Answering ad hoc aggregate queries from data streams using prefix aggregate trees.
Moonjung ChoJian PeiKe WangPublished in: Knowl. Inf. Syst. (2007)
Keyphrases
- range aggregate queries
- aggregate queries
- data streams
- prefix tree
- tree structure
- aggregate functions
- data cube
- query processing
- range queries
- efficient computation
- data structure
- probabilistic xml
- aggregation functions
- approximate answers
- decision trees
- data sets
- sliding window
- probabilistic databases
- sequential patterns
- frequent patterns
- frequent itemsets
- multi dimensional
- itemsets
- database