FromKey Class

Converts the key types back to their original values.

Inheritance

nimbusml.internal.core.preprocessing._fromkey.FromKey

FromKey

nimbusml.base_transform.BaseTransform

FromKey

sklearn.base.TransformerMixin

FromKey

Constructor

FromKey(columns=None, **params)

Parameters

columns

see Columns.

params

Additional arguments sent to compute engine.

Examples

   ###############################################################################
   # FromKey
   from nimbusml import FileDataStream, Pipeline
   from nimbusml.datasets import get_dataset
   from nimbusml.preprocessing import FromKey, ToKey

   # data input (as a FileDataStream)
   path = get_dataset('topics').as_filepath()

   # load data
   data = FileDataStream.read_csv(path, sep=',')

   # transform usage
   pipeline = Pipeline([
       ToKey(columns=['review_reverse']),
       FromKey(columns=['review_reverse'])
   ])

   # fit and transform
   output = pipeline.fit_transform(data)
   print(output.head())
   #   label                              review                   review_reverse
   # 0      1  animals birds cats dogs fish horse   radiation galaxy universe duck
   # 1      0    horse birds house fish duck cats  space galaxy universe radiation
   # 2      1         car truck driver bus pickup                       bus pickup
   # 3      0   car truck driver bus pickup horse                        car truck
   # 4      1     car truck  car truck driver bus                     pickup horse

Remarks

The FromKey transform converts a column of keys, generated using ToKey, to their original values.

Methods

get_params

Get the parameters for this operator.

get_params

Get the parameters for this operator.

get_params(deep=False)

Parameters

deep

default value: False