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SPARQL revisited

I was happy to see that complex property paths are being considered as an addition to SPARQL as part of the new SPARQL 1.1 work. Lack of transitive closure earlier made me kind of lose interest in SPARQL for a long time, now things might change.

In my RuleML 2006 paper (PDF here) and some other publications I presented a query language for RDF (dubbed "WilburQL") based on path expressions, with the upcoming SPARQL addition I could consider re-implementing this with SPARQL. WilburQL was implemented as part of "Wilbur" (no longer maintained) and our new Python-based toolkit "Piglet" (parts of which were open-sourced recently as part of the "Smart-M3" platform).

Posted by ora at 04:43