On 2/23/18 7:45 PM, Jason Koh wrote: > Hi Kingsley, > > I did the same thing for my schema but it didn't work, I will debug it > more. > > btw, what does p_score_init (); do? I receive when I run it: > ``` > Error 42001: [Virtuoso Driver][Virtuoso Server]SR185: Undefined > procedure DB.DBA.p_score_init. > at line 5 of Top-Level: > ``` > > I use Virtuoso 7.2.4.2. > > Thanks! > > > With regards, > Jason Koh > cseweb.ucsd.edu/~jbkoh <http://cseweb.ucsd.edu/%7Ejbkoh>
Oops, that was a cut and paste error. That procedure isn't relevant to this kind of built-in reasoning and inference. > > On Fri, Feb 23, 2018 at 1:56 PM, Kingsley Idehen > <kide...@openlinksw.com <mailto:kide...@openlinksw.com>> wrote: > > On 2/22/18 10:33 PM, Jason Koh wrote: >> Just to provide my use case, >> >> I presumed if there is a graph like >> >> ```turtle >> ex:a rdf:type sch:Class1 . >> sch:Class1 owl:equivalentClass sch:Class2 . >> ``` >> . a query like this should work >> ```sparql >> select ?s where { >> ?s rdf:type sch:Class2 . >> } >> ``` >> >> Yes, if you have mapped a built-in inference rule to the named graph that contains you owl:equivalenClass statements. As per my example, map the rule to a graph containing owl:equivalentClass statements, and then reference rule using pragma in your sparql query, to invoke built-in reasoning and inference context. In my example: Graph IRI: <http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl> <http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl> Rule Mapping to Named Graph: rdfs_rule_set ('urn:equivalent:class:inference:rules:demo:2018:16:45', 'http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl <http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl>') Invocation Pragma usage example : DEFINE input:inference 'urn:equivalent:class:inference:rules:demo:2018:16:45' What's missing from my initial response is that you should also load owl:ontology into your named graph, so in my case I would: SPARQL APPEND <http://www.w3.org/2002/07/owl#> TO <http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl <http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl>> . I didn't state that earlier because my named graph <http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl <http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl>> also contains triples from <http://www.w3.org/2002/07/owl#> that describe the nature of owl:equivalentClass relations. That's the problem you are having, following my initial response verbatim :) Kingsley > >> On Thu, Feb 22, 2018 at 5:33 PM, Jason Koh <jb...@eng.ucsd.edu >> <mailto:jb...@eng.ucsd.edu>> wrote: >> >> Hi, >> >> I would like to exploit OWL/RDFS inferences like >> here: >> https://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtSPARQLReasoningTutorial#Step >> >> <https://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VirtSPARQLReasoningTutorial#Step> >> 6.: SPARQL Inference Queries >> >> 1. However, I can't find the "define rules" for >> owl:equivalentClass as mentioned >> here: >> http://docs.openlinksw.com/virtuoso/virtuosotipsandtricksrdfschowlinfrl/ >> >> <http://docs.openlinksw.com/virtuoso/virtuosotipsandtricksrdfschowlinfrl/>. >> >> What is the exact keyword to use owl:equivalentClass like >> ``DEFINE input:same-as "yes"``? >> >> >> 2. And if I use inference instead of transitive search like >> ``rel:ancestorOf+``, is it faster? >> >> Thank you! >> >> >> With regards, >> Jason Koh >> cseweb.ucsd.edu/~jbkoh <http://cseweb.ucsd.edu/%7Ejbkoh> >> > Steps: > > SQL> sparql define get:soft "no-sponge" load > > <http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl> > > <http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl> > ; > > Done. -- 6146 msec. > SQL> rdfs_rule_set > ('urn:equivalent:class:inference:rules:demo:2018:16:45', > > 'http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl > > <http://www.openlinksw.com/data/turtle/ontology_mappings/schemas_mappings/SchemaOrgToOpenLink.ttl>'); > > Done. -- 182 msec. > SQL> p_score_init (); > > Here are links Virtuoso's Reasoning & Inference