org.openuat.features
Class Correlation

java.lang.Object
  org.openuat.features.Correlation

public class Correlation
extends java.lang.Object

Constructor Summary

Correlation()

Method Summary

double	correlationCoefficient(double[] a, double[] b, int offset) Calculates the correlation coefficient between vectors a and b.
double	correlationCoefficient(int[] a, int[] b, int offset) Calculates the correlation coefficient between vectors a and b.
double	maxCorrelationCoefficient(double[] a, double[] b, int maxOffsetSearch)
int	maxCorrelationCoefficient(int[] a, int[] b, int maxOffsetSearch)

Methods inherited from class java.lang.Object

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

Constructor Detail

Correlation

public Correlation()

Method Detail

correlationCoefficient

public double correlationCoefficient(int[] a,
                                     int[] b,
                                     int offset)

Calculates the correlation coefficient between vectors a and b.

Parameters:

a - The first vector or time series.

b - The second vector or time series.

offset - If >0, then it will be added to the index for accessing b, i.e. elements a[i] and b[i+offset] will be compared. If <0, then it will be added to the index for accessing a, i.e. elements a[i+offset] and b[i] will be compared.

correlationCoefficient

public double correlationCoefficient(double[] a,
                                     double[] b,
                                     int offset)

Calculates the correlation coefficient between vectors a and b.

Parameters:

a - The first vector or time series.

b - The second vector or time series.

offset - If >0, then it will be added to the index for accessing b, i.e. elements a[i] and b[i+offset] will be compared. If <0, then it will be added to the index for accessing a, i.e. elements a[i+offset] and b[i] will be compared.

maxCorrelationCoefficient

public int maxCorrelationCoefficient(int[] a,
                                     int[] b,
                                     int maxOffsetSearch)

maxCorrelationCoefficient

public double maxCorrelationCoefficient(double[] a,
                                        double[] b,
                                        int maxOffsetSearch)