moj.similarity.measures
Class PearsonCorrS_row

java.lang.Object
  moj.similarity.SimilarityMeasure
      moj.similarity.measures.PearsonCorrS_row

public class PearsonCorrS_row
extends SimilarityMeasure

PEARSON CORRELATION COEFFICIENT
http://stat.tamu.edu/stat30x/notes/node39.html
similarity [-1, 1]
Usage: for interval & count(?) data.
Sample data:
X 1 2 3
Y 2 5 6
Result:
1.0 0.9607689228305224
0.9607689228305224 1.0
Source: HyperStat Online Contents, Chapter3, Describing Bivariate Data http://davidmlane.com/hyperstat/desc_biv.html

Version:

2004-Oct-01

Author:

Martin Hassel

Constructor Summary

PearsonCorrS_row()

Method Summary

double[][]

analyzeMatrix(float[][] data_matrix)

Methods inherited from class java.lang.Object

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

Constructor Detail

PearsonCorrS_row

public PearsonCorrS_row()

Method Detail

analyzeMatrix

public double[][] analyzeMatrix(float[][] data_matrix)

Specified by:

analyzeMatrix in class SimilarityMeasure

Parameters:

data_matrix - an array of float arrays denoting the rows in the matrix that are to be compared for similarity.

Returns:

an array of double arrays containing the similarities between all rows