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Academic Ranking of World Universities Methodologies and Problems

Academic Ranking of World Universities Methodologies and Problems. May 15, 2007. By Professor Nian Cai Liu Institute of Higher Education and Center for World-Class Universities Shanghai Jiao Tong University, China

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Academic Ranking of World Universities Methodologies and Problems

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  1. Academic Ranking of World Universities Methodologies and Problems May 15, 2007 By Professor Nian Cai Liu Institute of Higher Education and Center for World-Class Universities Shanghai Jiao Tong University, China Colloque de l’Académie des sciences "Évolution des publications scientifiques - Le regard des chercheurs" des 14-15 mai 2007

  2. Outline • Purposes • Methodologies & Results • Problems & Discussion • Ranking by Subject Fields • Final Remarks

  3. Purposes

  4. Dream of Chinese for WCU • World-class university (WCU) is a dream for generations of Chinese. It’s not only for pride, but also for the future of China. • Recently, Chinese government has launched several initiatives for research universities. The best-known one is specially designed to build WCU (985 Project).

  5. Goals of Top Chinese Universities • Many top Chinese universities have setup their strategic goals as WCU. • Most of them have also set time tables for reaching the goal of WCU. For example: 2016 for Peking University 2020 for Tsinghua University

  6. Questions About WCU • Is there a clear definition for WCU? • How many WCU should there be in the world? • What are the positions of top Chinese universities in the world? • How can Chinese universities improve themselves to reach the goal of WCU?

  7. Academic Ranking of World Universities • Our original purpose of doing the Academic Ranking of World Universities (ARWU) was to find out the position of Chinese universities in the world and the gap between them and WCU. • ARWU was put on the internet upon the encouragement of colleagues from all over the world. There have been an average of 2000 visitors every day since 2003.

  8. Features of ARWU • ARWU uses a few carefully selected, objective criteria and internationally comparable data that everyone could verify in some way. • It has been carried out by a ranking team of four persons in the Institute of Higher Education of Shanghai Jiao Tong University for their academic interests. • It has been done independently without any financial support from any sources outside the Institute of Higher Education.

  9. Methodologies & Results

  10. Selection of Universities • Any university that has any Nobel Laureates, Fields Medals, Highly Cited Researchers, or papers published in Nature or Science. • Major universities of every country with significant amount of papers indexed by Thomson. • Number of universities scanned: >2000 • Number of universities actually ranked: >1000 • Number of ranked universities on our web: 500

  11. Ranking Criteria and Weights

  12. Definition of Indicator: Alumni • The total number of the alumni of an institution winning Nobel Prizes and Fields Medals. • Alumni are defined as those who obtain bachelor, Master’s or doctoral degrees from the institution. • Different weights are set according to the periods of obtaining degrees. The weight is 100% for alumni of 1991-2000, 90% for alumni of 1981-1990, 80% for alumni of 1971-1980, and so on. • If a person obtains more than one degrees from an institution, the institution is considered once only.

  13. Definition of Indicator: Award • The total number of the staff of an institution winning Nobel prizes in physics, chemistry, medicine and economics and Fields Medal in Mathematics. • Staff is defined as those who work at an institution at the time of winning the prize. • Different weights are set according to the periods of winning the prizes. The weight is 100% for winners since 2001, 90% for winners in 1991-2000, 80% for winners in 1981-1990, 70% for winners in 1971-1980, and so on. • If a winner is affiliated with more than one institution, each institution is assigned the reciprocal of the number of institutions. • For Nobel prizes, if a prize is shared by more than one person, weights are set for winners according to their proportion of prize.

  14. Definition of Indicator: HiCi • The number of highly cited researchers in 21 broad subject categories in life sciences, medicine, physical sciences, engineering and social sciences. • The definition of categories and detailed procedures can be found at the website of Institute of Scientific Information. • The total number of HiCi is about 5000, about 4000 of which is university staff.

  15. Definition of Indicator: N&S • The annual average number of articles published in Nature and Science in the past five years. • To distinguish the order of author affiliation, a weight of 100% is assigned for corresponding author, 50% for first author (second author if the first author is the same as corresponding author), 25% for the next author, and 10% for other authors. • Only publications of article type are considered.

  16. Definition of Indicator: SCI • Total number of articles indexed in Science Citation Index-expanded (SCIE) and Social Science Citation Index (SSCI) in the past year. • A weight of 2 is assigned to articles indexed in SSCI to compensate the bias against humanities and social sciences. • Only publications of article type are considered.

  17. Definition of Indicator: Size • The sub-total scores of the above five indicatorsdivided by the number of full-time equivalent academic staff. • If the number of academic staff for institutions of a country cannot be obtained, the total scores of the above five indicators is used. • For ranking 2005, the number of full-time equivalent academic staff is obtained for institutions in USA, China, Australia, Italy, Netherlands, Sweden, and Belgium etc.

  18. Main Sources of Data • Nobel laureates: http://www.nobel.se • Fields Medals: http://www.mathunion.org/medals/ • Highly-cited researchers: http://www.isihighlycited.com • Articles published in Nature and Science: http://www.isiknowledge.com • Articles indexed in SCIE and SSCI: http://www.isiknowledge.com

  19. Results of ARWU • http://ed.sjtu.edu.cn/ranking.htm • Top 500 universities in the world • Top 100 universities in North and Latin America • Top 100 universities in Asia/Oceania • Top 100 universities in Europe • Statistics of top universities by region and country • Percentage distribution of top universities by country as compared with the share of global population and GDP

  20. Problems & Discussion

  21. Methodological: Education and Service • Education is the basic function of any university, however, it would be impossible to rank the quality of education due to the huge differences among the national systems. • Contribution to the national economic development is becoming increasingly important for universities, however, it is impossible to obtain internationally comparable indicators and data. • The academic or research performance of universities,a good indication of their reputation, can be ranked internationally.

