Keyphrases
- data sets
- input data
- times faster
- learning algorithm
- matching algorithm
- preprocessing
- classification algorithm
- experimental evaluation
- selection algorithm
- search space
- improved algorithm
- recognition algorithm
- experimental study
- clustering method
- computationally efficient
- bit rate
- computational cost
- cost function
- k means
- objective function
- high accuracy
- particle swarm optimization
- expectation maximization
- least squares
- probabilistic model
- tree structure
- significant improvement
- artificial neural networks
- convex hull
- optimal solution
- multiscale