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Hariolf Grupp 3 July 1950 – 20 January 2009

Ranking and classification of universities  based on advanced bibliometric mapping Leiden University 3rd International Symposium on University Rankings February 6-7, 2009 Anthony F.J. van Raan Center for Science and Technology Studies (CWTS) Leiden University.

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Hariolf Grupp 3 July 1950 – 20 January 2009

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  1. Ranking and classification of universities  based on advanced bibliometric mappingLeiden University 3rd International Symposium on University RankingsFebruary 6-7, 2009Anthony F.J. van RaanCenter for Science and Technology Studies (CWTS)Leiden University

  2. Hariolf Grupp 3 July 1950 – 20 January 2009

  3. Contents of this presentation: Indicators and Ranking Classification Benchmarking Some fascinating statistics Latest developments

  4. CWTS has a unique bibliometric data-system: 1000 universities worldwide are defined and ‘unified’ as accurate as possible; For these universities all bibliometric indicators are calculated and updated, for the universities as a whole (average over all fields) and for each of the 16 main fields: Ranking Comparison any of these universities with any selection: Benchmarking There are in the world ~500 largest universities with P > 700/y

  5. Leiden Ranking 2009properties1. Target: Universities, worldwideEurope now on the internet, World will followExtension with non-university institutions2. Activity: Research3. Method: Bibliometric analysis (100%)New approaches necessary to cover engineering, social sciences and humanities more adequatelynon-journal: political science, economy, psychology

  6. 4. Time period2000-2007 (now on the internet) latest version 2003-2007 next month 2004-2008 on the internet5. IndicatorsP, P(0), C, CPP, CPP/FCSm, P*CPP/FCSm, P(t=20, 10, 5, 1%), largest 100, 2506. Differentiation into 16 main fieldsclinical medicine, chemistry,….psychology, humanities7. Benchmarking with universities of choice LERU, US universities,…8. Profiles for each benchmark university

  7. Leiden Ranking 2000-2007, EU Top-100 rank by P, yellow list, first 30

  8. Position 30-50….

  9. Problem of field-specific representation

  10. Problem of language

  11. Is the difference in chosen variable (e.g., impact) between University A with rank 12 and University B with rank 14 significant? Most probably NOT Is therefore the concept of ranking useless? Certainly NOT The ranking is mathematically equivalent to the distribution function which contains crucial statistical information

  12. Leiden Ranking 2000-2007, EU Top-100 rank by CPP, blue list, first 30

  13. Position 30-50….

  14. Field normalizationCPP >> CPP/FCSm is absolutely necessary butCPP: is as it is….. FCSm: do we apply the right field-specific normalization?Problems: size of the field, appropriateness of the WoS-category, role of underlying distribution function (>small non-linearity)?

  15. From basic to applied

  16. Leiden Ranking 2000-2007, EU Top-100 rank by CPP/FCSm, green list, first 30

  17. Position 30-50….

  18. Fatal attraction

  19. Leiden Ranking 2000-2007, EU Top-100 rank by P*{CPP/FCSm}, orange list, first 30

  20. 250 European Universities with P(y) > 350 Top-20 in ‘size’, Physics, ranked by crown indicator’ Ranking by field >>> Field-specific benchmarking universities by field

  21. Current and recent benchmark projects Manchester, Leiden, Heidelberg, Rotterdam, Copenhagen, Zürich, Lisbon UNL, Amsterdam UvA, Amsterdam VU, Southampton Gent, Antwerp, Brussels VUB, UC London, Aarhus Examples:

  22. This classification addresses all important aspects concerning size, international scientific influence (both by field!) and disciplinary width How bibliometric classification works disciplinary spectrum impact size

  23. Large, Broad EuropeanUniversity Focus: top 25 % in publication output and citation impact Top 25% Impact ranking Bottom 25% Bottom 25% Top 25% Publ.ranking

  24. ‘Top’ research university Top 25% University has a top position in each discipline Impact ranking large university smaller university Bottom 25% Publ.ranking Bottom 25% Top 25%

  25. Smaller Specialized EuropeanUniversity Top 25% ECON MATH Specialized in Economy and related fields Among top 25 % in citation impact, but in the lower-50% of publication output Impact ranking PSYCH Bottom 25% Bottom 25% Top 25% Publ.ranking

  26. Latest developments - 1 Of all 16 main fields aresearch forefront mapis constructed: *2003-2007 *Only the top-10%-impact publications *Chemistry & Chemical Engineering *All European universities are positioned on this map in size and in impact http://studies.cwts.nl/projects/leiden-ranking-2009

  27. Latest developments – 2 We add a new research indicator: university-industry collaboration (UI intensity) P(UI)/P for the following fields

  28. Latest developments – 3 Worldwide ranking including all other novelties http://studies.cwts.nl/projects/leiden-ranking-2009

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