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Posted to users@jena.apache.org by Tran Thai Binh <th...@gmail.com> on 2011/11/30 12:15:54 UTC
How to get Pellet inference
Dear all,
I have a problem with inference value. I create two rdf files. One for
schema, one for data
For schema rdf file, I create subclass a2 of a1, and one dataproperty p1.
a2 have definition "a1 and p1 some float[>2]". For data rdf file, I create
some instant belongs to class a1 which have property p1.
I want to run reasoner in Jena to get instant of class a2. I expect some
instant when I query for a2 but Jena returns nothing. I attach rdf files
and my code below. Could anyone help me to solve problem.
At the moment i want to use Pellet as a reasoner but I donnot know how to
join these two rdf files. Please help me.
Thank in advance.
Binh
*(1) for schema*
<?xml version="1.0"?>
<!DOCTYPE rdf:RDF [
<!ENTITY owl "http://www.w3.org/2002/07/owl#" >
<!ENTITY xsd "http://www.w3.org/2001/XMLSchema#" >
<!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#" >
<!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#" >
<!ENTITY Ontology1322586150669 "
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#" >
]>
<rdf:RDF xmlns="
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#"
xml:base="
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:Ontology1322586150669="
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#">
<owl:Ontology rdf:about="
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl"/>
<!--
//////////////////////////////
//////////////////////////////
///////////////////////////
//
// Datatypes
//
///////////////////////////////////////////////////////////////////////////////////////
-->
<!--
///////////////////////////////////////////////////////////////////////////////////////
//
// Data properties
//
///////////////////////////////////////////////////////////////////////////////////////
-->
<!--
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#p1-->
<owl:DatatypeProperty rdf:about="&Ontology1322586150669;p1"/>
<!--
///////////////////////////////////////////////////////////////////////////////////////
//
// Classes
//
///////////////////////////////////////////////////////////////////////////////////////
-->
<!--
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a1-->
<owl:Class rdf:about="&Ontology1322586150669;a1"/>
<!--
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a2-->
<owl:Class rdf:about="&Ontology1322586150669;a2">
<rdfs:subClassOf>
<owl:Class>
<owl:intersectionOf rdf:parseType="Collection">
<rdf:Description rdf:about="&Ontology1322586150669;a1"/>
<owl:Restriction>
<owl:onProperty
rdf:resource="&Ontology1322586150669;p1"/>
<owl:someValuesFrom>
<rdfs:Datatype>
<owl:onDatatype rdf:resource="&xsd;float"/>
<owl:withRestrictions
rdf:parseType="Collection">
<rdf:Description>
<xsd:minExclusive
rdf:datatype="&xsd;integer">2</xsd:minExclusive>
</rdf:Description>
</owl:withRestrictions>
</rdfs:Datatype>
</owl:someValuesFrom>
</owl:Restriction>
</owl:intersectionOf>
</owl:Class>
</rdfs:subClassOf>
</owl:Class>
</rdf:RDF>
<!-- Generated by the OWL API (version 3.2.3.22702)
http://owlapi.sourceforge.net -->
*(2) for data*
<?xml version="1.0"?>
<!DOCTYPE rdf:RDF [
<!ENTITY owl "http://www.w3.org/2002/07/owl#" >
<!ENTITY xsd "http://www.w3.org/2001/XMLSchema#" >
<!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#" >
<!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#" >
<!ENTITY Ontology1322586150669 "
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#" >
]>
<rdf:RDF xmlns="
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl#"
xml:base="
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl"
xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
xmlns:owl="http://www.w3.org/2002/07/owl#"
xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:Ontology1322586150669="
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#">
<owl:Ontology rdf:about="
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl"/>
<!--
///////////////////////////////////////////////////////////////////////////////////////
//
// Datatypes
//
///////////////////////////////////////////////////////////////////////////////////////
-->
<!--
///////////////////////////////////////////////////////////////////////////////////////
//
// Data properties
//
///////////////////////////////////////////////////////////////////////////////////////
