Heuristics-based Query Reordering for Federated Queries in SPARQL 1.1 and SPARQL-LD.
Thanos YannakisPavlos FafaliosYannis TzitzikasPublished in: GeoLD-QuWeDa@ESWC (2018)
Keyphrases
- sparql queries
- rdf data
- query engine
- query language
- query evaluation
- query processing
- data sources
- query optimization
- query formulation
- linked data
- data model
- rewriting rules
- query rewriting
- semantic web
- database queries
- cost model
- query execution
- storage and retrieval
- queries involving
- database
- graph patterns
- relational algebra
- complex queries
- rdf graphs
- range queries
- query patterns
- query execution plan
- query plan
- boolean queries
- sql queries
- database systems
- response time
- user queries
- search queries
- database management systems
- xml databases
- xml documents
- selectivity estimation
- databases
- query result
- rdf triples
- search engine
- path queries
- relational databases
- efficient processing
- data management
- answering queries
- query answering
- index structure
- data objects
- aggregate queries
- query terms
- original query