author @Chaitooler
https://docs.google.com/presentation/d/1YDRz8y8bTRpJFP0uH1c3bH8v1vY4o4-3fFOXQ6x2-iU/edit?usp=sharing
https://topepo.github.io/caret/subsampling-for-class-imbalances.html https://topepo.github.io/caret/subsampling-for-class-imbalances.html#subsampling-during-resampling https://www.r-bloggers.com/handling-class-imbalance-with-r-and-caret-an-introduction/ https://www.researchgate.net/publication/229045207_SMOTE-I_mejora_del_algoritmo_SMOTE_para_balanceo_de_clases_minoritarias