-->
<!--
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#p1-->
<owl:DatatypeProperty rdf:about="&Ontology1322586150669;p1"/>
<!--
///////////////////////////////////////////////////////////////////////////////////////
//
// Classes
//
///////////////////////////////////////////////////////////////////////////////////////
-->
<!--
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a1-->
<owl:Class rdf:about="&Ontology1322586150669;a1"/>
<!--
///////////////////////////////////////////////////////////////////////////////////////
//
// Individuals
//
///////////////////////////////////////////////////////////////////////////////////////
-->
<!--
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#c-->
<owl:NamedIndividual rdf:about="&Ontology1322586150669;c">
<rdf:type rdf:resource="&Ontology1322586150669;a1"/>
<Ontology1322586150669:p1
rdf:datatype="&xsd;float">5</Ontology1322586150669:p1>
</owl:NamedIndividual>
<owl:NamedIndividual rdf:about="&Ontology1322586150669;q">
<rdf:type rdf:resource="&Ontology1322586150669;a1"/>
<Ontology1322586150669:p1
rdf:datatype="&xsd;float">1</Ontology1322586150669:p1>
</owl:NamedIndividual>
<!--
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#rf-->
<owl:NamedIndividual rdf:about="&Ontology1322586150669;rf">
<rdf:type rdf:resource="&Ontology1322586150669;a1"/>
<Ontology1322586150669:p1
rdf:datatype="&xsd;float">16</Ontology1322586150669:p1>
</owl:NamedIndividual>
</rdf:RDF>
<!-- Generated by the OWL API (version 3.2.3.22702)
http://owlapi.sourceforge.net -->
*This is my code in Jena*
package query;
import com.hp.hpl.jena.query.*;
import com.hp.hpl.jena.rdf.model.*;
import com.hp.hpl.jena.reasoner.*;
import com.hp.hpl.jena.util.
FileManager;
public class query {
public static void main(String[] args) {
Model schema = FileManager.get().loadModel("O1.owl");
Model data = FileManager.get().loadModel("O2.owl");
Reasoner reasoner = ReasonerRegistry.getOWLReasoner();
reasoner = reasoner.bindSchema(schema);
InfModel infmodel = ModelFactory.createInfModel(reasoner, data);
String queryString =
"PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>"+
"PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>"+
"PREFIX test: <
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#>"+
"select ?data " +
"where {?data a test:a2}";
Query query = QueryFactory.create(queryString);
System.out.println("----------------------");
System.out.println("Query Result Sheet");
System.out.println("----------------------");
System.out.println("Direct&Indirect Descendants (inf)");
System.out.println("-------------------");
// Execute the query and obtain results
QueryExecution qe = QueryExecutionFactory.create(query,
infmodel);
ResultSet results = qe.execSelect();
// Output query results
ResultSetFormatter.out(System.out, results, query);
qe.close();
System.out.println("----------------------");
}
}
--
Trần Thái Bình
GIS and Remote Sensing
thaibinhtran@gmail.com
ttbinh@vast-hcm.ac.vn
Phone: (848) 38247360
mobile:
- Việt Nam -
Re: How to get Pellet inference
Posted by Dave Reynolds <da...@gmail.com>.
Hi,
On Fri, 2011-12-02 at 12:31 +0100, Tran Thai Binh wrote:
> Dear Dave,
> I create a very simple code. It is still error. Sorry, if my question is
> stupid.
[snip]
> -----error----
> WARN [main] (OntDocumentManager.java:1078) - An error occurred while
> attempting to read from
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl.
So this error message is telling you that there is something wrong with
the file at that URL and indeed when I try to go there it gives a 404.
> @prefix : <
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#> .
> @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
> @prefix owl: <http://www.w3.org/2002/07/owl#> .
> @prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
> @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
>
> <http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl>
> rdf:type owl:Ontology ;
> owl:imports <
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl> .
This is the import statement which is causing the problem.
Since there's no reference to that in the rest of your ontology maybe
it's a spurious import and you can just drop the import.
If you do need to import it then you can use the OntDocumentManager to
set up a mapping from the URL in the import statement to a local file.
