BOW_test                Transform New Text into a Document-Feature
                        Matrix
BOW_train               Train a Bag-of-Words Model
logit_model             Train a Regularized Logistic Regression Model
                        using glmnet
pipeline                Run a Full Text Classification Pipeline on
                        Preprocessed Text
pre_process             Preprocess a Vector of Text Documents
prediction              Predict Sentiment on New Data Using a Saved
                        Pipeline Artifact
rf_model                functions/random_forest_fast.R Train a Random
                        Forest Model using Ranger
xgb_model               Train a Gradient Boosting Model using XGBoost
