com.github.chen0040.clustering.em

Class EMClustering

java.lang.Object

com.github.chen0040.clustering.em.EMClustering

public class EMClustering
extends Object

Created by xschen on 18/8/15. Expectation Maximization Clustering, Note that this is a soft clustering method

Field Summary

Fields

Modifier and Type	Field and Description
protected int	clusterCount
protected double[][]	clusters
protected double[][]	expectactionMatrix
protected double	sigma0

Constructor Summary

Constructors

Constructor and Description
EMClustering()

Method Summary

Modifier and Type	Method and Description
double	calcExpectation(com.github.chen0040.data.frame.DataRow tuple, int clusterIndex)
com.github.chen0040.data.frame.DataFrame	fitAndTransform(com.github.chen0040.data.frame.DataFrame batch)
double	getDistance(double[] x1, double[] x2)

Methods inherited from class java.lang.Object

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

Field Detail

sigma0

protected double sigma0

clusterCount

protected int clusterCount

expectactionMatrix

protected double[][] expectactionMatrix

clusters

protected double[][] clusters

Constructor Detail

EMClustering

public EMClustering()

Method Detail

getDistance

public double getDistance(double[] x1,
                          double[] x2)

calcExpectation

public double calcExpectation(com.github.chen0040.data.frame.DataRow tuple,
                              int clusterIndex)

fitAndTransform

public com.github.chen0040.data.frame.DataFrame fitAndTransform(com.github.chen0040.data.frame.DataFrame batch)