Dave
Re: How to get Pellet inference
Posted by Tran Thai Binh <th...@gmail.com>.
Dear Dave,
I create a very simple code. It is still error. Sorry, if my question is
stupid.
package query;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.rdf.model.ModelFactory;
public class Query {
public static void main(String[] args) {
OntModel model = ModelFactory.createOntologyModel(
org.mindswap.pellet.jena.PelletReasonerFactory.THE_SPEC);
model.read("file:O1.owl");
model.write(System.out, "Turtle");
}
}
-----error----
WARN [main] (OntDocumentManager.java:1078) - An error occurred while
attempting to read from
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl.
Msg was '
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl'.
com.hp.hpl.jena.shared.DoesNotExistException:
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl
at com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:89)
at com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:178)
at
com.hp.hpl.jena.util.FileManager.readModelWorker(FileManager.java:366)
at com.hp.hpl.jena.util.FileManager.readModel(FileManager.java:334)
at com.hp.hpl.jena.util.FileManager.readModel(FileManager.java:318)
at
com.hp.hpl.jena.ontology.OntDocumentManager.read(OntDocumentManager.java:1064)
at
com.hp.hpl.jena.ontology.OntDocumentManager$1.readModel(OntDocumentManager.java:1034)
at
com.hp.hpl.jena.rdf.model.impl.ModelMakerImpl.getModel(ModelMakerImpl.java:78)
at
com.hp.hpl.jena.ontology.OntDocumentManager.fetchLoadedImportModel(OntDocumentManager.java:1031)
at
com.hp.hpl.jena.ontology.OntDocumentManager.fetchPossiblyCachedImportModel(OntDocumentManager.java:1004)
at
com.hp.hpl.jena.ontology.OntDocumentManager.loadImport(OntDocumentManager.java:977)
at
com.hp.hpl.jena.ontology.OntDocumentManager.loadImports(OntDocumentManager.java:771)
at
com.hp.hpl.jena.ontology.OntDocumentManager.loadImports(OntDocumentManager.java:709)
at
com.hp.hpl.jena.ontology.impl.OntModelImpl.loadImports(OntModelImpl.java:1887)
at
com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:2150)
at com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:202)
at
com.hp.hpl.jena.ontology.impl.OntModelImpl.readDelegate(OntModelImpl.java:3024)
at
com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:2106)
at
com.hp.hpl.jena.ontology.impl.OntModelImpl.read(OntModelImpl.java:2022)
at query.Query.main(Query.java:19)
@prefix : <
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
<http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl>
rdf:type owl:Ontology ;
owl:imports <
http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl> .
:p1 rdf:type owl:DatatypeProperty .
:a1 rdf:type owl:Class .
:a2 rdf:type owl:Class ;
owl:equivalentClass
[ rdf:type owl:Class ;
owl:intersectionOf (:a1 [ rdf:type owl:Restriction ;
owl:onProperty :p1 ;
owl:someValuesFrom
[ rdf:type rdfs:Datatype ;
owl:onDatatype xsd:int ;
owl:withRestrictions
([ xsd:minExclusive 2
])
]
])
] .
Please tell me what is wrong.
Binh
On Fri, Dec 2, 2011 at 10:30 AM, Dave Reynolds <da...@gmail.com>wrote:
> Hi,
>
> On Fri, 2011-12-02 at 10:04 +0100, Tran Thai Binh wrote:
> > Dear Dave,
> > Please show me how to use Pellet with my code. I am totally newbie, I try
> > many way but it it not right way. Please help me.
>
> Try following http://clarkparsia.com/pellet/faq/using-pellet-in-jena/
>
> Dave
>
>
>
--
Trần Thái Bình
GIS and Remote Sensing
thaibinhtran@gmail.com
ttbinh@vast-hcm.ac.vn
Phone: (848) 38247360
mobile:
- Việt Nam -
Re: How to get Pellet inference
Posted by Dave Reynolds <da...@gmail.com>.
