rec-index
The rec-index (Levene et al. 2019) is the area of the largest rectangle which can fit under the citation curve; similar to how h2 is the area of the largest square.
Example
Publications are ordered by number of citations, from highest to lowest.
Citations (Ci) | 47 | 26 | 19 | 15 | 11 | 10 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Rank (i) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
i×Ci | 47 | 52 | 57 | 60 | 55 | 60 | 28 | 24 | 18 | 10 | 11 | 12 | 13 | 0 | 0 | 0 | 0 | 0 |
The largest rectangle which can fit under the citation curve has an area of 60.
History
Year | rec |
---|---|
1997 | 2 |
1998 | 8 |
1999 | 26 |
2000 | 35 |
2001 | 60 |
2002 | 110 |
2003 | 168 |
2004 | 273 |
2005 | 390 |
2006 | 580 |
2007 | 756 |
2008 | 930 |
2009 | 1080 |
2010 | 1254 |
2011 | 1392 |
2012 | 1708 |
2013 | 2124 |
2014 | 2385 |
2015 | 2497 |
2016 | 2868 |
2017 | 3012 |
2018 | 3146 |
2019 | 3354 |
2020 | 3601 |
2021 | 3850 |
2022 | 3934 |
2023 | 4041 |
2024 | 4068 |
References
- Levene, M., T. Fenner, and J. Bar-Ilan (2019) Characterisation of the χ-index and the rec-index. Scientometrics 120:885-896.