ISWC - SPARQL WG panel
WG has just published a first set of six working drafts that indicate what’s coming in SPARQL 1.1. Caveat: no decisions yet, just indications. Naming: SPARQL 1.1 query, update and service description. Picked about 10 out of about 50 proposed extensions. Stable by Spring’10, Completed in Aug’10.
Project expressions - select something in a query that is not just a simple variable. Aggregates - min, max, count, etc. Subqueries - embed one query in another. Negation - sparql 1.0 makes it difficult to ask what is not known, fix this in 1.1. Service description - language for describing common extensions in a given sparql end point. Update language - 1.0 is read-only, member submission of rough draft of update language, will be in 1.1. Update protocol - use of HTTP POST for update. Map basic RDF operations to core HTTP operations (RESTful RDF via sparql). Following are ‘time permitting’, will be done if there is time … Property paths - arbitrary length paths through the graph; regex-alike expressions. Basic federated query - based on ARQ’s SERVICE keyword. Entailment regimes - what does it mean to query SPARQL in the face of RDFS or OWL, or RIF rulesets. Common functions - commonly used built-ins.
Slides here.
Brief intro from WG members. Moved on to Q&A, but I had to leave to check out of the hotel.