Towards teaching analytics: a contextual model for analysis of students' evaluation of teaching through text mining and machine learning classification. - Kingsley Okoye; Arturo Arrona-Palacios; Claudia Camacho-Zuñiga; Joaquín Alejandro Guerra Achem; José Escamilla; Samira Hosseini (Educ. Inf. Technol., 2022)