Synthetic Minority Over-sampling Technique (SMOTE)

Synthetic Minority Over-sampling Technique, DOI: https://doi.org/10.1613/jair.953

SMOTE: Synthetic Minority Over-sampling Technique
This function is based on the paper referenced (DOI) below - with a few additional optional functionalities.
DOI: https://doi.org/10.1613/jair.953

This function synthesizes new observations based on existing (input) data, and a k-nearest neighbor approach. If multiple classes are given as input, only neighbors within the same class are considered.
This function can be used to over-sample minority classes in a dataset to create a more balanced dataset.