Class SampleAutoCovariance
- java.lang.Object
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- dev.nm.analysis.function.rn2r1.AbstractRealScalarFunction
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- dev.nm.analysis.function.rn2r1.AbstractBivariateRealFunction
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- dev.nm.stat.timeseries.linear.univariate.AutoCovarianceFunction
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- dev.nm.stat.timeseries.linear.univariate.sample.SampleAutoCovariance
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- All Implemented Interfaces:
Function<Vector,Double>,BivariateRealFunction,RealScalarFunction
public class SampleAutoCovariance extends AutoCovarianceFunction
This is the sample Auto-Covariance Function (ACVF) for a univariate data set.
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Nested Class Summary
Nested Classes Modifier and Type Class Description static classSampleAutoCovariance.Typethe available auto-covariance types-
Nested classes/interfaces inherited from interface dev.nm.analysis.function.Function
Function.EvaluationException
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Constructor Summary
Constructors Constructor Description SampleAutoCovariance(IntTimeTimeSeries xt)Construct the sample ACVF for a time series.SampleAutoCovariance(IntTimeTimeSeries xt, SampleAutoCovariance.Type type)Construct the sample ACVF for a time series.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description doubleevaluate(double i, double j)Evaluate y = f(x1,x2).doubleevaluate(int k)Compute the auto-covariance for lagk.-
Methods inherited from class dev.nm.stat.timeseries.linear.univariate.AutoCovarianceFunction
get
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Methods inherited from class dev.nm.analysis.function.rn2r1.AbstractBivariateRealFunction
evaluate
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Methods inherited from class dev.nm.analysis.function.rn2r1.AbstractRealScalarFunction
dimensionOfDomain, dimensionOfRange
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface dev.nm.analysis.function.Function
dimensionOfDomain, dimensionOfRange
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Constructor Detail
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SampleAutoCovariance
public SampleAutoCovariance(IntTimeTimeSeries xt, SampleAutoCovariance.Type type)
Construct the sample ACVF for a time series.- Parameters:
xt- a time seriestype- the auto-covariance type
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SampleAutoCovariance
public SampleAutoCovariance(IntTimeTimeSeries xt)
Construct the sample ACVF for a time series.- Parameters:
xt- a time series
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Method Detail
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evaluate
public double evaluate(int k)
Compute the auto-covariance for lagk.- Parameters:
k- the lag order- Returns:
- γ(k)
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evaluate
public double evaluate(double i, double j)Description copied from interface:BivariateRealFunctionEvaluate y = f(x1,x2).- Parameters:
i- x1j- x2- Returns:
- f(x1, x2)
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