ar-index
The ar-index (Jin 2007; Jin et al. 2007) is an adaptation of the R-index which includes time. Rather than being the square-root of the total citations within the core, it is the square-root of the citations per year within the core,
$$ar=\sqrt{\sum\limits_{i=1}^{h}{\frac{C_i}{Y-Y_i+1}}},$$where Y is the current year.
History
Year | ar |
---|---|
1997 | 1.0000 |
1998 | 2.8284 |
1999 | 3.6286 |
2000 | 4.4347 |
2001 | 5.5408 |
2002 | 7.4677 |
2003 | 8.9675 |
2004 | 10.9680 |
2005 | 12.7129 |
2006 | 14.3248 |
2007 | 15.5255 |
2008 | 16.7775 |
2009 | 17.8566 |
2010 | 18.4934 |
2011 | 23.6398 |
2012 | 23.7216 |
2013 | 24.0850 |
2014 | 24.3352 |
2015 | 24.6657 |
2016 | 24.7126 |
2017 | 24.7891 |
2018 | 24.7529 |
2019 | 24.7066 |
2020 | 24.9217 |
2021 | 25.0222 |
2022 | 25.1362 |
2023 | 25.0264 |
2024 | 25.0509 |
2025 | 25.8335 |
References
- Jin, B. (2007) The ar-index: Complementing the h-index. ISSI Newsletter 3(1):6.
- Jin, B., L. Liang, R. Rousseau, and L. Egghe (2007) The R- and AR-indices: Complementing the h-index. Chinese Science Bulletin 52(6):855–863.