public static void main(String[] args) throws Exception {
QueryTreeFactory factory = new QueryTreeFactoryBase();
Model model = ModelFactory.createDefaultModel();
String lang = "RDF/XML";
model.read(new FileInputStream("someFile"), null, lang);
String exampleURI = "http://example.org/a";
RDFResourceTree tree = factory.getQueryTree(exampleURI, model);
factory.addDropFilters(
new PredicateDropStatementFilter(StopURIsDBpedia.get()),
new PredicateDropStatementFilter(StopURIsRDFS.get()),
new PredicateDropStatementFilter(StopURIsOWL.get()),
new NamespaceDropStatementFilter(
Sets.newHashSet(
"http://dbpedia.org/property/",
"http://purl.org/dc/terms/",
"http://dbpedia.org/class/yago/",
FOAF.getURI())));
ConciseBoundedDescriptionGenerator cbdGen =
new ConciseBoundedDescriptionGeneratorImpl(SparqlEndpoint.getEndpointDBpedia());
String resourceURI = "http://dbpedia.org/resource/Athens";
Model cbd = cbdGen.getConciseBoundedDescription(resourceURI, 2);
RDFResourceTree queryTree = factory.getQueryTree(resourceURI, cbd);
System.out.println(queryTree.getStringRepresentation());
System.out.println(QueryTreeUtils.toSPARQLQuery(queryTree));
}
private void fillTree(
Resource root,
RDFResourceTree tree,
Map<Resource, SortedSet<Statement>> resource2Statements,
int currentDepth,
int maxDepth) {
currentDepth++;
if (resource2Statements.containsKey(root)) {
RDFResourceTree subTree;
for (Statement st : resource2Statements.get(root)) {
Node predicate = st.getPredicate().asNode();
RDFNode object = st.getObject();
if (object.isLiteral()) {
subTree = new RDFResourceTree(nodeId++, object.asNode());
tree.addChild(subTree, predicate);
} else if (object.isURIResource()) {
subTree = new RDFResourceTree(nodeId++, object.asNode());
tree.addChild(subTree, predicate);
// System.out.println(root + "::" + object + "::" + (currentDepth < maxDepth));
if (currentDepth < maxDepth) {
if (currentDepth < maxDepth) {
fillTree(object.asResource(), subTree, resource2Statements, currentDepth, maxDepth);
}
}
} else if (object.isAnon()) {
subTree = new RDFResourceTree(nodeId++);
tree.addChild(subTree, predicate);
if (currentDepth < maxDepth) {
fillTree(object.asResource(), subTree, resource2Statements, currentDepth, maxDepth);
}
}
}
}
currentDepth--;
}
public static void main(String[] args) throws Exception {
QueryTreeFactory qtf = new QueryTreeFactoryBase();
qtf.addDropFilters(
new PredicateDropStatementFilter(StopURIsDBpedia.get()),
new ObjectDropStatementFilter(StopURIsDBpedia.get()),
new PredicateDropStatementFilter(StopURIsRDFS.get()),
new PredicateDropStatementFilter(StopURIsOWL.get()),
new ObjectDropStatementFilter(StopURIsOWL.get()),
new PredicateDropStatementFilter(StopURIsSKOS.get()),
new ObjectDropStatementFilter(StopURIsSKOS.get()),
new NamespaceDropStatementFilter(
Sets.newHashSet(
"http://dbpedia.org/property/",
// "http://purl.org/dc/terms/",
"http://dbpedia.org/class/yago/"
// ,FOAF.getURI()
)),
new PredicateDropStatementFilter(
Sets.newHashSet(
"http://www.w3.org/2002/07/owl#equivalentClass",
"http://www.w3.org/2002/07/owl#disjointWith")));
int maxTreeDepth = 2;
qtf.setMaxDepth(maxTreeDepth);
SparqlEndpoint endpoint =
SparqlEndpoint.create(
"http://sake.informatik.uni-leipzig.de:8890/sparql", "http://dbpedia.org");
SparqlEndpointKS ks = new SparqlEndpointKS(endpoint);
ks.init();
QueryExecutionFactory qef =
new QueryExecutionFactoryHttp(endpoint.getURL().toString(), endpoint.getDefaultGraphURIs());
qef =
CacheUtilsH2.createQueryExecutionFactory(
qef, "/tmp/sparql", false, TimeUnit.DAYS.toMillis(30));
qef = new QueryExecutionFactoryPaginated(qef);
PosNegLPStandard lp = new PosNegLPStandard();
Set<OWLIndividual> posExamples = Sets.newTreeSet();
String posExStr =
"http://dbpedia.org/resource/Big_Star,\n"
+ "http://dbpedia.org/resource/Falling_in_Reverse,\n"
+ "http://dbpedia.org/resource/Kid_Canaveral,\n"
+ "http://dbpedia.org/resource/JEFF_the_Brotherhood,\n"
+ "http://dbpedia.org/resource/The_Terrible_Twos,\n"
+ "http://dbpedia.org/resource/Awolnation,\n"
+ "http://dbpedia.org/resource/Biffy_Clyro,\n"
+ "http://dbpedia.org/resource/White_Wives,\n"
