org.deeplearning4j.datasets.iterator

Class BaseDatasetIterator

java.lang.Object

org.deeplearning4j.datasets.iterator.BaseDatasetIterator

All Implemented Interfaces:

java.io.Serializable, java.util.Iterator<org.nd4j.linalg.dataset.DataSet>, org.nd4j.linalg.dataset.api.iterator.DataSetIterator

Direct Known Subclasses:

CurvesDataSetIterator, IrisDataSetIterator, MnistDataSetIterator, MovingWindowBaseDataSetIterator, RawMnistDataSetIterator

public class BaseDatasetIterator
extends java.lang.Object
implements org.nd4j.linalg.dataset.api.iterator.DataSetIterator

Baseline implementation includes control over the data fetcher and some basic getters for metadata

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	batch
protected BaseDataFetcher	fetcher
protected int	numExamples
protected org.nd4j.linalg.dataset.api.DataSetPreProcessor	preProcessor

Constructor Summary

Constructors

Constructor and Description
BaseDatasetIterator(int batch, int numExamples, BaseDataFetcher fetcher)

Method Summary

Modifier and Type	Method and Description
boolean	asyncSupported()
int	batch()
int	cursor()
java.util.List<java.lang.String>	getLabels()
boolean	hasNext()
int	inputColumns()
org.nd4j.linalg.dataset.DataSet	next()
org.nd4j.linalg.dataset.DataSet	next(int num)
int	numExamples()
void	remove()
void	reset()
boolean	resetSupported()
void	setPreProcessor(org.nd4j.linalg.dataset.api.DataSetPreProcessor preProcessor)
int	totalExamples()
int	totalOutcomes()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

getPreProcessor

Methods inherited from interface java.util.Iterator

forEachRemaining

Field Detail

batch

protected int batch

numExamples

protected int numExamples

fetcher

protected BaseDataFetcher fetcher

preProcessor

protected org.nd4j.linalg.dataset.api.DataSetPreProcessor preProcessor

Constructor Detail

BaseDatasetIterator

public BaseDatasetIterator(int batch,
                           int numExamples,
                           BaseDataFetcher fetcher)

Method Detail

hasNext

public boolean hasNext()

Specified by:

hasNext in interface java.util.Iterator<org.nd4j.linalg.dataset.DataSet>

next

public org.nd4j.linalg.dataset.DataSet next()

Specified by:

next in interface java.util.Iterator<org.nd4j.linalg.dataset.DataSet>

next

public org.nd4j.linalg.dataset.DataSet next(int num)

Specified by:

next in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

remove

public void remove()

Specified by:

remove in interface java.util.Iterator<org.nd4j.linalg.dataset.DataSet>

totalExamples

public int totalExamples()

Specified by:

totalExamples in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

inputColumns

public int inputColumns()

Specified by:

inputColumns in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

totalOutcomes

public int totalOutcomes()

Specified by:

totalOutcomes in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

resetSupported

public boolean resetSupported()

Specified by:

resetSupported in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

asyncSupported

public boolean asyncSupported()

Specified by:

asyncSupported in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

reset

public void reset()

Specified by:

reset in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

batch

public int batch()

Specified by:

batch in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

cursor

public int cursor()

Specified by:

cursor in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

numExamples

public int numExamples()

Specified by:

numExamples in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

setPreProcessor

public void setPreProcessor(org.nd4j.linalg.dataset.api.DataSetPreProcessor preProcessor)

Specified by:

setPreProcessor in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator

getLabels

public java.util.List<java.lang.String> getLabels()

Specified by:

getLabels in interface org.nd4j.linalg.dataset.api.iterator.DataSetIterator