functionality with > live demo links based on the above > > [1] > > http://lod.openlinksw.com/describe/?url=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2FOrganization&distinct=1 > > <http://lod.openlinksw.com/describe/?url=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2FOrganization&distinct=1> > -- FOAF Organization instances modulo built-in Reasoning & Inference > > [2] > > http://lod.openlinksw.com/describe/?uri=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2FOrganization&inf=urn%3Aequivalent%3Aclass%3Ainference%3Arules%3Ademo%3A2018%3A16%3A45 > > <http://lod.openlinksw.com/describe/?uri=http%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2FOrganization&inf=urn%3Aequivalent%3Aclass%3Ainference%3Arules%3Ademo%3A2018%3A16%3A45> > -- Ditto, but with built-in Reasoning & Inference by initializing > inference rule identified by > <urn:equivalent:class:inference:rules:demo:2018:16:45> . > > Links: > > [1] > http://kidehen.blogspot.com/2014/02/class-equivalence-based-reasoning.html > > <http://kidehen.blogspot.com/2014/02/class-equivalence-based-reasoning.html> > -- Built-In Reasoning & Inference using Class Equivalence Semantics > > [2] > > https://www.linkedin.com/pulse/simple-sparql-based-query-reasoning-inference-example-idehen/ > > <https://www.linkedin.com/pulse/simple-sparql-based-query-reasoning-inference-example-idehen/> > -- Built-In Reasoning & Inference using British Royal Family > relationship types > > [3] > > https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen/ > > <https://www.linkedin.com/pulse/reasoning-inference-using-british-royal-family-part-idehen/> > -- Custom Reasoning & Inference (leveraging SPARQL as Rules > Language via SPIN Vocabulary terms) a using British Royal Family > relationship types > > -- > Regards, > > Kingsley Idehen > Founder & CEO > OpenLink Software (Home Page: http://www.openlinksw.com) > > Weblogs (Blogs): > Legacy Blog: http://www.openlinksw.com/blog/~kidehen/ > <http://www.openlinksw.com/blog/%7Ekidehen/> > Blogspot Blog: http://kidehen.blogspot.com > Medium Blog: https://medium.com/@kidehen > > Profile Pages: > Pinterest: https://www.pinterest.com/kidehen/ > <https://www.pinterest.com/kidehen/> > Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen > <https://www.quora.com/profile/Kingsley-Uyi-Idehen> > Twitter: https://twitter.com/kidehen > Google+: https://plus.google.com/+KingsleyIdehen/about > <https://plus.google.com/+KingsleyIdehen/about> > LinkedIn: http://www.linkedin.com/in/kidehen > <http://www.linkedin.com/in/kidehen> > > Web Identities (WebID): > Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i > <http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i> > : > http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this > > <http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this> > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Virtuoso-users mailing list > Virtuoso-users@lists.sourceforge.net > <mailto:Virtuoso-users@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/virtuoso-users > <https://lists.sourceforge.net/lists/listinfo/virtuoso-users> > > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > > _______________________________________________ > Virtuoso-users mailing list > Virtuoso-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/virtuoso-users -- Regards, Kingsley Idehen Founder & CEO OpenLink Software (Home Page: http://www.openlinksw.com) Weblogs (Blogs): Legacy Blog: http://www.openlinksw.com/blog/~kidehen/ Blogspot Blog: http://kidehen.blogspot.com Medium Blog: https://medium.com/@kidehen Profile Pages: Pinterest: https://www.pinterest.com/kidehen/ Quora: https://www.quora.com/profile/Kingsley-Uyi-Idehen Twitter: https://twitter.com/kidehen Google+: https://plus.google.com/+KingsleyIdehen/about LinkedIn: http://www.linkedin.com/in/kidehen Web Identities (WebID): Personal: http://kingsley.idehen.net/public_home/kidehen/profile.ttl#i : http://id.myopenlink.net/DAV/home/KingsleyUyiIdehen/Public/kingsley.ttl#this
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