T-index (h-mixed synthetic index)
The T-index (Ye 2010) is an h-mixed synthetic index which combines multiple metrics together into a single value. It is calculated as
$$T=100\log_{10}\left(R\times h \times C/P\right),$$where R is the R-index and C/P is the mean number of citations per publication.
History
| Year | T |
|---|---|
| 1997 | -47.7121 |
| 1998 | 128.9713 |
| 1999 | 195.0432 |
| 2000 | 241.1737 |
| 2001 | 274.4534 |
| 2002 | 307.8142 |
| 2003 | 345.4279 |
| 2004 | 379.8123 |
| 2005 | 407.3897 |
| 2006 | 432.4928 |
| 2007 | 455.0869 |
| 2008 | 472.4476 |
| 2009 | 487.5208 |
| 2010 | 496.5347 |
| 2011 | 510.7971 |
| 2012 | 526.6451 |
| 2013 | 533.2905 |
| 2014 | 541.1190 |
| 2015 | 547.4904 |
| 2016 | 552.6583 |
| 2017 | 559.8829 |
| 2018 | 561.8414 |
| 2019 | 565.8272 |
| 2020 | 570.7485 |
| 2021 | 575.2194 |
| 2022 | 578.9234 |
| 2023 | 583.3769 |
| 2024 | 585.1772 |
| 2025 | 585.9909 |
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.