weka.experiment

Class PairedStatsCorrected

java.lang.Object

weka.experiment.PairedStats

weka.experiment.PairedStatsCorrected

All Implemented Interfaces:

RevisionHandler

public class PairedStatsCorrected
extends PairedStats

A class for storing stats on a paired comparison. This version is based on the corrected resampled t-test statistic, which uses the ratio of the number of test examples/the number of training examples.

For more information see:

Claude Nadeau and Yoshua Bengio, "Inference for the Generalization Error," Machine Learning, 2001.

Version:

$Revision: 14315 $

Author:

Richard Kirkby (rkirkby@cs.waikato.ac.nz)

Field Summary

Fields inherited from class weka.experiment.PairedStats

correlation, count, differencesProbability, differencesSignificance, differencesStats, sigLevel, xStats, xySum, yStats

Constructor Summary

Constructors

Constructor and Description
PairedStatsCorrected(double sig, double testTrainRatio) Creates a new PairedStatsCorrected object with the supplied significance level and train/test ratio.

Method Summary

Modifier and Type	Method and Description
void	calculateDerived() Calculates the derived statistics (significance etc).
java.lang.String	getRevision() Returns the revision string.
static void	main(java.lang.String[] args) Tests the paired stats object from the command line.

Methods inherited from class weka.experiment.PairedStats

add, add, getDegreesOfFreedom, setDegreesOfFreedom, subtract, subtract, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

PairedStatsCorrected

public PairedStatsCorrected(double sig,
                            double testTrainRatio)

Creates a new PairedStatsCorrected object with the supplied significance level and train/test ratio.

Parameters:

sig - the significance level for comparisons

testTrainRatio - the number test examples/training examples

Method Detail

calculateDerived

public void calculateDerived()

Calculates the derived statistics (significance etc).

Overrides:

calculateDerived in class PairedStats

getRevision

public java.lang.String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Overrides:

getRevision in class PairedStats

Returns:

the revision

main

public static void main(java.lang.String[] args)

Tests the paired stats object from the command line. reads line from stdin, expecting two values per line.

Parameters:

args - ignored.