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Transformer

InvertTransform

API referenceSource
MultivariateInverse transformUnequal-length series

Invert a series-to-series transformation.

Switches transform and inverse_transform, leaves fit and update the same.

Quickstart

python
from sktime.transformations.compose import InvertTransform

estimator = InvertTransform(transformer)

Tags

Capabilities

  • Multivariate
  • Inverse transform: Supported
  • Unequal-length series
  • Missing values: Not supported
  • Removes missing values: Not supported
  • Equalizes series length: Not supported

Properties

Input typescitype:transform-input
Series
Output typescitype:transform-output
Series
Label typescitype:transform-labels
None
Fit is emptyfit_is_empty
No
Keeps the time indextransform-returns-same-time-index
No
Requires Xrequires_X
Yes
Requires yrequires_y
No
X and y need the same indexX-y-must-have-same-index
No

Parameters(1)

transformersktime transformer, must transform Series input to Series output

this is a “blueprint” transformer, state does not change when fit is called

Examples

>>> from sktime.datasets import load_airline
>>> from sktime.transformations.compose import InvertTransform
>>> from sktime.transformations.exponent import ExponentTransformer
>>> 
>>> inverse_exponent = InvertTransform (ExponentTransformer (power = 3))
>>> X = load_airline ()
>>> Xt = inverse_exponent. fit_transform (X) # computes 3rd square root