Tuner class is the class that manages the hyperparameter search process,
including model creation, training, and evaluation. For each trial, a
Tuner receives new
hyperparameter values from an
Oracle instance. After calling
sends the evaluation results back to the
Oracle instance and it retrieves the next set
of hyperparameters to try.
There are a few built-in
Tuner subclasses available for widely-used tuning
You can also subclass the
Tuner class to customize your tuning process.
In particular, you can override the
to customize model building and training.