Examples of org.semanticweb.HermiT.tableau.Tableau

org.semanticweb.HermiT.tableau.Tableau
This class coordinates the main tableau expansion for a given DLOntology (a normalized and clausified ontology). It represents the state of a run on a set of clauses and coordinates the extension of the ABox and also the retraction of facts when backtracking. Before starting the expansion, the given clauses are (for better performance) preprocessed via the HyperresolutionManager into a compiled and executable form.

        OWLClass pseudoNominal=factory.getOWLClass(IRI.create("internal:pseudo-nominal"));
        OWLClassExpression allNotPseudoNominal=factory.getOWLObjectAllValuesFrom(propertyExpression,pseudoNominal.getObjectComplementOf());
        OWLIndividual freshIndividual=factory.getOWLAnonymousIndividual("fresh-individual");
        OWLAxiom pseudoNominalAssertion=factory.getOWLClassAssertionAxiom(pseudoNominal,freshIndividual);
        OWLAxiom allNotPseudoNominalAssertion=factory.getOWLClassAssertionAxiom(allNotPseudoNominal,freshIndividual);
        Tableau tableau=getTableau(pseudoNominalAssertion,allNotPseudoNominalAssertion);
        return !tableau.isSatisfiable(true,null,null,null,null,null,new ReasoningTaskDescription(true,"symmetry of {0}",H(propertyExpression)));
    }

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        OWLDataFactory factory=getDataFactory();
        OWLIndividual freshIndividualA=factory.getOWLAnonymousIndividual("fresh-individual-A");
        OWLIndividual freshIndividualB=factory.getOWLAnonymousIndividual("fresh-individual-B");
        OWLAxiom assertion1=factory.getOWLObjectPropertyAssertionAxiom(propertyExpression,freshIndividualA,freshIndividualB);
        OWLAxiom assertion2=factory.getOWLObjectPropertyAssertionAxiom(propertyExpression.getInverseProperty(),freshIndividualA,freshIndividualB);
        Tableau tableau=getTableau(assertion1,assertion2);
        return !tableau.isSatisfiable(true,null,null,null,null,null,new ReasoningTaskDescription(true,"asymmetry of {0}",H(propertyExpression)));
    }

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        OWLIndividual freshIndividualA=factory.getOWLAnonymousIndividual("fresh-individual-A");
        OWLIndividual freshIndividualB=factory.getOWLAnonymousIndividual("fresh-individual-B");
        OWLAxiom assertion1=factory.getOWLObjectPropertyAssertionAxiom(propertyExpression,freshIndividualA,freshIndividualB);
        OWLAxiom assertion2=factory.getOWLClassAssertionAxiom(allNotPseudoNominal,freshIndividualB);
        OWLAxiom assertion3=factory.getOWLClassAssertionAxiom(pseudoNominal,freshIndividualA);
        Tableau tableau=getTableau(assertion1,assertion2,assertion3);
        return !tableau.isSatisfiable(true,null,null,null,null,null,new ReasoningTaskDescription(true,"symmetry of {0}",propertyExpression));
    }

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        anonIndChecker.constructConceptsForAnonymousIndividuals(factory,anonymousIndividualAxioms);
        for (OWLAxiom ax : anonIndChecker.getAnonIndAxioms())
            if (!ax.accept(this))
                return false;
        for (OWLAxiom ax : anonIndChecker.getAnonNoNamedIndAxioms()) {
            Tableau t=reasoner.getTableau(ax);
            if (t.isSatisfiable(true,true,null,null,null,null,null,new ReasoningTaskDescription(false,"Anonymous individual check: "+ax.toString())))
                return false;
        }
        return true;
    }

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            OWLDataIntersectionOf dr1=factory.getOWLDataIntersectionOf(factory.getOWLDataComplementOf(dataRange),dt);
            OWLDataIntersectionOf dr2=factory.getOWLDataIntersectionOf(factory.getOWLDataComplementOf(dt),dataRange);
            OWLDataUnionOf union=factory.getOWLDataUnionOf(dr1,dr2);
            OWLClassExpression c=factory.getOWLDataSomeValuesFrom(freshDataProperty,union);
            OWLClassAssertionAxiom ax=factory.getOWLClassAssertionAxiom(c,freshIndividual);
            Tableau tableau=reasoner.getTableau(ax);
            return !tableau.isSatisfiable(true,true,null,null,null,null,null,ReasoningTaskDescription.isAxiomEntailed(axiom));
        }
        else
            return false;
    }

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            axioms.add(factory.getOWLDataPropertyAssertionAxiom(p,individualA,constant));
            axioms.add(factory.getOWLDataPropertyAssertionAxiom(p,individualB,constant));
            i++;
        }
        axioms.add(factory.getOWLDifferentIndividualsAxiom(individualA,individualB));
        Tableau tableau=reasoner.getTableau(axioms.toArray(new OWLAxiom[axioms.size()]));
        return !tableau.isSatisfiable(true,true,null,null,null,null,null,ReasoningTaskDescription.isAxiomEntailed(axiom));
    }

