org.datamanager.clustering.strategy.lsa
Class LsaStrategy

java.lang.Object
  |
  +--org.datamanager.clustering.strategy.lsa.LsaStrategy

All Implemented Interfaces:

ClusteringStrategy

public class LsaStrategy

extends Object

implements ClusteringStrategy

This class represents a LSA strategy for clustering emails. Latent Semantic Analysis (or LSA) gives the statistical co-occurrence picks up of the semantic information.

Version:

$Revision: 1.6 $

Author:

Team Helium

Field Summary

static double	DEFAULT_THRESHOLD
static LsaStrategy	instance

Method Summary

void	addEntity(Entity entity) Adds the entity and words within to the Document by Term matrix.
static LsaStrategy	getInstance()
double	getSimilarityBetween(Entity a, Entity b) Gets the similarity between two entities by doing a LSA look up for documents documents clustering matrix.
double	getThreshold()
void	setThreshold(double threshold)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_THRESHOLD

public static final double DEFAULT_THRESHOLD

See Also:

Constant Field Values

instance

public static final LsaStrategy instance

Method Detail

getSimilarityBetween

public double getSimilarityBetween(Entity a,
                                   Entity b)

Gets the similarity between two entities by doing a LSA look up for documents documents clustering matrix.

Specified by:

getSimilarityBetween in interface ClusteringStrategy

addEntity

public void addEntity(Entity entity)

Adds the entity and words within to the Document by Term matrix. FIXME: this place is probably no better than any of other the other places for this.

Specified by:

addEntity in interface ClusteringStrategy

getThreshold

public double getThreshold()

Specified by:

getThreshold in interface ClusteringStrategy

setThreshold

public void setThreshold(double threshold)

Specified by:

setThreshold in interface ClusteringStrategy

getInstance

public static final LsaStrategy getInstance()