[DL-Learner SVN] SF.net SVN: dl-learner:[3287] trunk/components-core/src/main/java/org/ dllearner

[<lor...@us...>]

Revision: 3287
          http://dl-learner.svn.sourceforge.net/dl-learner/?rev=3287&view=rev
Author:   lorenz_b
Date:     2011-09-27 08:10:17 +0000 (Tue, 27 Sep 2011)
Log Message:
-----------
Mark datarange axiom if already asserted in the knowledge base.

Modified Paths:
--------------
    trunk/components-core/src/main/java/org/dllearner/algorithms/properties/DataPropertyRangeAxiomLearner.java
    trunk/components-core/src/main/java/org/dllearner/reasoning/SPARQLReasoner.java

Modified: trunk/components-core/src/main/java/org/dllearner/algorithms/properties/DataPropertyRangeAxiomLearner.java
===================================================================
--- trunk/components-core/src/main/java/org/dllearner/algorithms/properties/DataPropertyRangeAxiomLearner.java	2011-09-26 21:22:59 UTC (rev 3286)
+++ trunk/components-core/src/main/java/org/dllearner/algorithms/properties/DataPropertyRangeAxiomLearner.java	2011-09-27 08:10:17 UTC (rev 3287)
@@ -41,6 +41,7 @@
 import org.dllearner.core.owl.ObjectProperty;
 import org.dllearner.kb.SparqlEndpointKS;
 import org.dllearner.kb.sparql.SparqlEndpoint;
+import org.dllearner.reasoning.SPARQLReasoner;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -89,7 +90,10 @@
 		currentlyBestAxioms = new ArrayList<EvaluatedAxiom>();
 		//get existing range
 		DataRange existingRange = reasoner.getRange(propertyToDescribe);
-		logger.debug("Existing range: " + existingRange);
+		if(existingRange != null){
+			existingAxioms.add(new DatatypePropertyRangeAxiom(propertyToDescribe, existingRange));
+			logger.debug("Existing range: " + existingRange);
+		}
 		
 		//get objects with datatypes
 		Map<Individual, SortedSet<Datatype>> individual2Datatypes = new HashMap<Individual, SortedSet<Datatype>>();
@@ -135,6 +139,9 @@
 		for(Entry<Datatype, Integer> entry : sortByValues(result)){
 			evalAxiom = new EvaluatedAxiom(new DatatypePropertyRangeAxiom(propertyToDescribe, entry.getKey()),
 					computeScore(total, entry.getValue()));
+			if(existingAxioms.contains(evalAxiom.getAxiom())){
+				evalAxiom.setAsserted(true);
+			}
 			axioms.add(evalAxiom);
 		}
 		
@@ -172,9 +179,15 @@
 	
 	public static void main(String[] args) throws Exception{
 		SparqlEndpointKS ks = new SparqlEndpointKS(SparqlEndpoint.getEndpointDBpediaLiveAKSW());
+		
+		SPARQLReasoner reasoner = new SPARQLReasoner(ks);
+		reasoner.prepareSubsumptionHierarchy();
+		
 		DataPropertyRangeAxiomLearner l = new DataPropertyRangeAxiomLearner(ks);
-		l.setPropertyToDescribe(new DatatypeProperty("http://dbpedia.org/ontology/background"));
+		l.setReasoner(reasoner);
+		l.setPropertyToDescribe(new DatatypeProperty("http://dbpedia.org/ontology/topSpeed"));
 		l.setMaxExecutionTimeInSeconds(10);
+		l.setReturnOnlyNewAxioms(true);
 		l.init();
 		l.start();
 		System.out.println(l.getCurrentlyBestEvaluatedAxioms(1));

Modified: trunk/components-core/src/main/java/org/dllearner/reasoning/SPARQLReasoner.java
===================================================================
--- trunk/components-core/src/main/java/org/dllearner/reasoning/SPARQLReasoner.java	2011-09-26 21:22:59 UTC (rev 3286)
+++ trunk/components-core/src/main/java/org/dllearner/reasoning/SPARQLReasoner.java	2011-09-27 08:10:17 UTC (rev 3287)
@@ -41,6 +41,7 @@
 import org.dllearner.core.owl.ClassHierarchy;
 import org.dllearner.core.owl.Constant;
 import org.dllearner.core.owl.DataRange;
+import org.dllearner.core.owl.Datatype;
 import org.dllearner.core.owl.DatatypeProperty;
 import org.dllearner.core.owl.DatatypePropertyHierarchy;
 import org.dllearner.core.owl.Description;
@@ -570,8 +571,20 @@
 
 	@Override
 	public DataRange getRange(DatatypeProperty datatypeProperty) {
-		// TODO Auto-generated method stub
-		return null;
+		String query = String.format("SELECT ?range WHERE {" +
+				"<%s> <%s> ?range. FILTER(isIRI(?range))" +
+				"}", 
+				datatypeProperty.getName(), RDFS.range.getURI());
+		
+		ResultSet rs = executeSelectQuery(query);
+		QuerySolution qs;
+		DataRange range = null;
+		while(rs.hasNext()){
+			qs = rs.next();
+			range = new Datatype(qs.getResource("range").getURI());
+			
+		}
+		return range;
 	}
 
 	@Override

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