On the Semantics of SPARQL Queries with Optional Matching under Entailment Regimes.
Egor V. KostylevBernardo Cuenca GrauPublished in: ISWC (2) (2014)
Keyphrases
- sparql queries
- rdf graphs
- rdf data
- query language
- query optimization
- graph model
- rewriting rules
- relational algebra
- query formulation
- matching algorithm
- cost model
- graph patterns
- pattern matching
- storage and retrieval
- sql queries
- linked data
- databases
- normal form
- query evaluation
- expressive power
- data integration
- semantic web
- data model