ai.djl.basicdataset

Class Mnist

java.lang.Object

ai.djl.training.dataset.RandomAccessDataset

ai.djl.training.dataset.ArrayDataset

ai.djl.basicdataset.Mnist

All Implemented Interfaces:

ai.djl.repository.dataset.PreparedDataset, ai.djl.repository.dataset.ZooDataset, ai.djl.training.dataset.Dataset, java.util.RandomAccess

public final class Mnist
extends ai.djl.training.dataset.ArrayDataset
implements ai.djl.repository.dataset.ZooDataset

MNIST handwritten digits dataset from http://yann.lecun.com/exdb/mnist.

Each sample is an image (in 3-D NDArray) with shape (28, 28, 1).

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Mnist.Builder A builder for a Mnist.

Nested classes/interfaces inherited from class ai.djl.training.dataset.RandomAccessDataset

ai.djl.training.dataset.RandomAccessDataset.BaseBuilder<T extends ai.djl.training.dataset.RandomAccessDataset.BaseBuilder>

Nested classes/interfaces inherited from interface ai.djl.training.dataset.Dataset

ai.djl.training.dataset.Dataset.Usage

Field Summary

Fields

Modifier and Type	Field and Description
static int	IMAGE_HEIGHT
static int	IMAGE_WIDTH
static int	NUM_CLASSES

Fields inherited from class ai.djl.training.dataset.ArrayDataset

data, labels

Fields inherited from class ai.djl.training.dataset.RandomAccessDataset

batchifier, device, executor, limit, pipeline, prefetchNumber, sampler, targetPipeline

Method Summary

Modifier and Type	Method and Description
static Mnist.Builder	builder() Creates a builder to build a Mnist.
ai.djl.repository.Artifact	getArtifact()
ai.djl.repository.MRL	getMrl()
ai.djl.repository.Repository	getRepository()
ai.djl.training.dataset.Dataset.Usage	getUsage()
boolean	isPrepared()
void	prepareData(ai.djl.training.dataset.Dataset.Usage usage)
void	setPrepared(boolean prepared)
void	useDefaultArtifact()

Methods inherited from class ai.djl.training.dataset.ArrayDataset

availableSize, get

Methods inherited from class ai.djl.training.dataset.RandomAccessDataset

getData, getData, randomSplit, size

Methods inherited from class java.lang.Object

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

Methods inherited from interface ai.djl.repository.dataset.ZooDataset

prepare

Methods inherited from interface ai.djl.training.dataset.Dataset

getData

Methods inherited from interface ai.djl.repository.dataset.PreparedDataset

prepare

Field Detail

IMAGE_WIDTH

public static final int IMAGE_WIDTH

See Also:

Constant Field Values

IMAGE_HEIGHT

public static final int IMAGE_HEIGHT

See Also:

Constant Field Values

NUM_CLASSES

public static final int NUM_CLASSES

See Also:

Constant Field Values

Method Detail

builder

public static Mnist.Builder builder()

Creates a builder to build a Mnist.

Returns:

a new builder

getMrl

public ai.djl.repository.MRL getMrl()

Specified by:

getMrl in interface ai.djl.repository.dataset.ZooDataset

getRepository

public ai.djl.repository.Repository getRepository()

Specified by:

getRepository in interface ai.djl.repository.dataset.ZooDataset

getArtifact

public ai.djl.repository.Artifact getArtifact()

Specified by:

getArtifact in interface ai.djl.repository.dataset.ZooDataset

getUsage

public ai.djl.training.dataset.Dataset.Usage getUsage()

Specified by:

getUsage in interface ai.djl.repository.dataset.ZooDataset

isPrepared

public boolean isPrepared()

Specified by:

isPrepared in interface ai.djl.repository.dataset.ZooDataset

setPrepared

public void setPrepared(boolean prepared)

Specified by:

setPrepared in interface ai.djl.repository.dataset.ZooDataset

useDefaultArtifact

public void useDefaultArtifact()
                        throws java.io.IOException

Specified by:

useDefaultArtifact in interface ai.djl.repository.dataset.ZooDataset

Throws:

java.io.IOException

prepareData

public void prepareData(ai.djl.training.dataset.Dataset.Usage usage)
                 throws java.io.IOException

Specified by:

prepareData in interface ai.djl.repository.dataset.ZooDataset

Throws:

java.io.IOException