magpie.statistics.performance

Class RegressionStatistics

java.lang.Object

magpie.statistics.performance.BaseStatistics

magpie.statistics.performance.RegressionStatistics

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Commandable, Options, Printable, Savable

Direct Known Subclasses:

TargetRegressionStatistics

public class RegressionStatistics
extends BaseStatistics

Calculates performance statistics for regression models.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
double	MAE Mean absolute error
double	MeasuredMAD Mean absolute deviation of measured values
double	MeasuredMedian Median of mesaured values
double	MeasuredRange Range of measured values
double	MeasuredStdDev Standard deviation of measured values
double	MRE Mean relative error
double	R Pearson's correlation coefficient
double	Rho Spearman's correlation coefficient
double	RMSE Root mean squared error
double	Tau Kendall's rank correlation coefficient

Fields inherited from class magpie.statistics.performance.BaseStatistics

Measured, NumberTested, Predicted, ROC, ROC_AUC

Constructor Summary

Constructors

Constructor and Description
RegressionStatistics()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone()
protected void	evaluate_protected(Dataset results) Internal method for acutally computing results.
java.util.Map<java.lang.String,java.lang.Double>	getStatistics() Retrieve list of statistics stored in this class.
protected void	getStatistics(double[] measured, double[] predicted) Calculate regression statistics
java.lang.String	printBaselineStats() Print statistics about the measured class values.
java.lang.String	toString()

Methods inherited from class magpie.statistics.performance.BaseStatistics

about, evaluate, getROCCurve, getStatisticsNoNaNs, printCommand, printDescription, printROCCurve, printUsage, runCommand, saveCommand, savePerformanceData, setOptions

Methods inherited from class java.lang.Object

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

Field Detail

MAE

public double MAE

Mean absolute error

MRE

public double MRE

Mean relative error

RMSE

public double RMSE

Root mean squared error

R

public double R

Pearson's correlation coefficient

Rho

public double Rho

Spearman's correlation coefficient

Tau

public double Tau

Kendall's rank correlation coefficient

MeasuredStdDev

public double MeasuredStdDev

Standard deviation of measured values

MeasuredMAD

public double MeasuredMAD

Mean absolute deviation of measured values

MeasuredRange

public double MeasuredRange

Range of measured values

MeasuredMedian

public double MeasuredMedian

Median of mesaured values

Constructor Detail

RegressionStatistics

public RegressionStatistics()

Method Detail

evaluate_protected

protected void evaluate_protected(Dataset results)

Description copied from class: BaseStatistics

Internal method for acutally computing results. BaseStatistics.evaluate(Dataset) contains some error-checking code

Specified by:

evaluate_protected in class BaseStatistics

Parameters:

results - Dataset to be evaluated

getStatistics

protected void getStatistics(double[] measured,
                             double[] predicted)

Calculate regression statistics

Parameters:

measured - Measured class variable for each entry

predicted - Predicted class variable for each entry (same order as measured)

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Overrides:

clone in class BaseStatistics

Throws:

java.lang.CloneNotSupportedException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

printBaselineStats

public java.lang.String printBaselineStats()

Description copied from class: BaseStatistics

Print statistics about the measured class values. Useful as context for interpreting how good the performance statistics actually are

Specified by:

printBaselineStats in class BaseStatistics

Returns:

String listing all of the measured baseline statistics

getStatistics

public java.util.Map<java.lang.String,java.lang.Double> getStatistics()

Description copied from class: BaseStatistics

Retrieve list of statistics stored in this class.

Specified by:

getStatistics in class BaseStatistics

Returns:

Map of statistic name to value.