Re: ANN: DBpedia Version 2014 released

On 9/10/14 7:47 AM, Kingsley Idehen wrote:
> On 9/10/14 6:01 AM, Bernard Vatant wrote:
>> Hi all
>>
>> Following an off-list answer to Kingsley on the G+ LOV community 
>> conversation [1]
>>
>> - The current state of affair needs to follow the ov:defines 
>> predicates in the ontology description to each of its elements to get 
>> the full description of the ontology content (classes and propertie). 
>> I tried to replace those by owl:imports predicates and submit the 
>> file to Protégé, but after more than one hour it was still struggling 
>> with importing the 3480 elements from their URI, with so many queries 
>> on DBpedia servers. Cleraly not the good solution.
>>
>> - So I tried otherwise, sending to the SPARQL endpoint this very 
>> basic query.
>>
>> CONSTRUCT {?s ?p ?o}
>>
>> WHERE {   ?s rdfs:isDefinedBy <http://dbpedia.org/ontology/>.
>>                   ?s ?p ?o}
>>
>> This is a compact URI for this query result (in RDF/XML) 
>> http://bit.ly/1xHzpv5 which I successfully submitted to either 
>> Protégé or the LOV-Bot.
>> So, seems to me if the ontology namespace had a conneg to such a 
>> query it would be all we need.
>> Or, if you keep the things as they are, we will take internally in 
>> LOV such a URI to feed the LOV-Bot.
>>
>> [1] https://plus.google.com/+BernardVatant/posts/jVVSVbxuDfq
>
> Bernard,
>
> Alternatively, we can implement the following, which basically 
> leverages the much underutilized 
> <http://www.w3.org/2007/05/powder-s#describedby> relation as a 
> mechanism for incorporating an external (outside quad store) ontology 
> terms description document into the DBpedia Ontology description:
>
> ## DBpedia Ontology Fix
>
> # Ontology IRI: <http://dbpedia.org/ontology/>
> # Named Graph IRI: <http://dbpedia.org/ontology/definitions#>
> # Ontology Definitions Document URLs: 
> <http://dbpedia.org/ontology/data/definitions.ttl>,
> # <http://dbpedia.org/ontology/data/definitions.jsonld>, etc..
> # URL Re-write rule:
> # for all lookups requests for: <http://dbpedia.org/ontology/>
> # resolve to (subject to Accept: headers), a SPARQL URL for:
> # DESCRIBE <http://dbpedia.org/ontology/> FROM 
> <http://dbpedia.org/ontology/definitions#>
> #
> # HTTP/WebDAV accessible Docs, generated by internal indirection of 
> SPARQL DESCRIBE or CONSTRUCT:
> # <http://dbpedia.org/ontology/data/definitions.ttl>,
> # <http://dbpedia.org/ontology/data/definitions.jsonld>, etc..
>
>  INSERT
>   {GRAPH <http://dbpedia.org/ontology/definitions#>
>          {
>               ?s rdfs:isDefinedBy <http://dbpedia.org/ontology/>.
> <http://dbpedia.org/ontology/> <http://open.vocab.org/terms/defines> ?s.
> <http://dbpedia.org/ontology/> a owl:Ontology .
>               ?s <http://www.w3.org/2007/05/powder-s#describedby> 
> <http://dbpedia.org/ontology/data/definitions.ttl> .
> <http://dbpedia.org/ontology/dqta/definitions.ttl> 
> <http://open.vocab.org/terms/describes> ?s .
>           }
>   }
>   WHERE
>   {GRAPH <http://dbpedia.org/ontology/definitions#>
>           {
>               {?s rdfs:subClassOf ?o}
>               UNION
>               {?s rdfs:subPropertyOf ?o}
>               UNION
>               {?s owl:equivalentClass ?o}
>               UNION
>               {?s owl:equivalentProperty ?o}
>               UNION
>               {?s a ?o}
>           }
>    }
>
> ETA for this going live:  next 20 - 60 minutes.
>
> Kingsley 

Bernard,

Done.

You can now lookup <http://dbpedia.org/ontology/> and retrieve the 
entire DBpedia ontology, in your preferred document type.

-- 
Regards,

Kingsley Idehen 
Founder & CEO
OpenLink Software
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