+ "http://dbpedia.org/resource/October_Fall,\n"
+ "http://dbpedia.org/resource/Vandaveer,\n"
+ "http://dbpedia.org/resource/Silverchair,\n"
+ "http://dbpedia.org/resource/Karnataka_(band),\n"
+ "http://dbpedia.org/resource/These_Arms_Are_Snakes,\n"
+ "http://dbpedia.org/resource/Secret_and_Whisper,\n"
+ "http://dbpedia.org/resource/Wounded_Knees,\n"
+ "http://dbpedia.org/resource/Zemlyane,\n"
+ "http://dbpedia.org/resource/Beautiful_Creatures_(band),\n"
+ "http://dbpedia.org/resource/World_Under_Blood,\n"
+ "http://dbpedia.org/resource/Devour_the_Day,\n"
+ "http://dbpedia.org/resource/Ghostwriters,\n"
+ "http://dbpedia.org/resource/From_First_to_Last,\n"
+ "http://dbpedia.org/resource/Gruntruck,\n"
+ "http://dbpedia.org/resource/Excel_(band),\n"
+ "http://dbpedia.org/resource/Starpool,\n"
+ "http://dbpedia.org/resource/Phantasmagoria_(band),\n"
+ "http://dbpedia.org/resource/Cradle_of_Filth,\n"
+ "http://dbpedia.org/resource/Lifescreen,\n"
+ "http://dbpedia.org/resource/I_Am_Kloot,\n"
+ "http://dbpedia.org/resource/The_Afghan_Whigs,\n"
+ "http://dbpedia.org/resource/Deus_(band)";
// String posExStr = "http://dbpedia.org/resource/Ladislaus_the_Posthumous,"
// + " http://dbpedia.org/resource/Nga_Kor_Ming, "
// + "http://dbpedia.org/resource/L._M._Shaw";
posExStr =
"http://dbpedia.org/resource/Super_Robot_Wars_D, http://dbpedia.org/resource/Cosmic_Soldier_(video_game), http://dbpedia.org/resource/Reel_Fishing:_Angler's_Dream, http://dbpedia.org/resource/CR_Parodius_Da!, http://dbpedia.org/resource/Jikandia:_The_Timeless_Land, http://dbpedia.org/resource/Rainbow_Islands_Evolution, http://dbpedia.org/resource/Mega_Man_Battle_Chip_Challenge, http://dbpedia.org/resource/Case_Closed:_The_Mirapolis_Investigation, http://dbpedia.org/resource/Mist_of_Chaos, http://dbpedia.org/resource/Super_Robot_Wars_64, http://dbpedia.org/resource/Panorama_Cotton, http://dbpedia.org/resource/Mad_Stalker:_Full_Metal_Force_(1997_video_game), http://dbpedia.org/resource/Karous, http://dbpedia.org/resource/Gadget_Trial, http://dbpedia.org/resource/Battle_Arena_Toshinden_3, http://dbpedia.org/resource/Record_of_Agarest_War, http://dbpedia.org/resource/Metal_Gear_Solid_2:_Sons_of_Liberty, http://dbpedia.org/resource/Memories_Off:_Yubikiri_no_Kioku, http://dbpedia.org/resource/Harvest_Moon:_Hero_of_Leaf_Valley, http://dbpedia.org/resource/Harvest_Moon:_Back_to_Nature, http://dbpedia.org/resource/Harvest_Moon:_Tree_of_Tranquility, http://dbpedia.org/resource/Ultimate_Shooting_Collection, http://dbpedia.org/resource/Shantae:_Half-Genie_Hero, http://dbpedia.org/resource/Apocalypse:_Desire_Next, http://dbpedia.org/resource/Katekyo_Hitman_Reborn!_Dream_Hyper_Battle!, http://dbpedia.org/resource/Harvest_Moon_DS:_Grand_Bazaar, http://dbpedia.org/resource/Chaos_Field, http://dbpedia.org/resource/Charinko_Hero, http://dbpedia.org/resource/Blue_Flow, http://dbpedia.org/resource/Generation_of_Chaos";
for (String uri : Splitter.on(", ").trimResults().split(posExStr)) {
posExamples.add(new OWLNamedIndividualImpl(IRI.create(uri)));
}
lp.setPositiveExamples(posExamples);
AbstractReasonerComponent reasoner = new SPARQLReasoner(qef);
reasoner.setPrecomputeClassHierarchy(true);
reasoner.setPrecomputeObjectPropertyHierarchy(true);
reasoner.setPrecomputeDataPropertyHierarchy(true);
reasoner.init();
QTL2Disjunctive la = new QTL2Disjunctive(lp, qef);
la.setReasoner(reasoner);
la.setTreeFactory(qtf);
la.setEntailment(Entailment.SIMPLE);
la.setMaxTreeDepth(maxTreeDepth);
la.init();
la.start();
List<EvaluatedRDFResourceTree> solutions = la.getSolutionsAsList();
System.out.println(solutions.size());
RDFResourceTree bestSolution = solutions.get(0).getTree();
System.out.println(bestSolution.getStringRepresentation());
System.out.println(QueryTreeUtils.toSPARQLQueryString(bestSolution));
PredicateExistenceFilterDBpedia filter = new PredicateExistenceFilterDBpedia(null);
System.out.println(filter.filter(bestSolution).getStringRepresentation());
System.out.println(QueryTreeUtils.toSPARQLQueryString(filter.filter(bestSolution)));
}