Ok, i think i got it now, the inference works only with the instances of a
class.
Nevertheless, is it possible to query directly the subclasses? Like:
SELECT * WHERE { ?s rdfs:subClassOf ?o }
And not only the instances?
SELECT * WHERE { ?s rdf:type ?o }
Best Regards,
S.Matovic
-------- Original-Nachricht --------
> Datum: Wed, 17 Sep 2008 20:20:16 +0200
> Von: "S. Matovic" <s.mato...@gmx.net>
> An: Ivan Mikhailov <imikhai...@openlinksw.com>
> CC: virtuoso-users@lists.sourceforge.net
> Betreff: Re: [Virtuoso-users] Inference in Virtuoso 5.07 Sparql DAV
> Web Service?
> Hello Ivan,
>
> maybe i got a wrong association of the word inference.
>
> In joseki/Jena i can get the values0 to value5 with the following Query:
>
> SELECT * FROM <http://localhost:8890/DAV/test> WHERE {?s rdfs:subClassOf
> <http://localhost/values#Value0>}
>
> Is this possible with Virtuoso?
>
> How is such resolving of subclasses called? Inference, Reasoning,
> Indexing?
>
>
> Best Regards.
> S.Matovic
>
>
> -------- Original-Nachricht --------
> > Datum: Thu, 18 Sep 2008 00:19:07 +0700
> > Von: Ivan Mikhailov <imikhai...@openlinksw.com>
> > An: "S. Matovic" <s.mato...@gmx.net>
> > CC: virtuoso-users@lists.sourceforge.net
> > Betreff: Re: [Virtuoso-users] Inference in Virtuoso 5.07 Sparql
> DAV Web Service?
>
> > Hello Srdja,
> >
> > First of all, I guess that
> > rdfs_rule_set ('test, 'http://localhost:8890/DAV/test');
> > is cited incorrectly in the mail and it was actually
> > rdfs_rule_set ('test', 'http://localhost:8890/DAV/test');
> >
> > Second issues is that subClassOf inference has sense only for rdf:type
> > predicate, like in the following example:
> >
> > SQL> sparql insert in <g> { <s> a <http://example/values#Value2> };
> > callret-0
> > VARCHAR
> >
> _______________________________________________________________________________
> >
> > Insert into <g>, 1 triples -- done
> >
> > 1 Rows. -- 6 msec.
> > SQL> sparql define input:inference "test8" SELECT * FROM <g> WHERE {?s
> > a ?t};
> > s t
> > VARCHAR VARCHAR
> >
> _______________________________________________________________________________
> >
> > s http://example/values#Value2
> > s http://example/values#Value1
> > s http://example/values#Value0
> >
> > 3 Rows. -- 5 msec.
> >
> >
> > Best Regards,
> >
> > Ivan Mikhailov,
> > OpenLink Software,
> > http://virtuoso.openlinksw.com
> >
> > On Sat, 2008-09-06 at 19:24 +0200, S. Matovic wrote:
> > > Hello Ivan,
> > >
> > > thanks for your answer.
> > >
> > > I managed to get rdfs:subPropertyOf to work via a rdfs_sule_set but
> > rdfs:subClasOf doesnt do.
> > >
> > > I used the conductor to create a folder and import this dataset:
> > >
> > > <rdf:RDF
> > > xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
> > > xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#";>
> > >
> > > <rdfs:Class rdf:about="http://localhost/values#Value0";>
> > > </rdfs:Class>
> > >
> > > <rdfs:Class rdf:about="http://localhost/values#Value1";>
> > > <rdfs:subClassOf rdf:resource="http://localhost/values#Value0"/>
> > > </rdfs:Class>
> > >
> > > <rdfs:Class rdf:about="http://localhost/values#Value2";>
> > > <rdfs:subClassOf rdf:resource="http://localhost/values#Value1"/>
> > > </rdfs:Class>
> > >
> > > <rdfs:Class rdf:about="http://localhost/values#Value3";>
> > > <rdfs:subClassOf rdf:resource="http://localhost/values#Value2"/>
> > > </rdfs:Class>
> > >
> > > <rdfs:Class rdf:about="http://localhost/values#Value4";>
> > > <rdfs:subClassOf rdf:resource="http://localhost/values#Value3"/>
> > > </rdfs:Class>
> > >
> > > <rdfs:Class rdf:about="http://localhost/values#Value5";>
> > > <rdfs:subClassOf rdf:resource="http://localhost/values#Value4"/>
> > > </rdfs:Class>
> > >
> > > </rdf:RDF>
> > >
> > > Than the interactive sql console:
> > >
> > > rdfs_rule_set ('test, 'http://localhost:8890/DAV/test');
> > >
> > > sparql define input:inference "test"
> > > PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
> > > SELECT * FROM <http://localhost:8890/DAV/test> WHERE {?s
> rdfs:subClassOf
> > <http://localhost/values#Value0>}
> > >
> > >
> > > Result is only http://localhost/values#Value1 instead of Value1-5.
> > >
> > >
> > > Any hint what i did wrong?
> > >
> > > Best Regards,
> > > Srdja Matovic
> > >
> > >
> > > -------- Original-Nachricht --------
> > > > Datum: Wed, 30 Jul 2008 00:58:26 +0700
> > > > Von: Ivan Mikhailov <imikhai...@openlinksw.com>
> > > > An: s.mato...@gmx.net
> > > > CC: virtuoso-users@lists.sourceforge.net
> > > > Betreff: Re: [Virtuoso-users] Inference in Virtuoso 5.07 Sparql DAV
> > Web Service?
> > >
> > > > Hello Srdja,
> > > >
> > > > You can place any 'define param value' configuration options in
> > > > SH_DEFINES field of appropriate row of DB.DBA.SYS_SPARQL_HOST . In
> > that
> > > > table, SH_HOST is a mask for hostname so the row will be used for
> any
> > > > HTTP request such that some name from 'Host:' HTTP header line is
> LIKE
> > > > SH_HOST, SH_GRAPH_URI is "default default graph" that is used if the
> > > > request does not specify default graph, SH_DEFINES is a string of
> > > > options that are inserted at the very beginning of any query before
> > > > execution.
> > > >
> > > > Best Regards,
> > > >
> > > > Ivan Mikhailov,
> > > > OpenLink Software.
> > > >
> > > > On Tue, 2008-07-29 at 13:26 +0200, s.mato...@gmx.net wrote:
> > > > > Heyho,
> > > > >
> > > > > i try to use Virtuosos preconfigured DAV Sparql Interface with
> > > > rdfs:subClassOf and rdfs:subPropertyOf Inference but i found only
> > documentation
> > > > about defining rulesets and using them in sparql queries.
> > > > >
> > > > > Is it possible to configure a SPARQL/SPARUL WebService with
> > Inference?
> > > > >
> > > > > Thanks and Regards,
> > > > > Srdja Matovic
> > >
>
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