com.rapidminer.tools.math.matrix
Class CovarianceMatrix

java.lang.Object
  com.rapidminer.tools.math.matrix.CovarianceMatrix

public class CovarianceMatrix
extends java.lang.Object

This helper class can be used to calculate a covariance matrix from given matrices or example sets.

Author:

Regina Fritsch, Ingo Mierswa

Constructor Summary

CovarianceMatrix()

Method Summary

static Jama.Matrix	getCovarianceMatrix(double[][] data) Returns the covariance matrix from the given double matrix.
static Jama.Matrix	getCovarianceMatrix(ExampleSet exampleSet) Transforms the example set into a double matrix (doubling the amount of used memory) and invokes getCovarianceMatrix(double[][]).

Methods inherited from class java.lang.Object

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

Constructor Detail

CovarianceMatrix

public CovarianceMatrix()

Method Detail

getCovarianceMatrix

public static Jama.Matrix getCovarianceMatrix(ExampleSet exampleSet)

Transforms the example set into a double matrix (doubling the amount of used memory) and invokes getCovarianceMatrix(double[][]).

getCovarianceMatrix

public static Jama.Matrix getCovarianceMatrix(double[][] data)

Returns the covariance matrix from the given double matrix.