Forecasting of Post-Graduate Students' Late Dropout Based on the Optimal Probability Threshold Adjustment Technique for Imbalanced Data. - Carmen Lili Rodríguez Velasco; Eduardo García Villena; Julien Brito Ballester; Frigdiano Álvaro Durántez Prados; Eduardo Silva Alvarado; Jorge Crespo Álvarez (Int. J. Emerg. Technol. Learn., 2023)