.0074 |
| 2019 | 69.0869 |
| 2020 | 67.2458 |
| 2021 | 69.1375 |
| 2022 | 75.2197 |
| 2023 | 77.6338 |
| 2024 | 77.9038 |
References
- Cabrerizo, F.J., S. Alonso, E. Herrera-Viedma, and F. Herrera (2010) q2-index: quantiative and qualitative evaluation based on the number and impact of papers in the Hirsch core. Journal of Informetrics 4:23–28.