An Empirical Evaluation of Cost-based Federated SPARQL Query Processing Engines.
Umair QudusMuhammad SaleemAxel-Cyrille Ngonga NgomoYoung-Koo LeePublished in: CoRR (2021)
Keyphrases
- query processing
- query optimization
- rdf data
- database systems
- data management
- cost model
- query engine
- sparql queries
- high cost
- query execution
- data model
- execution plan
- total cost
- query plan
- database query processing
- linked data
- query language
- query execution plan
- digital libraries
- cost estimation
- data sources
- data sets
- cost sensitive
- r tree
- empirical evaluation
- semantic web
- distributed systems
- maintenance cost
- federated search
- processing queries
- refinement step
- data integration