stream.data.vector

Class Vector

java.lang.Object

stream.data.vector.Vector

All Implemented Interfaces:

Serializable, Measurable

Direct Known Subclasses:

InputVector

public class Vector
extends Object
implements Serializable, Measurable

Author:

Sangkyun Lee

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Vector.Type

Field Summary

Fields

Modifier and Type	Field and Description
(package private) int	length
(package private) int	max_index
(package private) HashMap<Integer,Double>	pairs
(package private) double	scale
private static long	serialVersionUID
(package private) double	snorm
(package private) Vector.Type	type
(package private) double[]	vals

Constructor Summary

Constructors

Constructor and Description
Vector() Creates a sparse vector.
Vector(double[] vals) Creates a dense vector from the given values.
Vector(double[] vals, boolean copy)
Vector(HashMap<Integer,Double> pairs) Creates a sparse vector from a HashMap
Vector(HashMap<Integer,Double> pairs, boolean copy)
Vector(int length) Creates a dense vector of the specified length.
Vector(int[] index, double[] vals) Creates a sparse vector from the given indices and values.
Vector(int[] index, double[] vals, int length) Creates a dense vector filling the values in the given indices of non-zero entries.
Vector(Vector x) A copy constructor

Method Summary

Methods

Modifier and Type	Method and Description
Vector	add(double factor, Vector x)
Vector	add(Vector x)
static Vector	createSparseVector(Data datum)
double	get(int i)
double	getByteSize()
HashMap<Integer,Double>	getPairs()
Vector.Type	getType()
double	innerProduct(Vector x)
boolean	isSparse()
int	length()
double	norm()
Vector	scale(double s)
void	set(int j, double d)
double	snorm()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

type

Vector.Type type

scale

double scale

snorm

double snorm

pairs

HashMap<Integer,Double> pairs

max_index

int max_index

vals

double[] vals

length

int length

Constructor Detail

Vector

public Vector()

Creates a sparse vector.

Vector

public Vector(int length)

Creates a dense vector of the specified length.

Parameters:

length -

Vector

public Vector(int[] index,
      double[] vals)

Creates a sparse vector from the given indices and values.

Parameters:

index -

vals -

Vector

public Vector(double[] vals)

Creates a dense vector from the given values.

Parameters:

vals -

Vector

public Vector(double[] vals,
      boolean copy)

Vector

public Vector(HashMap<Integer,Double> pairs)

Creates a sparse vector from a HashMap

Parameters:

pairs -

copy -

Vector

public Vector(HashMap<Integer,Double> pairs,
      boolean copy)

Vector

public Vector(Vector x)

A copy constructor

Vector

public Vector(int[] index,
      double[] vals,
      int length)

Creates a dense vector filling the values in the given indices of non-zero entries.

Parameters:

index -

vals -

dimension - ;

Method Detail

getType

public Vector.Type getType()

isSparse

public boolean isSparse()

getPairs

public HashMap<Integer,Double> getPairs()

length

public int length()

set

public void set(int j,
       double d)

get

public double get(int i)

scale

public Vector scale(double s)

add

public Vector add(Vector x)

add

public Vector add(double factor,
         Vector x)

norm

public double norm()

snorm

public double snorm()

innerProduct

public double innerProduct(Vector x)

toString

public String toString()

Overrides:

toString in class Object

getByteSize

public double getByteSize()

Specified by:

getByteSize in interface Measurable

createSparseVector

public static Vector createSparseVector(Data datum)