CrowdOp: Query Optimization for Declarative Crowdsourcing Systems.

Ju Fan Meihui Zhang Stanley Kok Meiyu Lu Beng Chin Ooi

Published in: IEEE Trans. Knowl. Data Eng. (2015)

Keyphrases

distributed systems
query optimization
database systems
query processing
cost estimation
multidatabase systems
cost model
xml data
cardinality estimation
query scheduling
query execution
query optimizer
semantic query optimization
query optimizers
approximate query answering
query plan
selectivity estimation