Li Cai (Chinese: 蔡力; pinyin: Cài Lì; born c. 1980) is a statistician and quantitative psychologist.
He is also Director of the National Center for Research on Evaluation, Standards, and Student Testing, Managing Partner at Vector Psychometric Group.
The algorithm was recognized as a mathematically rigorous breakthrough in the "curse of dimensionality" and garnered numerous top-tier publications and national awards.
Cai develops flexMIRT, a statistical program for multilevel modeling and multidimensional item response theory.
[8] In addition, he is the coauthor (with David Thissen, his doctoral advisor) of IRTPRO, another program for parametric estimation and test scoring.