S-index (h-mixed synthetic index)
The S-index (Ye 2010) is an h-mixed synthetic index which combines multiple metrics together into a single value. It is calculated as
$$S=100\log_{10}\left(h \times C/P\right),$$where C/P is the mean number of citations per publication.
History
Year | S |
---|---|
1997 | -47.7121 |
1998 | 54.4068 |
1999 | 116.6331 |
2000 | 144.4937 |
2001 | 167.2098 |
2002 | 196.5501 |
2003 | 222.5210 |
2004 | 241.9557 |
2005 | 260.1439 |
2006 | 280.2222 |
2007 | 294.0542 |
2008 | 306.1425 |
2009 | 318.3586 |
2010 | 323.1799 |
2011 | 332.9598 |
2012 | 343.3290 |
2013 | 346.7195 |
2014 | 351.9299 |
2015 | 355.9791 |
2016 | 359.0354 |
2017 | 364.3070 |
2018 | 364.7045 |
2019 | 367.2050 |
2020 | 370.7225 |
2021 | 374.7834 |
2022 | 375.8727 |
2023 | 378.6481 |
2024 | 378.4826 |
References
- Ye, F.Y. (2010) Two H-mixed synthetic indices for the assessment of research performance. Journal of Library and Information Studies 8:1–9.