org.apache.mahout.clustering.canopy

Class CanopyClusterer

java.lang.Object

org.apache.mahout.clustering.canopy.CanopyClusterer

Deprecated.

@Deprecated
public class CanopyClusterer
extends Object

Constructor Summary

Constructors

Constructor and Description
CanopyClusterer(DistanceMeasure measure, double t1, double t2) Deprecated.

Method Summary

Modifier and Type	Method and Description
void	addPointToCanopies(Vector point, Collection<Canopy> canopies) Deprecated. This is the same algorithm as the reference but inverted to iterate over existing canopies instead of the points.
boolean	canopyCovers(Canopy canopy, Vector point) Deprecated. Return if the point is covered by the canopy
static List<Canopy>	createCanopies(List<Vector> points, DistanceMeasure measure, double t1, double t2) Deprecated. Iterate through the points, adding new canopies.
static List<Vector>	getCenters(Iterable<Canopy> canopies) Deprecated. Iterate through the canopies, adding their centroids to a list
double	getT1() Deprecated.
double	getT2() Deprecated.
double	getT3() Deprecated.
double	getT4() Deprecated.
void	setT3(double t3) Deprecated.
void	setT4(double t4) Deprecated.
static void	updateCentroids(Iterable<Canopy> canopies) Deprecated. Iterate through the canopies, resetting their center to their centroids
void	useT3T4() Deprecated. Used by CanopyReducer to set t1=t3 and t2=t4 configuration values

Methods inherited from class java.lang.Object

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

Constructor Detail

CanopyClusterer

public CanopyClusterer(DistanceMeasure measure,
                       double t1,
                       double t2)

Deprecated.

Method Detail

getT1

public double getT1()

Deprecated.

getT2

public double getT2()

Deprecated.

getT3

public double getT3()

Deprecated.

getT4

public double getT4()

Deprecated.

useT3T4

public void useT3T4()

Deprecated.

Used by CanopyReducer to set t1=t3 and t2=t4 configuration values

addPointToCanopies

public void addPointToCanopies(Vector point,
                               Collection<Canopy> canopies)

Deprecated.

This is the same algorithm as the reference but inverted to iterate over existing canopies instead of the points. Because of this it does not need to actually store the points, instead storing a total points vector and the number of points. From this a centroid can be computed.

This method is used by the CanopyMapper, CanopyReducer and CanopyDriver.

Parameters:

point - the point to be added

canopies - the List to be appended

canopyCovers

public boolean canopyCovers(Canopy canopy,
                            Vector point)

Deprecated.

Return if the point is covered by the canopy

Parameters:

point - a point

Returns:

if the point is covered

createCanopies

public static List<Canopy> createCanopies(List<Vector> points,
                                          DistanceMeasure measure,
                                          double t1,
                                          double t2)

Deprecated.

Iterate through the points, adding new canopies. Return the canopies.

Parameters:

points - a list defining the points to be clustered

measure - a DistanceMeasure to use

t1 - the T1 distance threshold

t2 - the T2 distance threshold

Returns:

the List created

getCenters

public static List<Vector> getCenters(Iterable<Canopy> canopies)

Deprecated.

Iterate through the canopies, adding their centroids to a list

Parameters:

canopies - a List

Returns:

the List

updateCentroids

public static void updateCentroids(Iterable<Canopy> canopies)

Deprecated.

Iterate through the canopies, resetting their center to their centroids

Parameters:

canopies - a List

setT3

public void setT3(double t3)

Deprecated.

setT4

public void setT4(double t4)

Deprecated.