Well, you might try to look in this folder location:
.well-known/void
And possibly find a "void:sparqlEndpoint".
But this would be too good to be true.
Regards,
Víctor
El 26/08/2015 10:45, Nandana Mihindukulasooriya escribió:
Hi,
Is there a standard or widely used way of discovering a query endpoint
(SPARQL/LDF) associated with a given Linked Data resource?
I know that a client can use the "follow your nose" and related link
traversal approaches such as [1], but if I wonder if it is possible to
have a hybrid approach in which the dereferenceable Linked Data
resources that optionally advertise query endpoint(s) in a standard
way so that the clients can perform queries on related data.
To clarify the use case a bit, when a client dereferences a resource
URI it gets a set of triples (an RDF graph) [2]. In some cases, it
might be possible that the returned graph could be a subgraph of a
named graph / default graph of an RDF dataset. The client wants to
discover if a query endpoint that exposes the relevant dataset, if one
is available.
For example, something like the following using the "search" link
relation [3].
------
HEAD /resource/Sri_Lanka
Host: http://dbpedia.org
------
200 OK
Link: <http://dbpedia.org/sparql>; rel="search"; type="sparql",
<http://fragments.dbpedia.org/2014/en#dataset>; rel="search"; type="ldf"
... other headers ...
------
Best Regards,
Nandana
[1]
http://swsa.semanticweb.org/sites/g/files/g524521/f/201507/DissertationOlafHartig_0.pdf
[2]
http://www.w3.org/TR/2014/REC-rdf11-concepts-20140225/#section-rdf-graph
[3] http://www.iana.org/assignments/link-relations/link-relations.xhtml
--
Víctor Rodríguez-Doncel
D3205 - Ontology Engineering Group (OEG)
Departamento de Inteligencia Artificial
Facultad de Informática
Universidad Politécnica de Madrid
Campus de Montegancedo s/n
Boadilla del Monte-28660 Madrid, Spain
Tel. (+34) 91336 3672
Skype: vroddon3
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