Package smile.data

Class SimpleDataset<D,T>

java.lang.Object

smile.data.SimpleDataset<D,T>

Type Parameters:

D - the data type.

T - the target type.

All Implemented Interfaces:

Iterable<SampleInstance<D,T>>, Dataset<D,T>

Direct Known Subclasses:

BinarySparseDataset, BinarySparseSequenceDataset, SparseDataset

public class SimpleDataset<D,T>
extends Object
implements Dataset<D,T>

A simple implementation of Dataset that store data in single machine's memory.

Constructor Summary

Constructors

Constructor	Description
SimpleDataset(Collection<SampleInstance<D,T>> instances)	Constructor

Method Summary

Modifier and Type	Method	Description
SampleInstance<D,T>	get(int i)	Returns the instance at the specified index.
Iterator<SampleInstance<D,T>>	iterator()
int	size()	Returns the number of elements in this collection.
Stream<SampleInstance<D,T>>	stream()	Returns a (possibly parallel) Stream with this collection as its source.
List<SampleInstance<D,T>>	toList()	Returns the List of data items.

Methods inherited from class java.lang.Object

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

Methods inherited from interface smile.data.Dataset

apply, batch, isEmpty, toString

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Details

SimpleDataset

public SimpleDataset(Collection<SampleInstance<D,T>> instances)

Constructor

Parameters:

instances - The sample instances.

Method Details

size

public int size()

Description copied from interface: Dataset

Returns the number of elements in this collection.

Specified by:

size in interface Dataset<D,T>

Returns:

the number of elements in this collection.

get

public SampleInstance<D,T> get(int i)

Description copied from interface: Dataset

Returns the instance at the specified index.

Specified by:

get in interface Dataset<D,T>

Parameters:

i - the index of the instance to be returned.

Returns:

the i-th instance.

stream

public Stream<SampleInstance<D,T>> stream()

Description copied from interface: Dataset

Returns a (possibly parallel) Stream with this collection as its source.

Specified by:

stream in interface Dataset<D,T>

Returns:

a (possibly parallel) Stream with this collection as its source.

iterator

@Nonnull
public Iterator<SampleInstance<D,T>> iterator()

Specified by:

iterator in interface Iterable<D>

toList

public List<SampleInstance<D,T>> toList()

Description copied from interface: Dataset

Returns the List of data items.

Specified by:

toList in interface Dataset<D,T>

Returns:

the List of data items.