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        OWLIndividual freshIndividualC=factory.getOWLAnonymousIndividual("fresh-individual-C");
        OWLAxiom assertion1=factory.getOWLObjectPropertyAssertionAxiom(propertyExpression,freshIndividualA,freshIndividualB);
        OWLAxiom assertion2=factory.getOWLObjectPropertyAssertionAxiom(propertyExpression,freshIndividualB,freshIndividualC);
        OWLAxiom assertion3=factory.getOWLClassAssertionAxiom(allNotPseudoNominal,freshIndividualA);
        OWLAxiom assertion4=factory.getOWLClassAssertionAxiom(pseudoNominal,freshIndividualC);
        Tableau tableau=getTableau(assertion1,assertion2,assertion3,assertion4);
        return !tableau.isSatisfiable(true,null,null,null,null,null,new ReasoningTaskDescription(true,"transitivity of {0}",H(propertyExpression)));
    }

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                    rolesForConcepts.put(conceptForRole,dataRole);
                }
                OWLAxiom[] additionalAxiomsArray=new OWLAxiom[additionalAxioms.size()];
                additionalAxioms.toArray(additionalAxiomsArray);
                // Run the actual classification task
                Tableau tableau=getTableau(additionalAxiomsArray);
                try {
                    final int numberOfRoles=relevantDataRoles.size();
                    if (m_configuration.reasonerProgressMonitor!=null)
                        m_configuration.reasonerProgressMonitor.reasonerTaskStarted("Classifying data properties...");
                    ClassificationProgressMonitor progressMonitor=new ClassificationProgressMonitor() {

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            OWLTypedLiteral freshConstant=factory.getOWLTypedLiteral("internal:fresh-constant",factory.getOWLDatatype(IRI.create("internal:anonymous-constants")));
            OWLDataProperty negatedSuperDataProperty=factory.getOWLDataProperty(IRI.create("internal:negated-superproperty"));
            OWLAxiom subpropertyAssertion=factory.getOWLDataPropertyAssertionAxiom(subDataProperty,individual,freshConstant);
            OWLAxiom negatedSuperpropertyAssertion=factory.getOWLDataPropertyAssertionAxiom(negatedSuperDataProperty,individual,freshConstant);
            OWLAxiom superpropertyAxiomatization=factory.getOWLDisjointDataPropertiesAxiom(superDataProperty,negatedSuperDataProperty);
            Tableau tableau=getTableau(subpropertyAssertion,negatedSuperpropertyAssertion,superpropertyAxiomatization);
            return !tableau.isSatisfiable(true,null,null,null,null,null,ReasoningTaskDescription.isRoleSubsumedBy(subrole,superrole,false));
        }
    }

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        Set<HierarchyNode<AtomicConcept>> nodes=m_directDataRoleDomains.get(atomicRole);
        if (nodes==null) {
            final Individual freshIndividual=Individual.createAnonymous("fresh-individual");
            final Constant freshConstant=Constant.createAnonymous("fresh-constant");
            final Set<Atom> roleAssertion=Collections.singleton(atomicRole.getRoleAssertion(freshIndividual,freshConstant));
            final Tableau tableau=getTableau();
            HierarchySearch.SearchPredicate<HierarchyNode<AtomicConcept>> searchPredicate=new HierarchySearch.SearchPredicate<HierarchyNode<AtomicConcept>>() {
                public Set<HierarchyNode<AtomicConcept>> getSuccessorElements(HierarchyNode<AtomicConcept> u) {
                    return u.getChildNodes();
                }
                public Set<HierarchyNode<AtomicConcept>> getPredecessorElements(HierarchyNode<AtomicConcept> u) {
                    return u.getParentNodes();
                }
                public boolean trueOf(HierarchyNode<AtomicConcept> u) {
                    AtomicConcept potentialDomainConcept=u.getRepresentative();
                    return !tableau.isSatisfiable(false,roleAssertion,Collections.singleton(Atom.create(potentialDomainConcept,freshIndividual)),null,null,null,ReasoningTaskDescription.isDomainOf(potentialDomainConcept,atomicRole));
                }
            };
            nodes=HierarchySearch.search(searchPredicate,Collections.singleton(m_atomicConceptHierarchy.getTopNode()),null);
            m_directDataRoleDomains.put(atomicRole,nodes);
        }

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Related Classes of org.semanticweb.HermiT.tableau.Tableau

org.semanticweb.HermiT.EntailmentChecker

org.semanticweb.HermiT.model.Atom

org.semanticweb.HermiT.model.Constant

org.semanticweb.HermiT.model.DescriptionGraph

org.semanticweb.HermiT.model.DLPredicate

org.semanticweb.HermiT.model.Individual

org.semanticweb.HermiT.Reasoner

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