  22. Methodological: Humanities & Social Sciences • Many well-known institutions specialized in humanities and social sciences are ranked relatively low. • Since 2004, the indicator of N&S is not considered for institutions specialized in humanities and social sciences, its weight is relocated to other indicators. • Since 2005, a weight of 2 for articles indexed by SSCI is considered. • Nevertheless, if a university specialized in social sciences and humanities had Nobel Laureates in economics and Highly Cited Researchers in social sciences, it should have good standing.

  23. Methodological: Language Bias • English is the language of international academic community. • Any ranking based on academic performance will be biased towards institutions in English-speaking countries. • One possible solution: papers published in non-native languages are offered a special weight. • Another possible solution: normalization of total articles by the proportion of journal editors of each country.

  24. Methodological: Award and Alumni • Universities which started after 1911 do not have a fair chance. • Disciplines not related to the awarding fields do not have a fair chance. Other important awards include Abel, Pulitzer, Turing, Tyler, Pritzker, etc. • Institutions for winning awards and those for doing the researches may not be the same. • Institutions for obtaining degrees and those for pursuing the studies may not be the same. • Postdoctoral training is not considered.

  25. Methodological: Per Capita Performance • The weight of the Size indicator for per capita performance is rather low. Large institutions have relatively high positions in the ranking. • However, it’s very difficult to obtain internationally comparable data on the number of academic staff. • The types of academic staff: such as purely teaching staff, teaching and research staff, purely research staff. • The ranks of academic staff: such as professor, associate professor, reader, lecturer, research scientist etc.

  26. Technical: Attributions • Many universities have more than one commonly used names: such as Virginia Tech and Virginia Polytechnic and State University. • Variations due to translation: such as Univ Koln and Univ Cologne, Univ Vienna and Univ Wien. • Abbreviated names: such as ETH Zurich for Swiss Federal Institute of Technology Zurich. • Some authors only write their departmental or institute names without mentioning their university names.

  27. Technical: Definition of Institution • University systems: such as Univ California system, Univ London system. • Affiliated institutions and research organizations: such as Ecole Polytechnique Montreal (affiliated to University of Montreal), CNRS Labs (affiliated to French universities). • Teaching and affiliated Hospitals: complex! • Our answer: according to author’s expression.

  28. Other Technical Problems Merging, splitting, inheriting, discontinuing, name-changing of institutions such as: • Univ Kwazulu-Natal in South Africa merged from Univ Natal and Univ Durban-Westville. • University of Innsbruck in Austria splitted into Univ Innsbruck and Innsbruck Medical Univ. • Humboldt Univ Berlin and Free Univ Berlin inheriting the Nobel Prizes of the Berlin University before world war II.

  29. Ranking by Broad Subject Fields (ARWU-FIELD)

  30. Requests for Ranking of World Universities by • In addition, many top Chinese universities want to learn their positions in the world by broad subject fields or disciplines. • Broad subject fields or schools, colleges and • Subject fields or programs, departments

  31. Definition of Broad Subject Fields • Natural Sciences and Mathematics (SCI) • Engineering/Technology and Computer Sciences (ENG) • Life and Agriculture Sciences (LIFE) • Clinical Medicine and Pharmacy (MED) • Social Sciences (SOC) • Arts and humanities are not ranked

  32. ARWU-FIELD Indicators and Weights

  33. Changes in Indicators and Definition • N&S in ARWU is not used in ARWU-FIELD. • TOP is the percentage of articles published in the top 20% journals of each broad subject field. • Fund is the total engineering-related research expenditures. It’s used only for ENG ranking. • Alumni and Award since 1951 are used for all rankings fields except ENG. • PUB is the total number of articles indexed by Thomson in the past year.

  34. Results of ARWU-FIELD • http://ed.sjtu.edu.cn/ranking.htm • Top 100 universities in SCI • Top 100 universities in ENG • Top 100 universities in LIFE • Top 100 universities in MED • Top 100 universities in SOC • Statistics of top universities by region & country • List of top universities by number of top fields

  35. Special Problems in ARWU-FIELD • It’s difficult to obtain data on engineering-related research expenditures and make them comparable. For 2007, Fund was obtained only for US and Canadian universities. • It’s difficult to separate the Nobel Laureates in Physiology or Medicine. They are used in both LIFE and MED ranking.

  36. Final Remarks

  37. Controversy of Ranking • Any ranking is controversial and no ranking is absolutely objective. • University rankings become popular in many countries. Whether we agree or not, ranking systems clearly are here to stay. • The key issue then becomes how to improve ranking systems for the benefits of higher education.

  38. Future Efforts • Study all the above mentioned problems and continuously improve the ranking methodologies. • Establish more comprehensive databases of WCU. • Update ARWU (every August) and ARWU-FIELD annually (every February).

  39. Future Efforts (Cont’ed) • Provide ranking of universities specialized or strong in engineering, medicine, etc. based on the classification of world universities. • Provide ranking of universities with different size, history, budget and function etc. once internationally comparable data are obtained.

  40. Thank you very much for your attention! http://ed.sjtu.edu.cn/ranking.htm http://ed.sjtu.edu.cn/en/

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