CWTS Leiden University Ranking 2014 Maths, Science
The CWTS Leiden Ranking 2014 measures the scientific performance of 750 major universities worldwide. Using a sophisticated set of bibliometric indicators, the ranking aims to provide highly accurate measurements of the scientific impact of universities and of universities’ involvement in scientific collaboration. The CWTS Leiden Ranking 2014 is based on Web of Science indexed publications from the period 2009–2012. The main outcomes of the ranking are summarized in this press release. (A Dutch press release is available here.)
Compared with other university rankings, the Leiden Ranking offers more advanced indicators of scientific impact and collaboration and uses a more transparent methodology. The Leiden Ranking does not rely on highly subjective data obtained from reputational surveys or on data provided by universities themselves. Also, the Leiden Ranking refrains from aggregating different dimensions of university performance into a single overall indicator.
Compared with the previous edition of the CWTS Leiden Ranking, the 2014 edition includes a number of enhancements. First of all, the number of universities included in the ranking has been increased from 500 to 750. In addition, the normalization methodology that corrects for field-specific citation practices has been improved, leading to more accurate citation impact indicators. Another improvement relates to the breakdown of the ranking into a number of broad fields of science. Instead of five fields the ranking now offers seven, and these fields have been defined at the level of individual publications rather than at the journal level.
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