Leiden Ranking
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| Leiden Ranking | |
|---|---|
| Name | Leiden Ranking |
| Established | 2008 |
| Discipline | Bibliometrics |
| Publisher | Centre for Science and Technology Studies, Leiden University |
| Country | Netherlands |
Leiden Ranking The Leiden Ranking is an annual university ranking produced by the Centre for Science and Technology Studies at Leiden University. It compares research performance of universities using bibliometric indicators derived from scientific publications indexed in major citation databases, aiming to provide transparent, reproducible measures for stakeholders such as universities, policymakers, and funders. The ranking emphasizes citation impact and collaboration patterns rather than reputational surveys used by some other ranking systems.
Overview
The Leiden Ranking was launched by scholars affiliated with Leiden University, drawing on methods from bibliometrics developed at institutions including Centre for Science and Technology Studies, CWTS, Royal Netherlands Academy of Arts and Sciences, University of Amsterdam, and referencing large bibliographic resources like Web of Science and Scopus. Its producers have worked alongside researchers at Max Planck Society, European Commission, Organisation for Economic Co-operation and Development, United Nations Educational, Scientific and Cultural Organization, and national agencies to align indicators with policy needs. The project situates itself among other comparative efforts such as Times Higher Education World University Rankings, QS World University Rankings, Academic Ranking of World Universities, and bibliometric endeavors at University of Leiden and teams at Karolinska Institute.
Methodology
Methodological foundations draw on citation indexing methods developed by scholars connected to Institute for Scientific Information, Eugene Garfield, and analytic techniques used at Centre for Science and Technology Studies and CWTS Leiden. Data acquisition relies on bibliographic databases including Web of Science and Scopus, while author name disambiguation and institutional mapping borrow practices from projects at Max Planck Society and Google Scholar. Field-normalization procedures reference classification schemes similar to those discussed at meetings of the European Science Foundation and in reports by OECD and Eurostat. The ranking uses both inclusive and exclusive counting variants—full counting and fractional counting—procedures that echo methodological debates at Royal Society workshops and publications from National Science Foundation analysts.
Indicators and Metrics
Primary indicators include citation impact measures such as mean citation score and field-normalized citation impact, inspired by metrics discussed in literature from Eugene Garfield and Institute for Scientific Information. Additional indicators address collaboration: international collaboration rates and proportion of top-cited publications, paralleling measures used by European Commission research assessments and analyses by Max Planck Society. The ranking offers metrics for size-dependent and size-independent performance, and provides options that reflect publication output, collaboration with institutions like Harvard University, University of Cambridge, Stanford University, and citation concentration similar to analyses conducted by Wellcome Trust and Gates Foundation funded studies. The methodology permits comparison across institutions such as University of Oxford, University of California, Berkeley, Massachusetts Institute of Technology, and Yale University by adjusting for field differences using schemes akin to those used at Karolinska Institute.
Rankings and Editions
Editions are released annually, with historical releases prompting discussion in outlets and forums linked to Nature (journal), Science (journal), The Lancet, and policy reports from European University Association. Past editions have highlighted shifts among institutions including University of Tokyo, Peking University, Tsinghua University, National University of Singapore, and ETH Zurich. Special thematic editions or data updates have been informed by collaborations with organizations such as Leiden University Medical Center, University College London, and national research councils like Research Councils UK and Deutsche Forschungsgemeinschaft.
Reception and Criticism
Scholarly response engages participants from Royal Netherlands Academy of Arts and Sciences, International Council for Science, and bibliometricians at Delft University of Technology and Utrecht University. Praise often cites transparency and reproducibility compared with proprietary methods used by Times Higher Education and QS. Critiques come from commentators at Science (journal), policy analysts at OECD, and university leaders concerned about gaming and misinterpretation, echoing debates from reports by National Institutes of Health and European Commission panels. Critics reference limitations in coverage for fields favored by institutions such as Conservatoire de Paris or specialty hospitals like Karolinska University Hospital, and point to issues similar to those raised around Impact Factor and citation window choices.
Impact and Uses
Universities use the ranking in strategic planning at institutions such as University of Copenhagen, Australian National University, McGill University, and University of São Paulo; national ministries and funding bodies including Ministry of Education (Netherlands), Department for Education (UK), and Australian Research Council consult its metrics. The Leiden Ranking has informed benchmarking exercises at research organizations like Max Planck Society and collaborative consortia such as Coalition for Advancing Research Assessment. Its indicators have been cited in studies by World Bank, UNESCO, and think tanks including RAND Corporation.
Related Projects and Developments
Related initiatives include bibliometric databases and tools developed at Centre for Science and Technology Studies, collaborations with Clarivate Analytics, and complementary rankings such as those produced by CWTS Leiden, SCImago Institutions Rankings, and analytical platforms used by Elsevier. Ongoing developments engage communities from European Research Council, G7 Science Ministers' meetings, and working groups convened by UNESCO to refine responsible metrics and research assessment practices.