On the Expressivity of ASK Queries in SPARQL.
Xiaowang ZhangJan Van den BusscheKewen WangHeng ZhangXuanxing YangZhiyong FengPublished in: AAAI (2020)
Keyphrases
- query language
- rdf data
- sparql queries
- query processing
- query evaluation
- data model
- database
- efficient processing
- semantic web
- response time
- query rewriting
- web search engines
- query optimization
- linked data
- range queries
- query engine
- database queries
- complex queries
- user queries
- data sources
- data objects
- relational algebra
- answering queries
- rewriting rules
- query formulation
- query execution
- search queries
- expressive power
- data integration
- xml data
- database systems
- knowledge base