org.semanticweb.owlapi.metrics.HiddenGCICount Maven / Gradle / Ivy
/*
* This file is part of the OWL API.
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* Copyright (C) 2011, The University of Manchester
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* Alternatively, the contents of this file may be used under the terms of the Apache License, Version 2.0
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* Copyright 2011, University of Manchester
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package org.semanticweb.owlapi.metrics;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.semanticweb.owlapi.model.OWLClass;
import org.semanticweb.owlapi.model.OWLEquivalentClassesAxiom;
import org.semanticweb.owlapi.model.OWLOntology;
import org.semanticweb.owlapi.model.OWLOntologyChange;
import org.semanticweb.owlapi.model.OWLOntologyManager;
import org.semanticweb.owlapi.model.OWLSubClassOfAxiom;
/** Author: Matthew Horridge
* The University Of Manchester
* Bio-Health Informatics Group
* Date: 13-Aug-2007
*
*
* Counts the number of "hidden" GCIs in an ontology imports closure. A GCI is
* regarded to be a "hidden" GCI if it is essentially introduce via an
* equivalent class axiom and a subclass axioms where the LHS of the subclass
* axiom is nameed. For example, A equivalentTo p some C, A subClassOf B results
* in a "hidden" GCI. */
public class HiddenGCICount extends IntegerValuedMetric {
/** @param owlOntologyManager
* manager to use */
public HiddenGCICount(OWLOntologyManager owlOntologyManager) {
super(owlOntologyManager);
}
@Override
protected void disposeMetric() {}
@Override
protected boolean isMetricInvalidated(List changes) {
for (OWLOntologyChange chg : changes) {
if (chg.isAxiomChange()) {
if (chg.getAxiom() instanceof OWLEquivalentClassesAxiom
|| chg.getAxiom() instanceof OWLSubClassOfAxiom) {
return true;
}
}
}
return false;
}
@Override
protected Integer recomputeMetric() {
Set processed = new HashSet();
Set result = new HashSet();
for (OWLOntology ont : getOntologies()) {
for (OWLClass cls : ont.getClassesInSignature()) {
if (!processed.contains(cls)) {
processed.add(cls);
} else {
continue;
}
boolean foundEquivalentClassesAxiom = false;
boolean foundSubClassAxiom = false;
for (OWLOntology o : getOntologies()) {
if (!foundEquivalentClassesAxiom) {
foundEquivalentClassesAxiom = !o.getEquivalentClassesAxioms(cls)
.isEmpty();
}
if (!foundSubClassAxiom) {
foundSubClassAxiom = !o.getSubClassAxiomsForSubClass(cls)
.isEmpty();
}
if (foundSubClassAxiom && foundEquivalentClassesAxiom) {
result.add(cls);
break;
}
}
}
}
return result.size();
}
@Override
public String getName() {
return "Hidden GCI Count";
}
}