Hi all,
I hope this is the right place for this discussion :)
First of all, as developer of software for RDF Linked Data
consumption, I am naturally delighted that Wikidata serves Linked Data
and supports content negotiation (not many services get it right).
However, IMO, the amount of meta-triples not relevant to the requested
entity, and the sheer size of the RDF data that it causes, make
Wikidata's RDF responses pretty much unusable.
Let's take a single entity as an example:
curl -L -H "Accept: text/turtle" 'https://www.wikidata.org/entity/Q1748'
The size of the Turtle response is 1.6MB!
All of the schema metadata such as property and class descriptions are
not needed as they can be discovered by dereferencing the respective
term URIs:
wdno:P2960 a owl:Class ;
owl:complementOf _:e8842935d39a233def3d267ae3737d8c .
_:e8842935d39a233def3d267ae3737d8c a owl:Restriction ;
owl:onProperty wdt:P2960 ;
owl:someValuesFrom owl:Thing .
p:P518 a owl:ObjectProperty .
psv:P518 a owl:ObjectProperty .
pqv:P518 a owl:ObjectProperty .
prv:P518 a owl:ObjectProperty .
wdt:P518 a owl:ObjectProperty .
ps:P518 a owl:ObjectProperty .
pq:P518 a owl:ObjectProperty .
pr:P518 a owl:ObjectProperty .
wd:Q1775415 a wikibase:Item ;
rdfs:label "feminine"@en ;
skos:prefLabel "feminine"@en ;
schema:name "feminine"@en ;
schema:description "grammatical gender"@en .
and so on and so forth.
Then I would argue that the provenance statements such as
<http://www.wikidata.org/entity/statement/Q1748-cfb94fd5-464b-1b83-a513-dd751882b7ce>
are also *not* necessary for the majority of use cases of the majority
of users.
I suppose they are included to provide a complete and "truthy"
response, but by doing so the usability of the data is diminished. I
think the provenance statements should be removed from the default
responses and relegated to some "complete" or "truthy" profile with a
distinct URI, linked to from the default response.
What do you think?
Martynas
atomgraph.com
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