Hi,
On Fri, 2011-12-02 at 10:04 +0100, Tran Thai Binh wrote:
> Dear Dave,
> Please show me how to use Pellet with my code. I am totally newbie, I try
> many way but it it not right way. Please help me.
Try following http://clarkparsia.com/pellet/faq/using-pellet-in-jena/
Dave
Re: How to get Pellet inference
Posted by Tran Thai Binh <th...@gmail.com>.
Dear Dave,
Please show me how to use Pellet with my code. I am totally newbie, I try
many way but it it not right way. Please help me.
Thank you,
Binh
On Wed, Nov 30, 2011 at 4:53 PM, Dave Reynolds <da...@gmail.com>wrote:
> On Wed, 2011-11-30 at 12:15 +0100, Tran Thai Binh wrote:
> > Dear all,
> > I have a problem with inference value. I create two rdf files. One for
> > schema, one for data
> > For schema rdf file, I create subclass a2 of a1, and one dataproperty p1.
> > a2 have definition "a1 and p1 some float[>2]". For data rdf file, I
> create
> > some instant belongs to class a1 which have property p1.
> >
> > I want to run reasoner in Jena to get instant of class a2. I expect some
> > instant when I query for a2 but Jena returns nothing. I attach rdf files
> > and my code below. Could anyone help me to solve problem.
>
> As explained earlier on jena-dev you need OWL 2 reasoning for your
> specific example.
>
> > At the moment i want to use Pellet as a reasoner but I donnot know how to
> > join these two rdf files. Please help me.
>
> You don't need to "join" those files. You can simply use the Pellet
> Reasoner the same way you currently are (bindSchema).
>
> If you want to join those files in your program you can use Model.add,
> for example data.add( schema ).
>
> The other option is to use owl:imports in your source data document to
> import the ontology file and then use the OntModel machinery to handle
> the imports for you.
>
> Dave
>
> >
> > Thank in advance.
> > Binh
> >
> >
> >
> > *(1) for schema*
> >
> > <?xml version="1.0"?>
> > <!DOCTYPE rdf:RDF [
> > <!ENTITY owl "http://www.w3.org/2002/07/owl#" >
> > <!ENTITY xsd "http://www.w3.org/2001/XMLSchema#" >
> > <!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#" >
> > <!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#" >
> > <!ENTITY Ontology1322586150669 "
> > http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#"
> >
> > ]>
> > <rdf:RDF xmlns="
> > http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#
> "
> > xml:base="
> > http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl"
> > xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
> > xmlns:owl="http://www.w3.org/2002/07/owl#"
> > xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
> > xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> > xmlns:Ontology1322586150669="
> > http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#
> ">
> > <owl:Ontology rdf:about="
> > http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl
> "/>
> > <!--
> > //////////////////////////////
> > //////////////////////////////
> > ///////////////////////////
> > //
> > // Datatypes
> > //
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > -->
> > <!--
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > //
> > // Data properties
> > //
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > -->
> > <!--
> >
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#p1--
> >
> > <owl:DatatypeProperty rdf:about="&Ontology1322586150669;p1"/>
> > <!--
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > //
> > // Classes
> > //
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > -->
> > <!--
> >
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a1--
> >
> > <owl:Class rdf:about="&Ontology1322586150669;a1"/>
> > <!--
> >
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a2--
> >
> > <owl:Class rdf:about="&Ontology1322586150669;a2">
> > <rdfs:subClassOf>
> > <owl:Class>
> > <owl:intersectionOf rdf:parseType="Collection">
