Construct a tfestimators input function from a dataset
input_fn.tf_dataset(dataset, features, response = NULL)An input_fn suitable for use with tfestimators train, evaluate, and predict methods
A dataset
The names of feature variables to be used.
The name of the response variable.
Creating an input_fn from a dataset requires that the dataset
consist of a set of named output tensors (e.g. like the dataset
produced by the tfrecord_dataset() or text_line_dataset() function).