Implement this method to return one or more sets of training data and test data (an Iterable of query and actual value pairs) from a data source.
Implement this method to return one set of test data ( an Iterable of query and actual value pairs) from a data source.
Implement this method to return one set of test data ( an Iterable of query and actual value pairs) from a data source. Should also implement readTraining to return correponding training data.
Implement this method to only return training data from a data source.
Base class of a local data source.
A local data source runs locally within a single machine and return data that can fit within a single machine.