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World’s Top 2% Scientists by Citation

25 Oct 2023

(From left) Prof. Wai Ting Eric NGAI, Prof. Michael Harris BOND, Dr Wing Sing Vincent CHO and Dr Chi Hong Simon CHAN

Prof. Wai Ting Eric NGAI, Prof. Michael Harris BOND and Dr Wing Sing Vincent CHO are ranked among the world's top 100,000 scientists by citation (with and without self-citations) or a percentile rank of 2% or above in their disciplines. Prof. Michael Harris Bond and Prof. Eric W.T. Ngai have been listed as the world’s top 2% for four consecutive years. Tracking millions of scientists worldwide, the study has identified about 204,600 scientists across 22 scientific fields and 174 sub-fields, among whom 208 are PolyU academics.
The database contains the career-long data based on the October 1, 2023 snapshot from Scopus, updated to end of citation year 2022.

Rank in PolyU Business School Name  Discipline Total Citations
2 (10)  Prof. Wai Ting Eric NGAI  Information Systems  15,808
3 (12)  Prof. Michael Harris BOND Social Psychology
8 (97)  Dr Wing Sing Vincent CHO Education   1,895

*The ranks are based on a composite score with self-citations excluded. The numbers in the brackets represent the ranks of the staff among the 208 PolyU scientists listed in the study.


Dr Chi Hong Simon CHAN ranks among the world’s top 2% of scientists in his main discipline for single year impact (Ioannidis, 2023). The study has identified about 210,000 top 2% of scientists, among whom 282 are PolyU academics.
Rank in PolyU Name  Discipline Total Citations (2022 Single Year)
138  Dr Chi Hong Simon CHAN   Business & Management  166

Ioannidis, J.P.A. (2023) October 2023 data-update for "Updated science-wide author databases of standardized citation indicators". Elsevier Data Repository, V6. Available at:

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