> > <rdf:Description
> rdf:about="&Ontology1322586150669;a1"/>
> > <owl:Restriction>
> > <owl:onProperty
> > rdf:resource="&Ontology1322586150669;p1"/>
> > <owl:someValuesFrom>
> > <rdfs:Datatype>
> > <owl:onDatatype
> rdf:resource="&xsd;float"/>
> > <owl:withRestrictions
> > rdf:parseType="Collection">
> > <rdf:Description>
> > <xsd:minExclusive
> > rdf:datatype="&xsd;integer">2</xsd:minExclusive>
> > </rdf:Description>
> > </owl:withRestrictions>
> > </rdfs:Datatype>
> > </owl:someValuesFrom>
> > </owl:Restriction>
> > </owl:intersectionOf>
> > </owl:Class>
> > </rdfs:subClassOf>
> > </owl:Class>
> > </rdf:RDF>
> > <!-- Generated by the OWL API (version 3.2.3.22702)
> > http://owlapi.sourceforge.net -->
> >
> > *(2) for data*
> > <?xml version="1.0"?>
> > <!DOCTYPE rdf:RDF [
> > <!ENTITY owl "http://www.w3.org/2002/07/owl#" >
> > <!ENTITY xsd "http://www.w3.org/2001/XMLSchema#" >
> > <!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#" >
> > <!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#" >
> > <!ENTITY Ontology1322586150669 "
> > http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#"
> >
> > ]>
> > <rdf:RDF xmlns="
> > http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl#
> "
> > xml:base="
> > http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl"
> > xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
> > xmlns:owl="http://www.w3.org/2002/07/owl#"
> > xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
> > xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> > xmlns:Ontology1322586150669="
> > http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#
> ">
> > <owl:Ontology rdf:about="
> > http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl
> "/>
> > <!--
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > //
> > // Datatypes
> > //
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > -->
> > <!--
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > //
> > // Data properties
> > //
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > -->
> > <!--
> >
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#p1--
> >
> > <owl:DatatypeProperty rdf:about="&Ontology1322586150669;p1"/>
> > <!--
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > //
> > // Classes
> > //
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > -->
> > <!--
> >
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a1--
> >
> > <owl:Class rdf:about="&Ontology1322586150669;a1"/>
> > <!--
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > //
> > // Individuals
> > //
> >
> >
> ///////////////////////////////////////////////////////////////////////////////////////
> > -->
> > <!--
> >
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#c--
> >
> >
> > <owl:NamedIndividual rdf:about="&Ontology1322586150669;c">
> > <rdf:type rdf:resource="&Ontology1322586150669;a1"/>
> > <Ontology1322586150669:p1
> > rdf:datatype="&xsd;float">5</Ontology1322586150669:p1>
> > </owl:NamedIndividual>
> > <owl:NamedIndividual rdf:about="&Ontology1322586150669;q">
> > <rdf:type rdf:resource="&Ontology1322586150669;a1"/>
> > <Ontology1322586150669:p1
> > rdf:datatype="&xsd;float">1</Ontology1322586150669:p1>
> > </owl:NamedIndividual>
> > <!--
> >
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#rf--
> >
> > <owl:NamedIndividual rdf:about="&Ontology1322586150669;rf">
> > <rdf:type rdf:resource="&Ontology1322586150669;a1"/>
> > <Ontology1322586150669:p1
> > rdf:datatype="&xsd;float">16</Ontology1322586150669:p1>
> > </owl:NamedIndividual>
> > </rdf:RDF>
> > <!-- Generated by the OWL API (version 3.2.3.22702)
> > http://owlapi.sourceforge.net -->
> >
> > *This is my code in Jena*
> >
> > package query;
> > import com.hp.hpl.jena.query.*;
> > import com.hp.hpl.jena.rdf.model.*;
> > import com.hp.hpl.jena.reasoner.*;
> > import com.hp.hpl.jena.util.
