javax.visrec.ml.data

Class BasicDataSet<E>

java.lang.Object

javax.visrec.ml.data.BasicDataSet<E>

All Implemented Interfaces:

Iterable<E>, DataSet<E>

public class BasicDataSet<E>
extends Object
implements DataSet<E>

Basic implementation of DataSet interface

Author:

Zoran Sevarac

Nested Class Summary

Nested classes/interfaces inherited from interface javax.visrec.ml.data.DataSet

DataSet.Column, DataSet.ColumnType

Constructor Summary

Constructors

Constructor and Description
BasicDataSet(DataSet.Column[] cols) Creates an instance of BasicDataSet
BasicDataSet(List<E> elements) Creates an instance of BasicDataSet

Method Summary

Modifier and Type	Method and Description
DataSet<E>	add(E item) Adds an element to this data set.
DataSet<E>	addAll(DataSet<E> items) Add an existing DataSet to the current DataSet
void	clear() Clear items of the DataSet
E	get(int index) Get an item from the DataSet
List<E>	getItems() Get a collection of the items in the DataSet
String[]	getTargetLabels()
boolean	isEmpty() Determines whether the DataSet is empty or not.
Iterator<E>	iterator()
int	size() Get the number of elements in DataSet
DataSet<E>[]	split(double... parts) Split data set into parts of specified sizes
DataSet<E>[]	split(int parts) Split dataset into specified number of equally sized parts.
DataSet<E>[]	split(int parts, Random rnd) Split dataset into specified number of equally sized parts, using specified random generator.
DataSet[]	split(Random rnd, double... parts) Split data set into parts of specified sizes using specified random generator

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.visrec.ml.data.DataSet

shuffle, shuffle, split

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

BasicDataSet

public BasicDataSet(DataSet.Column[] cols)

Creates an instance of BasicDataSet

Parameters:

cols - columns of the data set.

BasicDataSet

public BasicDataSet(List<E> elements)

Creates an instance of BasicDataSet

Parameters:

elements - items of the data set.

Method Detail

add

public DataSet<E> add(E item)

Description copied from interface: DataSet

Adds an element to this data set.

Specified by:

add in interface DataSet<E>

Parameters:

item - data set item to add to the data set

Returns:

current instance of DataSet

addAll

public DataSet<E> addAll(DataSet<E> items)

Description copied from interface: DataSet

Add an existing DataSet to the current DataSet

Specified by:

addAll in interface DataSet<E>

Parameters:

items - existing DataSet

Returns:

current instance of DataSet

get

public E get(int index)

Description copied from interface: DataSet

Get an item from the DataSet

Specified by:

get in interface DataSet<E>

Parameters:

index - index as int which corresponds with the index of the DataSet

Returns:

item from the DataSet

clear

public void clear()

Description copied from interface: DataSet

Clear items of the DataSet

Specified by:

clear in interface DataSet<E>

isEmpty

public boolean isEmpty()

Description copied from interface: DataSet

Determines whether the DataSet is empty or not.

Specified by:

isEmpty in interface DataSet<E>

Returns:

true if the DataSet is empty, otherwise false

size

public int size()

Description copied from interface: DataSet

Get the number of elements in DataSet

Specified by:

size in interface DataSet<E>

Returns:

size in int

split

public DataSet<E>[] split(int parts)

Description copied from interface: DataSet

Split dataset into specified number of equally sized parts.

Specified by:

split in interface DataSet<E>

Parameters:

parts - number of parts to be returned

Returns:

multiple DataSet in an array.

split

public DataSet<E>[] split(int parts,
                          Random rnd)

Description copied from interface: DataSet

Split dataset into specified number of equally sized parts, using specified random generator.

Specified by:

split in interface DataSet<E>

Parameters:

parts - number of parts/subsets to return

rnd - random number generator

Returns:

multiple DataSet in an array.

split

public DataSet<E>[] split(double... parts)

Description copied from interface: DataSet

Split data set into parts of specified sizes

Specified by:

split in interface DataSet<E>

Parameters:

parts - specific sizes of DataSet

Returns:

array of DataSet

split

public DataSet[] split(Random rnd,
                       double... parts)

Description copied from interface: DataSet

Split data set into parts of specified sizes using specified random generator

Specified by:

split in interface DataSet<E>

Parameters:

rnd - random generator

parts - specific sizes of DataSet

Returns:

array of DataSet

getTargetLabels

public String[] getTargetLabels()

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Iterable<E>

getItems

public List<E> getItems()

Description copied from interface: DataSet

Get a collection of the items in the DataSet

Specified by:

getItems in interface DataSet<E>

Returns:

Collection