org.apache.spark.util
Class Vector

Object
  org.apache.spark.util.Vector

All Implemented Interfaces:

java.io.Serializable

public class Vector
extends Object
implements scala.Serializable

See Also:

Serialized Form

Nested Class Summary

static class	Vector.Multiplier
static class	Vector.VectorAccumParam$

Constructor Summary

Vector(double[] elements)

Method Summary

Vector	add(Vector other)
Vector	addInPlace(Vector other)
double	apply(int index)
double	dist(Vector other)
Vector	divide(double d)
double	dot(Vector other)
static Vector.Multiplier	doubleToMultiplier(double num)
double[]	elements()
int	length()
Vector	multiply(double d)
static Vector	ones(int length)
double	plusDot(Vector plus, Vector other) return (this + plus) dot other, but without creating any intermediate storage
static Vector	random(int length, scala.util.Random random) Creates this Vector of given length containing random numbers between 0.0 and 1.0.
double	squaredDist(Vector other)
Vector	subtract(Vector other)
double	sum()
String	toString()
static Vector	zeros(int length)

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Vector

public Vector(double[] elements)

Method Detail

zeros

public static Vector zeros(int length)

ones

public static Vector ones(int length)

random

public static Vector random(int length,
                            scala.util.Random random)

Creates this Vector of given length containing random numbers between 0.0 and 1.0. Optional scala.util.Random number generator can be provided.

Parameters:

length - (undocumented)

random - (undocumented)

Returns:

(undocumented)

doubleToMultiplier

public static Vector.Multiplier doubleToMultiplier(double num)

elements

public double[] elements()

length

public int length()

apply

public double apply(int index)

add

public Vector add(Vector other)

subtract

public Vector subtract(Vector other)

dot

public double dot(Vector other)

plusDot

public double plusDot(Vector plus,
                      Vector other)

return (this + plus) dot other, but without creating any intermediate storage

Parameters:

plus -

other -

Returns:

addInPlace

public Vector addInPlace(Vector other)

multiply

public Vector multiply(double d)

divide

public Vector divide(double d)

sum

public double sum()

squaredDist

public double squaredDist(Vector other)

dist

public double dist(Vector other)

toString

public String toString()

Overrides:

toString in class Object