Dataframe with truths (column `target_lab`) and estimates (column `y_hat`)
of samples from original dataset.
target_lab
Name of the column in data that contains target/label information.
task
Character string indicating the type of problem,
either 'classification' (categorical outcome) or 'regression' (continuous outcome).
metrics
A set of metric functions to evaluate decision tree,
defaults to common metrics for classification/regression problems.
Can be defined with `yardstick::metric_set`.