w-norm index
Properties
- Metric Type: Core Metric
- Considerations and Adjustments: Coauthorship
- Publication Focus: All Publications
- Citation Focus: All Citations, Core Citations
Description
The w-norm index (Anania and Caruso 2013) is a variant of the w-index (Anania and Caruso), where citation counts are first normalized by dividing by the number of coauthors for each publication:
$$C^{*}_i = \frac{C_i}{A_i}.$$These are used to calculate a normalized version of h (h-norm index), and then w-norm is determined as:$$w{-}norm=h{-}norm+\left(1-\frac{{h{-}norm}^2}{\sum\limits_{i=1}^{P} C^{*}_i}\right).$$
History
| Year | w-norm |
|---|---|
| 1997 | 1.0000 |
| 1998 | 1.8421 |
| 1999 | 2.7563 |
| 2000 | 4.5248 |
| 2001 | 4.7388 |
| 2002 | 6.6602 |
| 2003 | 8.6184 |
| 2004 | 9.6871 |
| 2005 | 12.6153 |
| 2006 | 14.6434 |
| 2007 | 16.6532 |
| 2008 | 19.6117 |
| 2009 | 20.6503 |
| 2010 | 22.6552 |
| 2011 | 23.6915 |
| 2012 | 24.7098 |
| 2013 | 26.7096 |
| 2014 | 26.7404 |
| 2015 | 26.7668 |
| 2016 | 27.7729 |
| 2017 | 27.7905 |
| 2018 | 27.8071 |
| 2019 | 28.8078 |
| 2020 | 29.8082 |
| 2021 | 31.7961 |
| 2022 | 33.7843 |
| 2023 | 33.7968 |
| 2024 | 33.8086 |
| 2025 | 33.8140 |
References
- Anania, G., and A. Caruso (2013) Two simple new bibliometric indexes to better evaluate research in disciplines where publications typically receive less citations. Scientometrics 96:617-631.