Keyphrases
- learning algorithm
- improved algorithm
- detection algorithm
- np hard
- search space
- similarity measure
- times faster
- significant improvement
- selection algorithm
- recognition algorithm
- classification algorithm
- optimization algorithm
- segmentation algorithm
- computational complexity
- preprocessing
- linear programming
- input data
- expectation maximization
- probabilistic model
- tree structure
- experimental evaluation
- optimal solution
- convergence rate
- k means
- objective function