Lee Feigenbaum wrote:
Last summer I asked around to gather favorite SPARQL queries to help
me put together a SPARQL By Example tutorial/presentation. The only
criterion was that the queries need to be runnable on the Web today.
(i.e., no theoretic queries and no queries that rely on private data
sets)
A bunch of people responded with some great queries, and the result
was the set of slides at [1].
I'll be giving a version of this talk as a tutorial at SemTech in a
couple of weeks, and in preparation for that I'm going through and
updating some of the queries[2], adding some more ones, etc. To that
end, I wanted to turn to the community once again to ask if people
have any new, interesting SPARQL queries or SPARQL'able data sets that
they might care to share.
I welcome simple queries or complex queries, as well as interesting
data sets with SPARQL endpoints, even without specific queries. Of
course, I'll be contributing the results back to the community for
others to (hopefully) benefit from.
In addition to queries that use only standard SPARQL, I'm also
interested in queries that use implementation-specific extensions,
particularly if they involve capabilities that the SPARQL 2 Working
Group is working to standardize[3].
thanks very much!
Lee
[1] http://www.cambridgesemantics.com/2008/09/sparql-by-example/
[2] Somehow a query about Senators McCain and Obama's voting records
seems a bit less relevant now.
[3] http://www.w3.org/2009/sparql/wiki/FeatureProposal
Lee,
See:
1. http://delicious.com/kidehen/virtuoso_sparql_tutorial - a collection
of SPARQL queries (3 part series from basic to advanced with extensions)
2. http://lod.openlinksw.com/b3s/ - short cut to some of the advanced
and extension queries showcased at last year Billion Triples Challenge.
Endpoint: http://lod.openlinksw.com/sparql (over 4.5 Billion Triples at
your disposal and counting).
Note, whenever you get an incomplete result set by way of error (e.g.
some of the Billion Triples queries, simply re-query as this is the
Anytime Query Feature in action).
--
Regards,
Kingsley Idehen Weblog: http://www.openlinksw.com/blog/~kidehen
President & CEO
OpenLink Software Web: http://www.openlinksw.com
