Keyphrases
- tree structure
- k means
- learning algorithm
- times faster
- computational complexity
- detection algorithm
- preprocessing
- computational cost
- high accuracy
- theoretical analysis
- experimental evaluation
- cost function
- optimal solution
- objective function
- binary tree
- improved algorithm
- matching algorithm
- dynamic programming
- optimization algorithm
- data sets
- segmentation algorithm
- input data
- decision trees
- worst case
- clustering algorithm
- convergence rate
- graph structure
- nearest neighbor
- significant improvement
- pruning algorithm
- pattern tree
- mining high utility itemsets