org.apache.mahout.math

Class WeightedVector

java.lang.Object

org.apache.mahout.math.DelegatingVector

org.apache.mahout.math.WeightedVector

All Implemented Interfaces:

Cloneable, Vector

Direct Known Subclasses:

Centroid

public class WeightedVector
extends DelegatingVector

Decorates a vector with a floating point weight and an index.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.mahout.math.Vector

Vector.Element

Field Summary

Fields inherited from class org.apache.mahout.math.DelegatingVector

delegate

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	WeightedVector(double weight, int index)
	WeightedVector(Vector v, double weight, int index)
	WeightedVector(Vector v, Vector projection, int index)

Method Summary

Methods

Modifier and Type	Method and Description
WeightedVector	clone() Return a copy of the recipient
int	getIndex()
double	getWeight()
Vector	like() Return an empty vector of the same underlying class as the receiver
static WeightedVector	project(Vector v, Vector projection)
static WeightedVector	project(Vector v, Vector projection, int index)
void	setIndex(int index)
void	setWeight(double newWeight)
String	toString()

Methods inherited from class org.apache.mahout.math.DelegatingVector

aggregate, aggregate, all, asFormatString, assign, assign, assign, assign, assign, assign, cross, divide, dot, equals, get, getDistanceSquared, getElement, getIteratorAdvanceCost, getLengthSquared, getLookupCost, getNumNondefaultElements, getNumNonZeroElements, getQuick, getVector, hashCode, incrementQuick, invalidateCachedLength, isAddConstantTime, isDense, isSequentialAccess, logNormalize, logNormalize, maxValue, maxValueIndex, mergeUpdates, minus, minValue, minValueIndex, nonZeroes, norm, normalize, normalize, plus, plus, set, setQuick, size, times, times, viewPart, zSum

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

WeightedVector

protected WeightedVector(double weight,
              int index)

WeightedVector

public WeightedVector(Vector v,
              double weight,
              int index)

WeightedVector

public WeightedVector(Vector v,
              Vector projection,
              int index)

Method Detail

project

public static WeightedVector project(Vector v,
                     Vector projection)

project

public static WeightedVector project(Vector v,
                     Vector projection,
                     int index)

getWeight

public double getWeight()

getIndex

public int getIndex()

setWeight

public void setWeight(double newWeight)

setIndex

public void setIndex(int index)

like

public Vector like()

Description copied from interface: Vector

Return an empty vector of the same underlying class as the receiver

Specified by:

like in interface Vector

Overrides:

like in class DelegatingVector

Returns:

a Vector

toString

public String toString()

Overrides:

toString in class DelegatingVector

clone

public WeightedVector clone()

Description copied from interface: Vector

Return a copy of the recipient

Specified by:

clone in interface Vector

Overrides:

clone in class DelegatingVector

Returns:

a new Vector