water.util

Class FrameUtils.CategoricalBinaryEncoder

java.lang.Object

water.Iced

water.util.FrameUtils.CategoricalBinaryEncoder

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, java.lang.Cloneable, Freezable

Enclosing class:

FrameUtils

public static class FrameUtils.CategoricalBinaryEncoder
extends Iced

Helper to convert a categorical variable into a "binary" encoding format. In this format each categorical value is first assigned an integer value, then that integer is written in binary, and each bit column is converted into a separate column. This is intended as an improvement to an existing one-hot transformation. For each categorical variable we assume that the number of categories is 1 + domain cardinality, the extra category is reserved for NAs. See http://www.willmcginnis.com/2015/11/29/beyond-one-hot-an-exploration-of-categorical-variables/

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CategoricalBinaryEncoder(Frame dataset, java.lang.String[] skipCols)

Method Summary

Modifier and Type	Method and Description
Job<Frame>	exec()

Methods inherited from class water.Iced

asBytes, clone, copyOver, frozenType, read, readExternal, readJSON, reloadFromBytes, toJsonBytes, toJsonString, write, writeExternal, writeJSON

Methods inherited from class java.lang.Object

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

Constructor Detail

CategoricalBinaryEncoder

public CategoricalBinaryEncoder(Frame dataset,
                                java.lang.String[] skipCols)

Method Detail

exec

public Job<Frame> exec()