Keyphrases
- times faster
- search space
- learning algorithm
- improved algorithm
- preprocessing
- memory efficient
- matching algorithm
- computationally efficient
- experimental evaluation
- k means
- estimation algorithm
- recognition algorithm
- significant improvement
- cost function
- computational cost
- expectation maximization
- theoretical analysis
- segmentation algorithm
- optimization algorithm
- tree structure
- selection algorithm
- convergence rate
- single pass
- worst case
- data sets
- lower bound
- computational complexity
- data structure
- similarity measure
- image processing
- neural network