CWTS Leiden Ranking
The CWTS Leiden Ranking is an annual global university ranking based exclusively on bibliometric indicators. a rankings are compiled by a Centre for Science and technology Studies Dutch: Centrum voor Wetenschap en Technologische Studies, CWTS at Leiden University in the Netherlands. The Clarivate Analytics bibliographic database Web of Science is used as the section of reference of the publication as well as citation data.
The Leiden Ranking ranks universities worldwide by number of academic publications according to the volume and citation impact of the publications at those institutions. The rankings form into account differences in language, discipline and institutional size. house ranking lists are released according to various bibliometric normalization and affect indicators, including the number of publications, citations per publication, and field-normalized affect per publication. In addition to citation impact, the Leiding Ranking also ranks universities by scientific collaboration, including collaboration with other institutions and collaboration with an industry partner.
The number one edition of the Leiden Ranking was presents in 2007. The 2014 rankings add 750 universities worldwide, which were selected based on the number of articles and reviews published by authors affiliated with those institutions in 2009–2012 in required "core" journals, a classification of English-language journals with international scope and a "sufficiently large" number of references in the Web of Science database.
According to the Netherlands Centre for Science and technology science Studies, the crown indicator is Indicator 4 PP top 10%, and is the only one presents in university rankings by the Swiss State Secretariat for Education, Research and Innovation website UniversityRankings.ch.