[DL-Learner SVN] SF.net SVN: dl-learner:[1647] trunk/src/dl-learner/org/dllearner

[<jen...@us...>]

Revision: 1647
          http://dl-learner.svn.sourceforge.net/dl-learner/?rev=1647&view=rev
Author:   jenslehmann
Date:     2009-03-09 09:58:09 +0000 (Mon, 09 Mar 2009)

Log Message:
-----------
implemented coverage weight in class learning to enable reasonable super class learning

Modified Paths:
--------------
    trunk/src/dl-learner/org/dllearner/algorithms/EvaluatedDescriptionPosNeg.java
    trunk/src/dl-learner/org/dllearner/algorithms/celoe/CELOE.java
    trunk/src/dl-learner/org/dllearner/learningproblems/ClassLearningProblem.java
    trunk/src/dl-learner/org/dllearner/scripts/SemanticBible.java

Modified: trunk/src/dl-learner/org/dllearner/algorithms/EvaluatedDescriptionPosNeg.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/algorithms/EvaluatedDescriptionPosNeg.java	2009-03-07 16:25:26 UTC (rev 1646)
+++ trunk/src/dl-learner/org/dllearner/algorithms/EvaluatedDescriptionPosNeg.java	2009-03-09 09:58:09 UTC (rev 1647)
@@ -77,6 +77,7 @@
 	 * @see org.dllearner.learningproblems.ScorePosNeg#getAccuracy()
 	 * @return Accuracy of the description.
 	 */
+	@Override
 	public double getAccuracy() {
 		return score2.getAccuracy();
 	}

Modified: trunk/src/dl-learner/org/dllearner/algorithms/celoe/CELOE.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/algorithms/celoe/CELOE.java	2009-03-07 16:25:26 UTC (rev 1646)
+++ trunk/src/dl-learner/org/dllearner/algorithms/celoe/CELOE.java	2009-03-09 09:58:09 UTC (rev 1647)
@@ -44,7 +44,6 @@
 import org.dllearner.core.owl.Individual;
 import org.dllearner.core.owl.Intersection;
 import org.dllearner.core.owl.NamedClass;
-import org.dllearner.core.owl.ObjectProperty;
 import org.dllearner.core.owl.Restriction;
 import org.dllearner.core.owl.Thing;
 import org.dllearner.learningproblems.ClassLearningProblem;

Modified: trunk/src/dl-learner/org/dllearner/learningproblems/ClassLearningProblem.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/learningproblems/ClassLearningProblem.java	2009-03-07 16:25:26 UTC (rev 1646)
+++ trunk/src/dl-learner/org/dllearner/learningproblems/ClassLearningProblem.java	2009-03-09 09:58:09 UTC (rev 1647)
@@ -54,6 +54,9 @@
 	private boolean equivalence = true;
 	private ClassLearningProblemConfigurator configurator;
 	
+	// factor for higher weight on coverage (needed for subclass learning)
+	private double coverageFactor;
+	
 	// instances of super classes excluding instances of the class itself
 	private List<Individual> superClassInstances;
 	
@@ -90,6 +93,12 @@
 		classInstances = reasoner.getIndividuals(classToDescribe);
 		equivalence = (configurator.getType().equals("equivalence"));
 		
+		if(equivalence) {
+			coverageFactor = 1;
+		} else {
+			coverageFactor = 3;
+		}
+		
 		// we compute the instances of the super class to perform
 		// optimisations later on
 		Set<Description> superClasses = reasoner.getClassHierarchy().getSuperClasses(classToDescribe);
@@ -165,7 +174,7 @@
 		double coverage = instancesCovered/(double)classInstances.size();
 		double protusion = instancesCovered/(double)retrieval.size();
 		
-		return 0.5d * (coverage + protusion);
+		return (coverageFactor * coverage + protusion) / (coverageFactor + 1);
 	}
 
 	@Override
@@ -239,7 +248,7 @@
 //		System.out.println(instancesDescription);
 //		System.out.println("prot: " + protusion);
 		
-		double acc =  0.5d * (coverage + protusion);
+		double acc = (coverageFactor * coverage + protusion) / (coverageFactor + 1);
 		
 //		System.out.println("acc: " + acc);
 		

Modified: trunk/src/dl-learner/org/dllearner/scripts/SemanticBible.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/scripts/SemanticBible.java	2009-03-07 16:25:26 UTC (rev 1646)
+++ trunk/src/dl-learner/org/dllearner/scripts/SemanticBible.java	2009-03-09 09:58:09 UTC (rev 1647)
@@ -43,7 +43,6 @@
 import org.dllearner.kb.sparql.Cache;
 import org.dllearner.kb.sparql.SparqlKnowledgeSource;
 import org.dllearner.kb.sparql.SparqlQuery;
-import org.dllearner.reasoning.FastInstanceChecker;
 import org.dllearner.reasoning.ReasonerType;
 import org.dllearner.utilities.Files;
 import org.dllearner.utilities.components.ReasonerComponentFactory;
@@ -75,7 +74,7 @@
 	
 	public static String ontologyPath = "examples/semantic_bible/NTNcombined.owl";
 	
-	private static Class<? extends ReasonerComponent> usedReasoner = FastInstanceChecker.class;
+//	private static Class<? extends ReasonerComponent> usedReasoner = FastInstanceChecker.class;
 
 	/**
 	 * @param args


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