Keyphrases
- inference control
- data sources
- rdf data
- response time
- semantic query
- query expansion
- database
- sparql queries
- query processing
- web services
- keywords
- query evaluation
- rdf graphs
- query engine
- retrieval systems
- service quality
- service oriented
- linked data
- user queries
- databases
- knowledge base
- semantic web
- data structure
- data model
- user interaction
- query formulation
- result set
- management system
- range queries
- service composition
- complex queries
- relevance feedback
- formal semantics
- data management
- data objects
- metadata
- provenance information
- path queries
- information retrieval
- data integration