oracle.spatial.hadoop.vector.cluster.kmeans

Class InitialKPointsGenerator

java.lang.Object

oracle.spatial.hadoop.vector.cluster.kmeans.InitialKPointsGenerator

public class InitialKPointsGenerator
extends java.lang.Object

Generates the initial k centers used as the input for the KMeans algorithm based on a sample of points from the input data set.

Author:

hsaucedo

Constructor Summary

Constructors

Constructor and Description
InitialKPointsGenerator(PointWritable[] points) Creates a new instance

Method Summary

Modifier and Type	Method and Description
double[]	getInitialKPoints(int k) Gets k points from the initial array of points

Methods inherited from class java.lang.Object

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

Constructor Detail

InitialKPointsGenerator

public InitialKPointsGenerator(PointWritable[] points)

Creates a new instance

Parameters:

points - an array of sampled points from the input data set

Method Detail

getInitialKPoints

public double[] getInitialKPoints(int k)
                           throws java.io.IOException,
                                  java.lang.InterruptedException

Gets k points from the initial array of points

Parameters:

k - the number of points to be returned

Returns:

an array or points ordinates

Throws:

java.io.IOException

java.lang.InterruptedException