Without seeing the data, what can we do?
> The first rule here works and save the individual as GoodStudent when marks
> is greater than 2 but not assign individual to WorstStudent when marks are
> less than 2? Where I am doing mistake here ?
>
>
>
> String rule = "[rule1:(?x http://www.w3.org/1999/02/22-rdf-syntax-ns#type
> http://www.semanticweb.org#Student <http://www.semanticweb.org/#Student>) "
> + "( ?x http://www.semanticweb.org#GPA
> <http://www.semanticweb.org/#GPA> ?marks )"
> + "greaterThan(?marks, 2) "
> + " -> (?x http://www.w3.org/1999/02/22-rdf-syntax-ns#type
> http://www.semanticweb.org#GoodStudent
> <http://www.semanticweb.org/#GoodStudent> )]";
>
>
> String rule = "[rule2:(?y http://www.w3.org/1999/02/22-rdf-syntax-ns#type
> http://www.semanticweb.org#Student <http://www.semanticweb.org/#Student>) "
> + "( ?y http://www.semanticweb.org#GPA
> <http://www.semanticweb.org/#GPA> ?marks )"
> + "lessThan(?marks, 2) "
> + " -> (?y http://www.w3.org/1999/02/22-rdf-syntax-ns#type
> http://www.semanticweb.org#WorstStudent
> <http://www.semanticweb.org/#GoodStudent> )]";
>
> "SELECT * " +
> " WHERE { ?x rdf:type std:GoodStudent . ?y rdf:type
> std:WorstStudent }";
>
> Reasoner reasoner2 = new GenericRuleReasoner(Rule.parseRules(rule));
> InfModel inf = ModelFactory.createInfModel(reasoner2, model);
> Query query = QueryFactory.create(queryString);
>
> QueryExecution qe = QueryExecutionFactory.create(query, inf);
> ResultSet results = qe.execSelect();
>
> ResultSetFormatter.out(System.out, results, query);
> qe.close();
>
> try (FileOutputStream writer = new FileOutputStream("D://std.owl")) {
> inf.write(writer, "RDF/XML");
> } catch (IOException ex) {
> Logger.getLogger(myframe.class.getName()).log(Level.SEVERE,
> null, ex);
> }
>
--
Lorenz Bühmann
AKSW group, University of Leipzig
Group: http://aksw.org - semantic web research center
