Research is one of the key elements in many global rankings. Mostly, the amount of academic publications and the impact of this output is taken into account. Many rankings for example weigh how many highly cited researchers a university has: the academics that belong to the 1% most cited researchers. Read how the research at Erasmus University Rotterdam is being valued in rankings.
Leiden ranking: position #4 in the Netherlands, worldwide position #76
The Leiden Ranking is constituted by the Centre for Science and Technology Studies (CWTS) of Leiden University. This specific research ranking is based on bibliometrical data (publications and citations) from the Web of Science. The ranking focuses on the natural sciences and medical sciences, disciplines in which researchers traditionally publish mostly in international academic journals. It is an interactieve ranking of more than 900 research universities worldwide, in which the user can determine the parameters.
ARWU ranking: position #3 in the Netherlands, worldwide position #80
The Academic Ranking of World Universities (ARWU) was the first global university ranking, which was originally initiated with a national Chinese purpose, but quickly grew out to be an internationally used ranking. This ranking is annually published since 2003 by the Shanghai Jiao Tong University (therefore, it is also called the Shanghai ranking). The position on the general Shanghai ranking is determined by indicators that mostly concern research, for example how many prizes researchers or alumni of the institute have won, or the amount of articles that have been published in certain journals.