The dataset is the basic data transform upon which the others operate. Most other transforms require a parent transform as input, from which to compute their output data. For example, a Subsampling transform takes an input data object and reduces the image resolution or the number of total image planes.
A dataset does not have an input data transform. Instead, it gets its input
from source files on disk in one of the
supported file formats. For instructions on how to
create a dataset from files on disk, see the
Importing a dataset from disk topic.