Answering why-not questions on SPARQL queries.

Meng Wang Jun Liu Bifan Wei Siyu Yao Hongwei Zeng Lei Shi

Published in: Knowl. Inf. Syst. (2019)

Keyphrases

sparql queries
rdf data
rewriting rules
query optimization
query formulation
graph model
query language
graph patterns
relational algebra
cost model
multi dimensional
query evaluation
sql queries
query processing
expert systems
data integration
query patterns