Note that the first row in the training data set is a header row specifying the column names. The response column (i.e. the "y" column) we want to make predictions for is Label. It's a binary column, so we want to build a classification model. The response column is categorical, and contains two levels, 'cat' and 'dog'. Note that the ratio of dogs to cats is 3:1. The remaining columns are all inpu