That makes it imposible to query just ontology properties after loading it. Changing all to same URI and reloading corrected ontology solved all.
Thank you very much, Özgür Eroğlu On 10/17/2013 12:08 AM, Andy Seaborne wrote:
On 16/10/13 18:26, Özgür EROĞLU wrote:I have removed the TDB and reloaded it first with ontology. I think, at his point, before installing the generated data I should see some results to SELECT * { ub:subOrganizationOf ?p ?o } as in the ontology I have the following triples <http://swat.cse.lehigh.edu/onto/univ-bench.owl#subOrganizationOf>In your query example in your first message you had: PREFIX ub: <http://www.lehigh.edu/~zhp2/2004/0401/univ-bench.owl#> so ub:subOrganizationOf is a different URI. Andy<http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#TransitiveProperty> . <http://swat.cse.lehigh.edu/onto/univ-bench.owl#subOrganizationOf> <http://www.w3.org/2000/01/rdf-schema#label> "is part of" . <http://swat.cse.lehigh.edu/onto/univ-bench.owl#subOrganizationOf> <http://www.w3.org/2000/01/rdf-schema#domain> <http://swat.cse.lehigh.edu/onto/univ-bench.owl#Organization> . <http://swat.cse.lehigh.edu/onto/univ-bench.owl#subOrganizationOf> <http://www.w3.org/2000/01/rdf-schema#range> <http://swat.cse.lehigh.edu/onto/univ-bench.owl#Organization> . but I get no results. So I do not understand why this is happening. Should not I see the predicates and objects of the above triples? I am trying to load it with the command s-put http://localhost:3030/ds/data default /JenaTest/ont/univ-bench.nt After this command I load the generated data with again s-put s-put http://localhost:3030/ds/data default /JenaTest/data/all.nt Now I get results both to SELECT * { ub:subOrganizationOf ?p ?o } and SELECT * {?X rdf:type ub:ResearchGroup . ?X ub:subOrganizationOf* <http://www.University0.edu>} But still no results if I use ?X ub:subOrganizationOf <http://www.University0.edu> insted of ?X ub:subOrganizationOf* <http://www.University0.edu> On 10/16/2013 05:51 PM, Andy Seaborne wrote:On 16/10/13 13:37, Özgür EROĞLU wrote:Hi,Yes, when I run queries that does not require inference, I get results.I think my problem is related to your second question. How can I loadthe ontology into TDB? I load the generated lubm data with s-put, should I merge data and ontology before loading? At some of the configurationsI have seen on web, there was a line which was smt. like "ja:scheme <#sch>" in the fuseki inf-model section of the configuration. Is that related?Yes.SELECT * {?X rdf:type ub:ResearchGroup . ?X ub:subOrganizationOf* <http://www.University0.edu>} returns nothing,that query imitates transitivity of ub:subOrganizationOf. If it returns nothing then maybe there is something else going on, not inference related. You seem to have some inference judging by thw results below. Break the query up into parts, like SELECT * {?X rdf:type ub:ResearchGroup .} LIMIT 10SELECT * { ?X ub:subOrganizationOf <http://www.University0.edu>} LIMIT 10but SELECT * { ub:subOrganizationOf ?p ?o } returns----------------------------------------------------------------------------------------------------------| p | o |==========================================================================================================| rdf:type | rdf:Property | | rdf:type | <http://www.w3.org/2000/01/rdf-schema#Resource> | | <http://www.w3.org/2000/01/rdf-schema#subPropertyOf> | ub:subOrganizationOf |----------------------------------------------------------------------------------------------------------ub:subOrganizationOf isn't declared to be transitiveÖzgür Eroğlu On 10/16/2013 03:08 PM, Andy Seaborne wrote:Hi there, When you run a query that does not require inferenc, do you get any results? Is the ontology loaded into the TDB store? Does this query return anything: SELECT * {?X rdf:type ub:ResearchGroup . ?X ub:subOrganizationOf* <http://www.University0.edu>} and this one: SELECT * { ub:subOrganizationOf ?p ?o } Andy On 15/10/13 20:05, Özgür EROĞLU wrote:Hi all, I am trying to configure Fuseki with inference and TDB and using a LUBMgenerated data for testing. I have searched for similar configurations(one of which is here) and read the documentation for Fuseki configuration . Following is my Fuseki configuration :#------------------------------------------------------------------------------------------------------# Licensed under the terms of http://www.apache.org/licenses/LICENSE-2.0 @prefix : <#> . @prefix fuseki: <http://jena.apache.org/fuseki#> . @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . @prefix tdb: <http://jena.hpl.hp.com/2008/tdb#> . @prefix ja: <http://jena.hpl.hp.com/2005/11/Assembler#> . [] rdf:type fuseki:Server ; fuseki:services ( <#service1> ) . # Custom code. [] ja:loadClass "com.hp.hpl.jena.tdb.TDB" .LUBM# TDB tdb:DatasetTDB rdfs:subClassOf ja:RDFDataset . tdb:GraphTDB rdfs:subClassOf ja:Model . ## --------------------------------------------------------------- ## Service with only SPARQL query on an inference model. ## Inference model bbase data in TDB. <#service1> rdf:type fuseki:Service ; fuseki:name "ds" ; # http://host/inf fuseki:serviceQuery "sparql" ; # SPARQL query service fuseki:serviceUpdate "update" ; fuseki:serviceQuery "query" ; fuseki:serviceUpload "upload" ; fuseki:serviceReadWriteGraphStore "data" ; fuseki:serviceReadGraphStore "get" ; fuseki:dataset <#dataset> ; . <#dataset> rdf:type ja:RDFDataset ; ja:defaultGraph <#model_inf> ; . <#model_inf> a ja:InfModel ; ja:baseModel <#tdbGraph> ; ja:reasoner [ ja:reasonerURL <http://jena.hpl.hp.com/2003/OWLFBRuleReasoner>; ] . <#tdbDataset> rdf:type tdb:DatasetTDB ; tdb:location "/tdb/" ; . <#tdbGraph> rdf:type tdb:GraphTDB ; tdb:dataset <#tdbDataset> .#------------------------------------------------------------------------------------------------------I load a dataset which was generated with LUBM data generator. Thegenerator is UBA1.7 and the ontology is an owl file named Univ-Bench.My problem here is that when I run a sparql query that requires inference, I get no result. For example, although the data includes triples like#------------------------------------------------------------------------------------------------------<http://www.Department14.University0.edu/ResearchGroup0> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type><http://www.lehigh.edu/~zhp2/2004/0401/univ-bench.owl#ResearchGroup> .<http://www.Department14.University0.edu/ResearchGroup0><http://www.lehigh.edu/~zhp2/2004/0401/univ-bench.owl#subOrganizationOf><http://www.Department14.University0.edu> . <http://www.Department14.University0.edu><http://www.lehigh.edu/~zhp2/2004/0401/univ-bench.owl#subOrganizationOf><http://www.University0.edu> .#------------------------------------------------------------------------------------------------------when I run the following sparql query, I get no result(empty resultset).#------------------------------------------------------------------------------------------------------PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX ub: <http://www.lehigh.edu/~zhp2/2004/0401/univ-bench.owl#> SELECT ?X WHERE {?X rdf:type ub:ResearchGroup . ?X ub:subOrganizationOf <http://www.University0.edu>}#------------------------------------------------------------------------------------------------------I think Fuseki somehow should know about the ontology (univ-bench). Also I am not sure whether my Fuseki configuration is ok or not for inference (e.g. if my reasoner is the right one). Could someone explain what I am missing here and why I could not get correct results? Regards, Özgür Eroğlu
