Nice Kingsley! Great work. So now....the bad news and where we need
further help still :)
I do want to let everyone know however that within Classes and
Properties...there are a slight few mappings that were taken as an
opinionated view
I.E. they may slightly conflict with other views of the mappings in
Languages that are not English. Or might not seem correctly mapped or
aligned.
But I think most folks know that around here and deal with that everyday in
Wikipedia and Wikidata.
Still, we encourage all communities to review the Schema.org-WD mappings
and voice any issues, errors, mistakes, or alternative viewpoints in this
Wikidata mailing list or the
Github issues.
Thad
+ThadGuidry <https://www.google.com/+ThadGuidry>
On Mon, Oct 17, 2016 at 1:26 PM Kingsley Idehen <kidehen(a)openlinksw.com>
wrote:
On 10/11/16 2:48 PM, Thad Guidry wrote:
Kingsley,
You might ask others on the list who could help more with providing the WD
-
Schema.org mappings or get them into a format that you want...or an RDF
dump file.
I just don't have the knowledge to assist you with that via SPARQL.
(i.e., I am not a SPARQL guru)
-Thad
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Thad,
Having figured out how the Wikidata SPARQL endpoint works, here are the
mappings between Wikidata and
Schema.org using owl:equivalentClass and
owl:equivalentProperty relations. Basically, I am using SPARQL-FED to
produce the desired result using a variety of RDF related document types
(JSON-LD. RDF-Turtle, HTML5+Microdata, and XHTML+RDFa).
We will load this into the DBpedia DBMS which will make this data
available via SPARQL and relevant Linked Data pages, now that the new
2016-04 release is live [1].
##### Equivalent Property Relations Generation #####
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
<http://www.wikidata.org/prop/direct/>
CONSTRUCT {?s owl:equivalentProperty ?o}
WHERE { SERVICE <http://query.wikidata.org/sparql>
<http://query.wikidata.org/sparql>
{
SELECT ?s ?equivalentProperty ?o
WHERE {
?s wdt:P1628 ?o .
BIND (wdt:P1628 as ?equivalentProperty)
FILTER( REGEX(STR(?o), "schema.org"))
}
}
}
Live Links:
[1]
http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=PREFIX+…
-- JSON-LD
[2]
http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=PREFIX+…
-- RDF-Turtle
[3]
http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=PREFIX+…
[4]
http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=PREFIX+…
-- XHTML+RDFa
##### Equivalent Class Relations Generation #####
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
<http://www.wikidata.org/prop/direct/>
CONSTRUCT {?s ?equivalentClass ?o}
WHERE { SERVICE <http://query.wikidata.org/sparql>
<http://query.wikidata.org/sparql>
{
SELECT ?s ?equivalentClass ?o
WHERE { ?s wdt:P1709 ?o .
BIND ( wdt:P1709 as ?equivalentClass)
FILTER( REGEX(STR(?o), "schema.org"))
}
}
}
## Explicit Remapping to owl:equivalentClass relations
## which enables better reasoning and inference oriented data
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
<http://www.wikidata.org/prop/direct/>
CONSTRUCT {?s owl:equivalentClass ?o}
WHERE { SERVICE <http://query.wikidata.org/sparql>
<http://query.wikidata.org/sparql>
{
SELECT ?s ?equivalentClass ?o
WHERE { ?s wdt:P1709 ?o .
BIND ( wdt:P1709 as ?equivalentClass)
FILTER( REGEX(STR(?o), "schema.org"))
}
}
}
Live Links:
[1]
http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=PREFIX+…
-- JSON-LD
[2]
http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=PREFIX+…
-- RDF-Turtle
[3]
http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=PREFIX+…
-- HTML+Microdata
[4]
http://linkeddata.uriburner.com/sparql?default-graph-uri=&query=PREFIX+…
-- XHTML+RDFa
Links:
[1] DBpedia 2016-04 Announcement
--
Regards,
Kingsley Idehen
Founder & CEO
OpenLink Software (Home Page:
http://www.openlinksw.com)
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