::: METHODOLOGY :::

The CWUR Rankings by Subject rank the world’s leading universities in 227 subject categories, based on the number of research articles in top-tier journals. Data is obtained from Clarivate Analytics (previously the Intellectual Property and Science business of Thomson Reuters).

::: TECHNICAL DESCRIPTION :::

For a given Subject Category SC_i in the Journal Citation Reports (JCR) database, journals are sorted according to the product Π of their Eigenfactor and Article Influence Score, from largest to smallest. A list L_i of journals with non-zero Π can then be obtained. If N_i is the total number of articles in L_i listed in the most recent edition of JCR, the journals chosen are the ones with the highest Π in L_i and containing between them 0.25N_i articles in total. Repeating this algorithm, we obtain 227 lists J_i of the top journals for all Subject Categories in JCR.

Using the Science Citation Index Expanded and the Social Sciences Citation Index databases, an institution’s pre-final score in a given Subject Category SC_i is given by log (n_i + 1), where n_i is the institution’s number of “Article” publications in J_i during the last 10 full years. Pre-final scores are then scaled to the top performing institution to arrive at final scores.