ai.djl.nn.core

Class Embedding.DefaultItem

java.lang.Object

ai.djl.nn.core.Embedding.DefaultItem

All Implemented Interfaces:

AbstractEmbedding<T>, AbstractIndexedEmbedding<T>

Enclosing class:

Embedding<T>

protected class Embedding.DefaultItem
extends java.lang.Object
implements AbstractIndexedEmbedding<T>

Constructor Summary

Constructors

Constructor and Description
DefaultItem(T defaultItem)

Method Summary

Modifier and Type	Method and Description
T	decode(byte[] byteArray) Decodes the given byte array into an object of input parameter type.
NDArray	embed(NDManager manager, T[] items) Embeds an array of items.
long	embed(T item) Embeds an item.
byte[]	encode(T input) Encodes an object of input type into a byte array.
boolean	hasItem(T item) Returns whether an item is in the embedding.
java.util.Optional<T>	unembed(long index) Returns the item corresponding to the given index.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultItem

public DefaultItem(T defaultItem)

Method Detail

encode

public byte[] encode(T input)
              throws java.io.IOException

Encodes an object of input type into a byte array. This is used in saving and loading the Embedding objects.

Specified by:

encode in interface AbstractIndexedEmbedding<T>

Parameters:

input - the input object to be encoded

Returns:

the encoded byte array.

Throws:

java.io.IOException - if there is an error while encoding

decode

public T decode(byte[] byteArray)
         throws java.io.IOException

Decodes the given byte array into an object of input parameter type.

Specified by:

decode in interface AbstractIndexedEmbedding<T>

Parameters:

byteArray - the byte array to be decoded

Returns:

the decode object of input parameter type

Throws:

java.io.IOException - if there was an error while decoding

hasItem

public boolean hasItem(T item)

Returns whether an item is in the embedding.

Specified by:

hasItem in interface AbstractEmbedding<T>

Parameters:

item - the item to test

Returns:

true if the item is in the embedding

embed

public NDArray embed(NDManager manager,
                     T[] items)

Embeds an array of items.

Specified by:

embed in interface AbstractEmbedding<T>

Parameters:

manager - the manager for the new embeddings

items - the items to embed

Returns:

the embedding NDArray of Shape(items.length, embeddingSize)

embed

public long embed(T item)

Embeds an item.

Specified by:

embed in interface AbstractIndexedEmbedding<T>

Parameters:

item - the item to embed

Returns:

the index of the item in the embedding

unembed

public java.util.Optional<T> unembed(long index)

Returns the item corresponding to the given index.

Specified by:

unembed in interface AbstractIndexedEmbedding<T>

Parameters:

index - the index

Returns:

the item corresponding to the given index