Class InvertibleColumnTransform

java.lang.Object

smile.data.transform.ColumnTransform

smile.data.transform.InvertibleColumnTransform

All Implemented Interfaces:

Serializable, Function<Tuple,Tuple>, InvertibleTransform, Transform

public class InvertibleColumnTransform
extends ColumnTransform
implements InvertibleTransform

Invertible column-wise transformation.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
InvertibleColumnTransform(String name, Map<String,Function> transforms, Map<String,Function> inverses)	Constructor.

Method Summary

Modifier and Type	Method	Description
DataFrame	invert(DataFrame data)	Inverse transform a data frame.
Tuple	invert(Tuple x)	Inverse transform a tuple.

Methods inherited from class ColumnTransform

apply, apply, toString

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface Function

andThen, apply, compose

Methods inherited from interface Transform

andThen, apply, compose

Constructor Details

InvertibleColumnTransform

public InvertibleColumnTransform(String name,
 Map<String,Function> transforms,
 Map<String,Function> inverses)

Constructor.

Parameters:

name - the name of transformation.

transforms - the map of column name to transform lambda.

inverses - the map of column name to inverse transform lambda.

Method Details

invert

public Tuple invert(Tuple x)

Description copied from interface: InvertibleTransform

Inverse transform a tuple.

Specified by:

invert in interface InvertibleTransform

Parameters:

x - a tuple.

Returns:

the inverse transformed tuple.

invert

public DataFrame invert(DataFrame data)

Description copied from interface: InvertibleTransform

Inverse transform a data frame.

Specified by:

invert in interface InvertibleTransform

Parameters:

data - a data frame.

Returns:

the inverse transformed data frame.