Time-Stratified Sampling for Approximate Answers to Aggregate Queries.
João Pedro CostaPedro FurtadoPublished in: DASFAA (2003)
Keyphrases
- complex objects
- aggregate queries
- stratified sampling
- approximate answers
- sampling strategies
- random sampling
- training data
- data cube
- efficient computation
- query processing
- sampling methods
- active learning
- approximate query answering
- probabilistic databases
- data sets
- query answers
- database systems
- nearest neighbor
- databases