> > FileManager;
> >
> > public class query {
> >
> > public static void main(String[] args) {
> >
> > Model schema = FileManager.get().loadModel("O1.owl");
> > Model data = FileManager.get().loadModel("O2.owl");
> >
> > Reasoner reasoner = ReasonerRegistry.getOWLReasoner();
> > reasoner = reasoner.bindSchema(schema);
> > InfModel infmodel = ModelFactory.createInfModel(reasoner, data);
> >
> > String queryString =
> > "PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>"+
> > "PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>"+
> > "PREFIX test: <
> > http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#
> >"+
> > "select ?data " +
> > "where {?data a test:a2}";
> >
> > Query query = QueryFactory.create(queryString);
> >
> > System.out.println("----------------------");
> > System.out.println("Query Result Sheet");
> > System.out.println("----------------------");
> > System.out.println("Direct&Indirect Descendants (inf)");
> > System.out.println("-------------------");
> >
> > // Execute the query and obtain results
> > QueryExecution qe = QueryExecutionFactory.create(query,
> > infmodel);
> > ResultSet results = qe.execSelect();
> >
> > // Output query results
> > ResultSetFormatter.out(System.out, results, query);
> >
> > qe.close();
> > System.out.println("----------------------");
> >
> >
> > }
> > }
> >
> >
>
>
>
>
--
Trần Thái Bình
GIS and Remote Sensing
thaibinhtran@gmail.com
ttbinh@vast-hcm.ac.vn
Phone: (848) 38247360
mobile:
- Việt Nam -
Re: How to get Pellet inference
Posted by Dave Reynolds <da...@gmail.com>.
On Wed, 2011-11-30 at 12:15 +0100, Tran Thai Binh wrote:
> Dear all,
> I have a problem with inference value. I create two rdf files. One for
> schema, one for data
> For schema rdf file, I create subclass a2 of a1, and one dataproperty p1.
> a2 have definition "a1 and p1 some float[>2]". For data rdf file, I create
> some instant belongs to class a1 which have property p1.
>
> I want to run reasoner in Jena to get instant of class a2. I expect some
> instant when I query for a2 but Jena returns nothing. I attach rdf files
> and my code below. Could anyone help me to solve problem.
As explained earlier on jena-dev you need OWL 2 reasoning for your
specific example.
> At the moment i want to use Pellet as a reasoner but I donnot know how to
> join these two rdf files. Please help me.
You don't need to "join" those files. You can simply use the Pellet
Reasoner the same way you currently are (bindSchema).
If you want to join those files in your program you can use Model.add,
for example data.add( schema ).
The other option is to use owl:imports in your source data document to
import the ontology file and then use the OntModel machinery to handle
the imports for you.
Dave
>
> Thank in advance.
> Binh
>
>
>
> *(1) for schema*
>
> <?xml version="1.0"?>
> <!DOCTYPE rdf:RDF [
> <!ENTITY owl "http://www.w3.org/2002/07/owl#" >
> <!ENTITY xsd "http://www.w3.org/2001/XMLSchema#" >
> <!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#" >
> <!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#" >
> <!ENTITY Ontology1322586150669 "
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#" >
> ]>
> <rdf:RDF xmlns="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#"
> xml:base="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl"
> xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
> xmlns:owl="http://www.w3.org/2002/07/owl#"
> xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns:Ontology1322586150669="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#">
> <owl:Ontology rdf:about="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl"/>
> <!--
> //////////////////////////////
> //////////////////////////////
> ///////////////////////////
> //
> // Datatypes
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Data properties
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#p1-->
> <owl:DatatypeProperty rdf:about="&Ontology1322586150669;p1"/>
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Classes
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a1-->
> <owl:Class rdf:about="&Ontology1322586150669;a1"/>
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a2-->
> <owl:Class rdf:about="&Ontology1322586150669;a2">
> <rdfs:subClassOf>
> <owl:Class>
> <owl:intersectionOf rdf:parseType="Collection">
> <rdf:Description rdf:about="&Ontology1322586150669;a1"/>
> <owl:Restriction>
> <owl:onProperty
> rdf:resource="&Ontology1322586150669;p1"/>
