Provide the shape of a data.
Provide the shape of a label.
Set the bucket key, used for bucketing module.
the bucket key related to this batch.
Set the input data.
a list of data.
Set the example indices in this batch.
indices in the same order of data.
Set the labels in the same order of data.
a list of labels.
Set the pad.
The number of examples padded at the end of a batch. It is used when the
total number of examples read is not divisible by the
These extra padded examples are ignored in prediction.