An Improved OLAP Join and Aggregate Algorithm Based on Dimension Hierarchy.
Haitao HeYanpeng ZhangJiadong RenChangzhen HuPublished in: FSKD (5) (2009)
Keyphrases
- preprocessing
- theoretical analysis
- detection algorithm
- cost function
- experimental evaluation
- learning algorithm
- probabilistic model
- matching algorithm
- expectation maximization
- computational cost
- dynamic programming
- computational complexity
- improved algorithm
- np hard
- recognition algorithm
- convergence rate
- times faster
- tree structure
- optimal solution
- optimization algorithm
- high accuracy
- data mining
- significant improvement
- data analysis
- simulated annealing
- markov random field
- multi dimensional
- objective function
- hierarchical structure
- search space
- k means