> <owl:someValuesFrom>
> <rdfs:Datatype>
> <owl:onDatatype rdf:resource="&xsd;float"/>
> <owl:withRestrictions
> rdf:parseType="Collection">
> <rdf:Description>
> <xsd:minExclusive
> rdf:datatype="&xsd;integer">2</xsd:minExclusive>
> </rdf:Description>
> </owl:withRestrictions>
> </rdfs:Datatype>
> </owl:someValuesFrom>
> </owl:Restriction>
> </owl:intersectionOf>
> </owl:Class>
> </rdfs:subClassOf>
> </owl:Class>
> </rdf:RDF>
> <!-- Generated by the OWL API (version 3.2.3.22702)
> http://owlapi.sourceforge.net -->
>
> *(2) for data*
> <?xml version="1.0"?>
> <!DOCTYPE rdf:RDF [
> <!ENTITY owl "http://www.w3.org/2002/07/owl#" >
> <!ENTITY xsd "http://www.w3.org/2001/XMLSchema#" >
> <!ENTITY rdfs "http://www.w3.org/2000/01/rdf-schema#" >
> <!ENTITY rdf "http://www.w3.org/1999/02/22-rdf-syntax-ns#" >
> <!ENTITY Ontology1322586150669 "
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#" >
> ]>
> <rdf:RDF xmlns="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl#"
> xml:base="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl"
> xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
> xmlns:owl="http://www.w3.org/2002/07/owl#"
> xmlns:xsd="http://www.w3.org/2001/XMLSchema#"
> xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns:Ontology1322586150669="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#">
> <owl:Ontology rdf:about="
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586466073.owl"/>
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Datatypes
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Data properties
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#p1-->
> <owl:DatatypeProperty rdf:about="&Ontology1322586150669;p1"/>
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Classes
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#a1-->
> <owl:Class rdf:about="&Ontology1322586150669;a1"/>
> <!--
>
> ///////////////////////////////////////////////////////////////////////////////////////
> //
> // Individuals
> //
>
> ///////////////////////////////////////////////////////////////////////////////////////
> -->
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#c-->
>
> <owl:NamedIndividual rdf:about="&Ontology1322586150669;c">
> <rdf:type rdf:resource="&Ontology1322586150669;a1"/>
> <Ontology1322586150669:p1
> rdf:datatype="&xsd;float">5</Ontology1322586150669:p1>
> </owl:NamedIndividual>
> <owl:NamedIndividual rdf:about="&Ontology1322586150669;q">
> <rdf:type rdf:resource="&Ontology1322586150669;a1"/>
> <Ontology1322586150669:p1
> rdf:datatype="&xsd;float">1</Ontology1322586150669:p1>
> </owl:NamedIndividual>
> <!--
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#rf-->
> <owl:NamedIndividual rdf:about="&Ontology1322586150669;rf">
> <rdf:type rdf:resource="&Ontology1322586150669;a1"/>
> <Ontology1322586150669:p1
> rdf:datatype="&xsd;float">16</Ontology1322586150669:p1>
> </owl:NamedIndividual>
> </rdf:RDF>
> <!-- Generated by the OWL API (version 3.2.3.22702)
> http://owlapi.sourceforge.net -->
>
> *This is my code in Jena*
>
> package query;
> import com.hp.hpl.jena.query.*;
> import com.hp.hpl.jena.rdf.model.*;
> import com.hp.hpl.jena.reasoner.*;
> import com.hp.hpl.jena.util.
> FileManager;
>
> public class query {
>
> public static void main(String[] args) {
>
> Model schema = FileManager.get().loadModel("O1.owl");
> Model data = FileManager.get().loadModel("O2.owl");
>
> Reasoner reasoner = ReasonerRegistry.getOWLReasoner();
> reasoner = reasoner.bindSchema(schema);
> InfModel infmodel = ModelFactory.createInfModel(reasoner, data);
>
> String queryString =
> "PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>"+
> "PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>"+
> "PREFIX test: <
> http://www.semanticweb.org/ontologies/2011/10/Ontology1322586150669.owl#>"+
> "select ?data " +
> "where {?data a test:a2}";
>
> Query query = QueryFactory.create(queryString);
>
> System.out.println("----------------------");
> System.out.println("Query Result Sheet");
> System.out.println("----------------------");
> System.out.println("Direct&Indirect Descendants (inf)");
> System.out.println("-------------------");
>
> // Execute the query and obtain results
> QueryExecution qe = QueryExecutionFactory.create(query,
> infmodel);
> ResultSet results = qe.execSelect();
>
> // Output query results
> ResultSetFormatter.out(System.out, results, query);
>
> qe.close();
> System.out.println("----------------------");
>
>
> }
> }
>
>