[DL-Learner SVN] SF.net SVN: dl-learner:[1456] trunk/src/dl-learner/org/dllearner/scripts/ GeoInference.java

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

Revision: 1456
          http://dl-learner.svn.sourceforge.net/dl-learner/?rev=1456&view=rev
Author:   jenslehmann
Date:     2008-10-27 17:25:18 +0000 (Mon, 27 Oct 2008)

Log Message:
-----------
non-working geo inference script

Added Paths:
-----------
    trunk/src/dl-learner/org/dllearner/scripts/GeoInference.java

Added: trunk/src/dl-learner/org/dllearner/scripts/GeoInference.java
===================================================================
--- trunk/src/dl-learner/org/dllearner/scripts/GeoInference.java	                        (rev 0)
+++ trunk/src/dl-learner/org/dllearner/scripts/GeoInference.java	2008-10-27 17:25:18 UTC (rev 1456)
@@ -0,0 +1,88 @@
+/**
+ * Copyright (C) 2007-2008, Jens Lehmann
+ *
+ * This file is part of DL-Learner.
+ * 
+ * DL-Learner is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DL-Learner is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+package org.dllearner.scripts;
+
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.net.URI;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.SortedSet;
+
+import org.dllearner.kb.sparql.SPARQLTasks;
+import org.dllearner.kb.sparql.SparqlEndpoint;
+
+/**
+ * Gets additional geo information from DBpedia-Geonames
+ * mappings.
+ * 
+ * @author Jens Lehmann
+ *
+ */
+public class GeoInference {
+
+	static String geoMappingFile = "src/dbpedia-navigator/data/links_geonames_en.nt";
+	static String outputFile = "src/dbpedia-navigator/data/geo_inference.nt";
+	
+	public static void main(String[] args) throws IOException {
+		// read in mapping file
+		BufferedReader in = new BufferedReader(new FileReader(geoMappingFile));
+		// output file
+		BufferedWriter out = new BufferedWriter(new FileWriter(outputFile));
+		
+		// db.aksw.org SPARQL endpoint
+		SparqlEndpoint endpoint = SparqlEndpoint.getEndpointLOCALGeonames();
+		SPARQLTasks st = new SPARQLTasks(endpoint);
+		
+		URI test = URI.create("http://sws.geonames.org/2959441/");
+		List<URI> parents = new LinkedList<URI>();
+		getParents(st, test, parents);
+		System.out.println(parents);
+		
+		
+//		String line;
+//		while ((line=in.readLine())!=null)
+//		{
+//			st.query(sparqlQueryString)
+//			out.write(line);
+//		}
+		
+		in.close();
+		out.close();
+	}
+	
+	public static List<URI> getParents(SPARQLTasks st, URI geoURI, List<URI> parents) {
+		String query = "SELECT ?x WHERE {<"+geoURI+"> <http://www.geonames.org/ontology#parentFeature> ?x}";
+		System.out.println(query);
+		SortedSet<String> res = st.queryAsSet(query, "x");
+		if(res.size() == 0) {
+			return parents;
+		} else {
+			URI parent = URI.create(res.first());
+			parents.add(parent);
+			// recurse
+			return getParents(st, parent, parents);
+		}
+	}
+	
+}


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