Query Nesting, Assignment, and Aggregation in SPARQL 1.1.
Mark KaminskiEgor V. KostylevBernardo Cuenca GrauPublished in: ACM Trans. Database Syst. (2017)
Keyphrases
- sparql queries
- rdf data
- query engine
- response time
- query processing
- query evaluation
- data model
- database
- aggregate queries
- query expansion
- data sources
- query language
- user queries
- query rewriting
- data structure
- aggregation queries
- linked data
- retrieval method
- aggregation functions
- query optimization
- keywords
- search queries
- query formulation
- databases
- rank aggregation
- data objects
- semantic web
- multi dimensional
- description logics
- result set
- relational algebra
- range queries
- data aggregation
- vector space
- data integration
- information retrieval