The CWTS Leiden Ranking ۲۰۲۰ includes ۱۱۷۶ universities worldwide. These universities have been selected based on their number of Web of Science indexed publications in the period ۲۰۱۵.۲۰۱۸. The CWTS Leiden Ranking ۲۰۲۰ offers a sophisticated set of bibliometric indicators that provide statistics at the level of universities on scientific impact, collaboration, open access publishing, and gender diversity. The open access status of a publication is determined based on Unpaywall data. The Leiden Ranking is based on publications in the Web of Science database produced by Clarivate Analytics (The Clarivate Analytics bibliographic database Web of Science). The most up-to-date statistics made available in the Leiden Ranking are based on publications in the period ۲۰۱۵.۲۰۱۸، but statistics are also provided for earlier periods.
In this year «s Leiden ranking, ۳۶ universities from Iran were among the top ۱.۱۷۶ universities in the world. TMU is ranked fourth among ۳۶ Iranian universities in terms of scientific authority, scientific diplomacy and open access to publications, and is the fifth Iranian university in terms of gender diversity. TMU» s global ranking in Leiden's latest ranking compared to ۲۰۱۹، has climbed ۲۸ steps in scientific authority, ۱۱ steps in scientific diplomacy and free access to publications, and ۳۰ steps in gender diversity.
The CWTS Leiden Ranking is an annual global university ranking based exclusively on bibliometric indicators. The rankings are compiled by the Centre for Science and Technology Studies at Leiden University in the Netherlands. Compared with other university rankings, the Leiden Ranking offers more advanced bibliometric indicators. The underlying methodology is richly documented. The Leiden Ranking provides information exclusively about the research done at universities.