com.sun.labs.minion.classification
Class KnowledgeSourceClusterer

java.lang.Object
  com.sun.labs.minion.classification.ContingencyFeatureClusterer
      com.sun.labs.minion.classification.KnowledgeSourceClusterer

All Implemented Interfaces:

FeatureClusterer

public class KnowledgeSourceClusterer
extends ContingencyFeatureClusterer

Provides an implementation of a feature clusterer built around a knowledge source. Variants of the same word will be grouped together into clusters. (Adapted from LiteMorphClusterer.)

Field Summary

protected java.util.Map<java.lang.String,FeatureCluster>

clusterMap A map to hold the clusters keyed on roots

Fields inherited from class com.sun.labs.minion.classification.ContingencyFeatureClusterer

clusters, field, logTag, type

Constructor Summary

KnowledgeSourceClusterer()
Default constructor

KnowledgeSourceClusterer(int type)
Create a new instance of me

Method Summary

protected void	addFeature(ContingencyFeature feat) Adds a feature to this feature clusterer.
FeatureClusterSet	cluster(ResultSetImpl s) Creates a set of clusters based on all of the terms in the documents contained in the ResultSet.
protected FeatureClusterSet	getClusters() Returns a set of feature clusters.
FeatureClusterer	newInstance() A non-static factory method to create a feature clusterer

Methods inherited from class com.sun.labs.minion.classification.ContingencyFeatureClusterer

collectFeatures, newCluster, newFeature, setDocCache, setField

Methods inherited from class java.lang.Object

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

Field Detail

clusterMap

protected java.util.Map<java.lang.String,FeatureCluster> clusterMap

A map to hold the clusters keyed on roots

Constructor Detail

KnowledgeSourceClusterer

public KnowledgeSourceClusterer(int type)

Create a new instance of me

Parameters:

type -

KnowledgeSourceClusterer

public KnowledgeSourceClusterer()

Default constructor

Method Detail

cluster

public FeatureClusterSet cluster(ResultSetImpl s)

Description copied from class: ContingencyFeatureClusterer

Creates a set of clusters based on all of the terms in the documents contained in the ResultSet.

Specified by:

cluster in interface FeatureClusterer

Overrides:

cluster in class ContingencyFeatureClusterer

Parameters:

s - the set of documents from which features are gathered

Returns:

a set of clusters (Features) of features

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

Overrides:

newInstance in class ContingencyFeatureClusterer

Returns:

a feature clusterer instance

getClusters

protected FeatureClusterSet getClusters()

Description copied from class: ContingencyFeatureClusterer

Returns a set of feature clusters. Feature Clusters in this case will be ContingencyFeatures that represent clusters rather than single features. If you're writing your own clusterer, override this method.

Overrides:

getClusters in class ContingencyFeatureClusterer

Returns:

a set of clusters

addFeature

protected void addFeature(ContingencyFeature feat)

Description copied from class: ContingencyFeatureClusterer

Adds a feature to this feature clusterer. This may create a new cluster for the feature, or may add the feature to an existing cluster. If you're writing your own clusterer, override this method.

Overrides:

addFeature in class ContingencyFeatureClusterer

Parameters:

feat - the feature to add