Informetric Explanation of Some Leiden Ranking Graphs Universiteit Hasselt Universiteit Antwerpen
The S-shaped functional relation between the mean citation score and the proportion of top 10% publications for the 500 Leiden Ranking universities is explained using results of the shifted Lotka function. Also the concave or convex relation between the proportion of top 100θ% publications, for different fractions θ, is explained using the obtained new informetric model.