The Academic Ranking of World Universities (ARWU), commonly known as the Shanghai ranking, is a publication that was founded and compiled by the Shanghai Jiaotong University. The ranking compared 1200 higher education institutions worldwide according to a formula that took into account alumni winning Nobel Prizes and Fields Medals (10 percent), staff winning Nobel Prizes and Fields Medals (20 percent), highly-cited researchers in 21 broad subject categories (20 percent), articles published in the journalsNature and Science (20 percent), the Science Citation Index and Social Sciences Citation Index (20 percent) and the per capita academic performance (on the indicators above) of an institution (10 percent). The methodology is set out in an academic article by its originators, N.C. Liu and Y. Cheng.