org.apache.ignite.ml.dataset.feature.extractor

Class ExtractionUtils.ObjectLabelVectorizer<K,V,C extends Serializable>

java.lang.Object

org.apache.ignite.ml.dataset.feature.extractor.Vectorizer<K,V,C,Object>

org.apache.ignite.ml.dataset.feature.extractor.ExtractionUtils.ObjectLabelVectorizer<K,V,C>

Type Parameters:

K - Key type.

V - Value type

C - Type of coordinate.

All Implemented Interfaces:

Serializable, BiFunction<K,V,LabeledVector>, IgniteBiFunction<K,V,LabeledVector>, Preprocessor<K,V>, FeatureLabelExtractor<K,V,Object>

Direct Known Subclasses:

ExtractionUtils.IntCoordObjectLabelVectorizer

Enclosing class:

ExtractionUtils

public abstract static class ExtractionUtils.ObjectLabelVectorizer<K,V,C extends Serializable>
extends Vectorizer<K,V,C,Object>

Vectorizer with String-label containing on same level as feature values.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.ignite.ml.dataset.feature.extractor.Vectorizer

Vectorizer.LabelCoordinate, Vectorizer.VectorizerAdapter<K,V,C extends Serializable,L>

Constructor Summary

Constructors

Constructor and Description
ObjectLabelVectorizer(C... coords) Creates an instance of Vectorizer.

Method Summary

Modifier and Type	Method and Description
protected Object	label(C coord, K key, V value) Extract label value by given coordinate.
protected Object	zero() Returns default label value for unlabeled data.

Methods inherited from class org.apache.ignite.ml.dataset.feature.extractor.Vectorizer

allCoords, apply, createVector, exclude, extract, feature, labeled, labeled

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ignite.ml.trainers.FeatureLabelExtractor

extractFeatures, extractLabel

Methods inherited from interface org.apache.ignite.ml.preprocessing.Preprocessor

map

Methods inherited from interface org.apache.ignite.ml.math.functions.IgniteBiFunction

andThen

Methods inherited from interface java.util.function.BiFunction

andThen

Constructor Detail

ObjectLabelVectorizer

public ObjectLabelVectorizer(C... coords)

Creates an instance of Vectorizer.

Parameters:

coords - Coordinates.

Method Detail

label

protected Object label(C coord,
                       K key,
                       V value)

Extract label value by given coordinate.

Specified by:

label in class Vectorizer<K,V,C extends Serializable,Object>

Parameters:

coord - Coordinate.

key - Key.

value - Value.

Returns:

label value.

zero

protected Object zero()

Returns default label value for unlabeled data.

Specified by:

zero in class Vectorizer<K,V,C extends Serializable,Object>

Returns:

label value.