com.rapidminer.operator.performance
Class RootMeanSquaredError

java.lang.Object
  com.rapidminer.operator.AbstractIOObject
      com.rapidminer.operator.ResultObjectAdapter
          com.rapidminer.tools.math.Averagable
              com.rapidminer.operator.performance.PerformanceCriterion
                  com.rapidminer.operator.performance.MeasuredPerformance
                      com.rapidminer.operator.performance.SimpleCriterion
                          com.rapidminer.operator.performance.RootMeanSquaredError

All Implemented Interfaces:

IOObject, ResultObject, Saveable, Readable, Reportable, LoggingHandler, java.io.Serializable, java.lang.Cloneable, java.lang.Comparable<PerformanceCriterion>

public class RootMeanSquaredError
extends SimpleCriterion

The root-mean-squared error. Mean-squared error is the most commonly used measure of success of numeric prediction, and root mean-squared error is the square root of mean-squared-error, take to give it the same dimensions as the predicted values themselves. This method exaggerates the prediction error - the difference between prediction value and actual value of a test case - of test cases in which the prediction error is larger than the others. If this number is significantly greater than the mean absolute error, it means that there are test cases in which the prediction error is significantly greater than the average prediction error.

Author:

Ingo Mierswa, Simon Fischer Exp $

See Also:

Serialized Form

Constructor Summary

RootMeanSquaredError()

RootMeanSquaredError(RootMeanSquaredError sc)

Method Summary

double	countExample(double label, double predictedLabel) Calculates the error for the current example.
java.lang.String	getDescription() Returns a description of the performance criterion.
java.lang.String	getName() Returns the name of this averagable.
double	transform(double value) Applies a square root to the given value.

Methods inherited from class com.rapidminer.operator.performance.SimpleCriterion

buildSingleAverage, countExample, countExampleWithWeight, getExampleCount, getFitness, getMaxFitness, getMikroAverage, getMikroVariance, startCounting

Methods inherited from class com.rapidminer.operator.performance.MeasuredPerformance

startCounting

Methods inherited from class com.rapidminer.operator.performance.PerformanceCriterion

compareTo

Methods inherited from class com.rapidminer.tools.math.Averagable

buildAverage, clone, cloneAveragable, formatPercent, getAverage, getAverageCount, getExtension, getFileDescription, getMakroAverage, getMakroStandardDeviation, getMakroVariance, getMikroStandardDeviation, getStandardDeviation, getVariance, getVisualizationComponent, setAverageCount, toString

Methods inherited from class com.rapidminer.operator.ResultObjectAdapter

addAction, getActions, getResultIcon, isSavable, log, logError, logNote, logWarning, save, toHTML, toResultString

Methods inherited from class com.rapidminer.operator.AbstractIOObject

copy, getLog, getSource, initWriting, read, setLoggingHandler, setSource, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.rapidminer.operator.IOObject

copy, getLog, getSource, setLoggingHandler, setSource, write

Constructor Detail

RootMeanSquaredError

public RootMeanSquaredError()

RootMeanSquaredError

public RootMeanSquaredError(RootMeanSquaredError sc)

Method Detail

getName

public java.lang.String getName()

Description copied from class: Averagable

Returns the name of this averagable. The returned string should only contain lowercase letters and underscore (RapidMiner parameter format) since the names will be automatically used for GUI purposes.

Specified by:

getName in interface ResultObject

Specified by:

getName in class Averagable

countExample

public double countExample(double label,
                           double predictedLabel)

Calculates the error for the current example.

Specified by:

countExample in class SimpleCriterion

transform

public double transform(double value)

Applies a square root to the given value.

Overrides:

transform in class SimpleCriterion

getDescription

public java.lang.String getDescription()

Description copied from class: PerformanceCriterion

Returns a description of the performance criterion. This description is used for GUI purposes and automatic parameter type creation for the PerformanceEvaluator operator.

Specified by:

getDescription in class PerformanceCriterion