org.apache.mahout.clustering.iterator

Class AbstractClusteringPolicy

java.lang.Object

org.apache.mahout.clustering.iterator.AbstractClusteringPolicy

All Implemented Interfaces:

org.apache.hadoop.io.Writable, ClusteringPolicy

Direct Known Subclasses:

CanopyClusteringPolicy, FuzzyKMeansClusteringPolicy, KMeansClusteringPolicy

public abstract class AbstractClusteringPolicy
extends Object
implements ClusteringPolicy

Constructor Summary

Constructors

Constructor and Description
AbstractClusteringPolicy()

Method Summary

Modifier and Type	Method and Description
Vector	classify(Vector data, ClusterClassifier prior) Classify the data vector given the classifier's models
void	close(ClusterClassifier posterior) Close the policy using the classifier's models
abstract void	readFields(DataInput in)
Vector	select(Vector probabilities) Return a vector of weights for each of the models given those probabilities
void	update(ClusterClassifier posterior) Update the policy with the given classifier
abstract void	write(DataOutput out)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractClusteringPolicy

public AbstractClusteringPolicy()

Method Detail

write

public abstract void write(DataOutput out)
                    throws IOException

Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

IOException

readFields

public abstract void readFields(DataInput in)
                         throws IOException

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

IOException

select

public Vector select(Vector probabilities)

Description copied from interface: ClusteringPolicy

Return a vector of weights for each of the models given those probabilities

Specified by:

select in interface ClusteringPolicy

Parameters:

probabilities - a Vector of pdfs

Returns:

a Vector of weights

update

public void update(ClusterClassifier posterior)

Description copied from interface: ClusteringPolicy

Update the policy with the given classifier

Specified by:

update in interface ClusteringPolicy

Parameters:

posterior - a ClusterClassifier

classify

public Vector classify(Vector data,
                       ClusterClassifier prior)

Description copied from interface: ClusteringPolicy

Classify the data vector given the classifier's models

Specified by:

classify in interface ClusteringPolicy

Parameters:

data - a data Vector

prior - a prior ClusterClassifier

Returns:

a Vector of probabilities that the data is described by each of the models

close

public void close(ClusterClassifier posterior)

Description copied from interface: ClusteringPolicy

Close the policy using the classifier's models

Specified by:

close in interface ClusteringPolicy

Parameters:

posterior - a posterior ClusterClassifier