gr.demokritos.iit.jinsect.documentModel.comparators
Class CachedDocumentComparator

java.lang.Object
  gr.demokritos.iit.jinsect.documentModel.comparators.StandardDocumentComparator
      gr.demokritos.iit.jinsect.documentModel.comparators.CachedDocumentComparator

All Implemented Interfaces:

NotificationListener, SimilarityComparatorListener, java.io.Serializable

public class CachedDocumentComparator
extends StandardDocumentComparator
implements NotificationListener

An optimized document comparator that uses cached edge information (via NGramCachedGraphComparator) for the graph comparison process.

See Also:

Serialized Form

Field Summary

Fields inherited from class gr.demokritos.iit.jinsect.documentModel.comparators.StandardDocumentComparator

GraphImportance, sGraph, sHistogram

Constructor Summary

CachedDocumentComparator()
Creates an instance of CachedDocumentComparator, using default importance for graph and histogram (0.5).

CachedDocumentComparator(double dGraphImportance)

Method Summary

GraphSimilarity	getSimilarityBetween(java.lang.Object oFirst, java.lang.Object oSecond) Returns the similarity of two given NGramDocuments.
void	Notify(java.lang.Object oSender, java.lang.Object oParams) Acts as a notifier, outputting debug information to the standard error, indicative of the comparison progress.

Methods inherited from class gr.demokritos.iit.jinsect.documentModel.comparators.StandardDocumentComparator

getGraphSimilarity, getHistogramSimilarity

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedDocumentComparator

public CachedDocumentComparator()

Creates an instance of CachedDocumentComparator, using default importance for graph and histogram (0.5).

CachedDocumentComparator

public CachedDocumentComparator(double dGraphImportance)

Method Detail

getSimilarityBetween

public GraphSimilarity getSimilarityBetween(java.lang.Object oFirst,
                                            java.lang.Object oSecond)
                                     throws java.io.InvalidClassException

Description copied from class: StandardDocumentComparator

Returns the similarity of two given NGramDocuments.

Specified by:

getSimilarityBetween in interface SimilarityComparatorListener

Overrides:

getSimilarityBetween in class StandardDocumentComparator

Parameters:

oFirst - The first object participating in the similarity calculation. If not an NGramDocument then an InvalidClassException is thrown.

oSecond - The first object participating in the similarity calculation. If not an NGramDocument then an InvalidClassException is thrown.

Returns:

A GraphSimilarity object indicating the similarity between the two given objects.

Throws:

java.io.InvalidClassException - Throws this exception when the objects are not comparable due to class restrictions.

See Also:

ISimilarity

Notify

public void Notify(java.lang.Object oSender,
                   java.lang.Object oParams)

Acts as a notifier, outputting debug information to the standard error, indicative of the comparison progress.

Specified by:

Notify in interface NotificationListener

Parameters:

oSender - The sender of the notification.

oParams - The parameter object containing a Double number (0.0 to 1.0), that indicated the percentile progress of the process.