On September 14, 2021, Mengzi Tang successfully defended her Ph.D. thesis "Machine learning methods for ordinal classification with absolute and relative information" and was awarded the title of Doctor of Bioscience Engineering: Mathematical Modelling. Mengzi was supervised by Bernard De Baets and Raúl Pérez-Fernández of the University of Oviedo, Spain. Her jury included the international expert ‪Pedro Antonio Gutiérrez, professor at the University of Córdoba. The research of Mengzi was supported by the China Scholarship Council.