com.clarkparsia.modularity

Class AxiomBasedModuleExtractor

java.lang.Object

com.clarkparsia.modularity.AbstractModuleExtractor

com.clarkparsia.modularity.AxiomBasedModuleExtractor

All Implemented Interfaces:

ModuleExtractor

public class AxiomBasedModuleExtractor
extends AbstractModuleExtractor

Title:

Description:

Copyright: Copyright (c) 2007

Company: Clark & Parsia, LLC.

Author:

Evren Sirin

Field Summary

Fields

Modifier and Type	Field and Description
static Logger	log

Fields inherited from class com.clarkparsia.modularity.AbstractModuleExtractor

changes, entityAxioms, modules

Constructor Summary

Constructors

Constructor and Description
AxiomBasedModuleExtractor()
AxiomBasedModuleExtractor(com.clarkparsia.owlapi.modularity.locality.LocalityClass localityClass)

Method Summary

Modifier and Type	Method and Description
ModuleExtractor	copy()
Set<org.semanticweb.owlapi.model.OWLAxiom>	extractModule(Set<? extends org.semanticweb.owlapi.model.OWLEntity> signature) Extract the module for a given set of entities.
protected void	extractModuleSignatures(Set<? extends org.semanticweb.owlapi.model.OWLEntity> entities, org.mindswap.pellet.utils.progress.ProgressMonitor monitor)
boolean	isOptimizeForSharedModules() Returns if shared modules optimization is on.
void	setOptimizeForSharedModules(boolean optimizeForSharedModules) Sets the the option to optimize for shared modules during module extraction.

Methods inherited from class com.clarkparsia.modularity.AbstractModuleExtractor

addAxiom, applyChanges, canUpdate, deleteAxiom, extractModules, getAxioms, getAxioms, getEntities, getModuleAxioms, getModuleEntities, getModuleFromSignature, getTimers, isABoxChanged, isChanged, isClassificationNeeded, isLocal, isRBoxChanged, isTBoxChanged, load, resetModules, save

Methods inherited from class java.lang.Object

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

Field Detail

log

public static final Logger log

Constructor Detail

AxiomBasedModuleExtractor

public AxiomBasedModuleExtractor()

AxiomBasedModuleExtractor

public AxiomBasedModuleExtractor(com.clarkparsia.owlapi.modularity.locality.LocalityClass localityClass)

Method Detail

copy

public ModuleExtractor copy()

extractModuleSignatures

protected void extractModuleSignatures(Set<? extends org.semanticweb.owlapi.model.OWLEntity> entities,
                                       org.mindswap.pellet.utils.progress.ProgressMonitor monitor)

Specified by:

extractModuleSignatures in class AbstractModuleExtractor

extractModule

public Set<org.semanticweb.owlapi.model.OWLAxiom> extractModule(Set<? extends org.semanticweb.owlapi.model.OWLEntity> signature)

Extract the module for a given set of entities.

Parameters:

signature - set of entities

Returns:

module for the given signature

isOptimizeForSharedModules

public boolean isOptimizeForSharedModules()

Returns if shared modules optimization is on.

setOptimizeForSharedModules

public void setOptimizeForSharedModules(boolean optimizeForSharedModules)

Sets the the option to optimize for shared modules during module extraction. This option improves the performance of axiom-based module extractor when there are many shared modules in the ontology. This option seems to improve the performance of modularization for NCI thesaurus significantly but has slight overhead for some other ontologies (it is not clear if the overhead would more dramatic in other untested cases). This option has no effect on graph-based extractor which by default includes optimization for shared modules that does not have negative impact on any ontology.