Class LogGammaLogMOMEstimator
- java.lang.Object
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- elki.math.statistics.distribution.estimator.LogGammaLogMOMEstimator
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- All Implemented Interfaces:
DistributionEstimator<LogGammaDistribution>
,LogMOMDistributionEstimator<LogGammaDistribution>
public class LogGammaLogMOMEstimator extends java.lang.Object implements LogMOMDistributionEstimator<LogGammaDistribution>
Simple parameter estimation for the LogGamma distribution. This is a very naive estimation, based on the mean and variance only, sometimes referred to as the "Method of Moments" (MOM). This estimator based on theGammaMOMEstimator
and a simple log data transformation.- Since:
- 0.6.0
- Author:
- Erich Schubert
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
LogGammaLogMOMEstimator.Par
Parameterization class.
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Field Summary
Fields Modifier and Type Field Description static LogGammaLogMOMEstimator
STATIC
Static estimation using just the mean and variance.
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Constructor Summary
Constructors Modifier Constructor Description private
LogGammaLogMOMEstimator()
Private constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description LogGammaDistribution
estimateFromLogStatisticalMoments(StatisticalMoments mv, double shift)
General form of the parameter estimationjava.lang.Class<? super LogGammaDistribution>
getDistributionClass()
Get the class that is produced by the estimator.java.lang.String
toString()
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface elki.math.statistics.distribution.estimator.DistributionEstimator
estimate
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Methods inherited from interface elki.math.statistics.distribution.estimator.LogMOMDistributionEstimator
estimate
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Field Detail
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STATIC
public static final LogGammaLogMOMEstimator STATIC
Static estimation using just the mean and variance.
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Method Detail
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estimateFromLogStatisticalMoments
public LogGammaDistribution estimateFromLogStatisticalMoments(StatisticalMoments mv, double shift)
Description copied from interface:LogMOMDistributionEstimator
General form of the parameter estimation- Specified by:
estimateFromLogStatisticalMoments
in interfaceLogMOMDistributionEstimator<LogGammaDistribution>
- Parameters:
mv
- Statistical momentsshift
- Shifting offset that was used- Returns:
- Estimated distribution
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getDistributionClass
public java.lang.Class<? super LogGammaDistribution> getDistributionClass()
Description copied from interface:DistributionEstimator
Get the class that is produced by the estimator.- Specified by:
getDistributionClass
in interfaceDistributionEstimator<LogGammaDistribution>
- Returns:
- Distribution class
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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