de.unihalle.informatik.MiToBo.math.distributions.impl
Class GaussMixDistribution
java.lang.Object
de.unihalle.informatik.MiToBo.math.distributions.impl.MixtureDistribution
de.unihalle.informatik.MiToBo.math.distributions.impl.GaussMixDistribution
- All Implemented Interfaces:
- EvaluatableDistribution<Jama.Matrix>, FirstOrderMoment<Jama.Matrix>, LogEvaluatableDistribution<Jama.Matrix>, LogProbabilityDensityFunction, ProbabilityDensityFunction, SamplingDistribution<Jama.Matrix>, SecondOrderCentralMoment<Jama.Matrix>, Copyable<GaussMixDistribution>
public class GaussMixDistribution
- extends MixtureDistribution
- implements SamplingDistribution<Jama.Matrix>, FirstOrderMoment<Jama.Matrix>, SecondOrderCentralMoment<Jama.Matrix>, Copyable<GaussMixDistribution>
A multivariate Gaussian mixture distribution.
- Author:
- Oliver Gress
Field Summary |
protected java.util.Random |
rand
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
rand
protected java.util.Random rand
GaussMixDistribution
public GaussMixDistribution(GaussianDistribution[] pdfs,
double[] weights,
java.util.Random rand)
throws java.lang.IllegalArgumentException
- Constructor for weighted Gaussian components
- Parameters:
pdfs
- Gaussian distributionsweights
- weights of Gaussian distributionsrand
- random generator for sampling
- Throws:
java.lang.IllegalArgumentException
- if length of pdfs- and weights-array differs
GaussMixDistribution
public GaussMixDistribution(GaussianDistribution[] pdfs,
java.util.Random rand)
- Constructor with equally weighted Gaussian components
- Parameters:
pdfs
- Gaussian distributionsrand
- random generator for sampling
copy
public GaussMixDistribution copy()
- Specified by:
copy
in interface Copyable<GaussMixDistribution>
drawSample
public Jama.Matrix drawSample()
- Description copied from interface:
SamplingDistribution
- Generate a new sample from this density. This method should create a new object.
- Specified by:
drawSample
in interface SamplingDistribution<Jama.Matrix>
- Returns:
- new sample object
getCovariance
public Jama.Matrix getCovariance()
- Specified by:
getCovariance
in interface SecondOrderCentralMoment<Jama.Matrix>
getMean
public Jama.Matrix getMean()
- Specified by:
getMean
in interface FirstOrderMoment<Jama.Matrix>
setPdf
public void setPdf(int idx,
ProbabilityDensityFunction pdf)
throws java.lang.IllegalArgumentException
- Overrides:
setPdf
in class MixtureDistribution
- Throws:
java.lang.IllegalArgumentException