baseCode.math
Class MatrixRowStats

java.lang.Object
  baseCode.math.MatrixRowStats

public class MatrixRowStats

extends java.lang.Object

Convenience functions for getting row statistics from matrices.

Copyright (c) 2004

Institution:: Columbia University

Version:

$Id: MatrixRowStats.java,v 1.11 2004/07/27 03:18:58 pavlidis Exp $

Author:

Paul Pavlidis

Method Summary

static cern.colt.list.DoubleArrayList	means(DenseDoubleMatrix2DNamed M) Calculates the means of a matrix's rows.
static cern.colt.list.DoubleArrayList	sampleStandardDeviations(DenseDoubleMatrix2DNamed M) Calculates the sample standard deviation of each row of a matrix
static cern.colt.list.DoubleArrayList	sumOfSquares(DenseDoubleMatrix2DNamed M) Calculates the sum of squares for each row of a matrix
static cern.colt.list.DoubleArrayList	sums(DenseDoubleMatrix2DNamed M) Calculate the sums of a matrix's rows.

Methods inherited from class java.lang.Object

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

Method Detail

sumOfSquares

public static cern.colt.list.DoubleArrayList sumOfSquares(DenseDoubleMatrix2DNamed M)

Calculates the sum of squares for each row of a matrix

Parameters:

M - DenseDoubleMatrix2DNamed

Returns:

DoubleArrayList

means

public static cern.colt.list.DoubleArrayList means(DenseDoubleMatrix2DNamed M)

Calculates the means of a matrix's rows.

Parameters:

M - DenseDoubleMatrix2DNamed

Returns:

DoubleArrayList

sums

public static cern.colt.list.DoubleArrayList sums(DenseDoubleMatrix2DNamed M)

Calculate the sums of a matrix's rows.

Parameters:

M - DenseDoubleMatrix2DNamed

Returns:

DoubleArrayList

sampleStandardDeviations

public static cern.colt.list.DoubleArrayList sampleStandardDeviations(DenseDoubleMatrix2DNamed M)

Calculates the sample standard deviation of each row of a matrix

Parameters:

M - DenseDoubleMatrix2DNamed

Returns:

DoubleArrayList