com.sun.labs.minion.classification
Class SimpleClusterer

java.lang.Object
  com.sun.labs.minion.classification.SimpleClusterer

All Implemented Interfaces:

FeatureClusterer

public class SimpleClusterer
extends java.lang.Object
implements FeatureClusterer

Constructor Summary

SimpleClusterer()
Creates a SimpleClusterer

Method Summary

FeatureClusterSet	cluster(ResultSetImpl s) Clusters features with the same name, adding the weights.
protected java.util.Set<WeightedFeature>	collectFeatures(ArrayGroup ag) Collects terms from the array group, creating contingency features for each one.
FeatureCluster	newCluster() A non-static factory method to create a feature cluster
Feature	newFeature() A non-static factory method to create a feature of the type used by this clusterer
FeatureClusterer	newInstance() A non-static factory method to create a feature clusterer
void	setDocCache(DocCache dc) Sets the cache of document vectors that we can use to fetch the words in a given document.
void	setField(java.lang.String field) Sets the field from which features should be drawn.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleClusterer

public SimpleClusterer()

Creates a SimpleClusterer

Method Detail

newInstance

public FeatureClusterer newInstance()

Description copied from interface: FeatureClusterer

A non-static factory method to create a feature clusterer

Specified by:

newInstance in interface FeatureClusterer

Returns:

a feature clusterer instance

newCluster

public FeatureCluster newCluster()

Description copied from interface: FeatureClusterer

A non-static factory method to create a feature cluster

Specified by:

newCluster in interface FeatureClusterer

Returns:

a feature cluster instance

newFeature

public Feature newFeature()

Description copied from interface: FeatureClusterer

A non-static factory method to create a feature of the type used by this clusterer

Specified by:

newFeature in interface FeatureClusterer

Returns:

a feature instance

setField

public void setField(java.lang.String field)

Description copied from interface: FeatureClusterer

Sets the field from which features should be drawn.

Specified by:

setField in interface FeatureClusterer

Parameters:

field - the name of a vectored field upon which the clustering should be based. A value of null indicates that all vectored fields should be considered, while an empty string indicates that data in no explicit field should be considered.

setDocCache

public void setDocCache(DocCache dc)

Description copied from interface: FeatureClusterer

Sets the cache of document vectors that we can use to fetch the words in a given document.

Specified by:

setDocCache in interface FeatureClusterer

cluster

public FeatureClusterSet cluster(ResultSetImpl s)

Clusters features with the same name, adding the weights.

Specified by:

cluster in interface FeatureClusterer

Parameters:

s - the set of documents from which features are gathered

Returns:

a set of clusters (Features) of features

collectFeatures

protected java.util.Set<WeightedFeature> collectFeatures(ArrayGroup ag)

Collects terms from the array group, creating contingency features for each one.

Parameters:

ag - the array group

Returns:

a set of contingency features