org.apache.mahout.clustering.dirichlet.models
Class NormalModelDistribution

java.lang.Object
  extended by org.apache.mahout.clustering.dirichlet.models.VectorModelDistribution
      extended by org.apache.mahout.clustering.dirichlet.models.NormalModelDistribution
All Implemented Interfaces:
ModelDistribution<VectorWritable>
Direct Known Subclasses:
SampledNormalDistribution

public class NormalModelDistribution
extends VectorModelDistribution

An implementation of the ModelDistribution interface suitable for testing the DirichletCluster algorithm. Uses a Normal Distribution


Constructor Summary
NormalModelDistribution()
           
NormalModelDistribution(VectorWritable modelPrototype)
           
 
Method Summary
 Model<VectorWritable>[] sampleFromPosterior(Model<VectorWritable>[] posterior)
          Return a list of models sampled from the posterior
 Model<VectorWritable>[] sampleFromPrior(int howMany)
          Return a list of models sampled from the prior
 
Methods inherited from class org.apache.mahout.clustering.dirichlet.models.VectorModelDistribution
getModelPrototype, setModelPrototype
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

NormalModelDistribution

public NormalModelDistribution(VectorWritable modelPrototype)

NormalModelDistribution

public NormalModelDistribution()
Method Detail

sampleFromPrior

public Model<VectorWritable>[] sampleFromPrior(int howMany)
Description copied from interface: ModelDistribution
Return a list of models sampled from the prior

Parameters:
howMany - the int number of models to return
Returns:
a Model[] representing what is known apriori

sampleFromPosterior

public Model<VectorWritable>[] sampleFromPosterior(Model<VectorWritable>[] posterior)
Description copied from interface: ModelDistribution
Return a list of models sampled from the posterior

Parameters:
posterior - the Model[] after observations
Returns:
a Model[] representing what is known apriori


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