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java.lang.Object org.knowceans.arms.ArmSampler org.knowceans.dirichlet.sandbox.InvGammaArms
public class InvGammaArms
InvGammaArms implements the inverse of a vague Ga(1,1) as described as the hyperparameter distribution of component mixing proportions for the infinite GMM by Rasmussen (2000).
Field Summary |
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Fields inherited from class org.knowceans.arms.ArmSampler |
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DEREF, EYEPS, XEPS, YCEIL, YEPS |
Constructor Summary | |
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InvGammaArms()
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Method Summary | |
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double |
logpdf(double alpha,
java.lang.Object params)
Implements the posterior distribution to p(alpha^-1) ~ Ga(1,1). |
static void |
main(java.lang.String[] args)
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Methods inherited from class org.knowceans.arms.ArmSampler |
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arms, armsSimple |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public InvGammaArms()
Method Detail |
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public double logpdf(double alpha, java.lang.Object params)
logpdf
in class ArmSampler
alpha
- params
- int[]{number of observations, dimensionality of dirichlet}
public static void main(java.lang.String[] args)
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