Model to Personalize the Teaching-Learning Process in Virtual Environments Using Case-Based Reasoning. - Benjamin Maraza-Quispe; Olga Alejandro-Oviedo; Betsy Cisneros-Chavez; Maryluz Cuentas-Toledo; Luis Cuadros-Paz; Walter Cornelio Fernandez Gambarini; Lita Quispe-Flores; Nicolas Caytuiro-Silva (ICETC, 2019)