Keyphrases
- optimal solution
- learning algorithm
- times faster
- np hard
- improved algorithm
- k means
- experimental evaluation
- optimization algorithm
- preprocessing
- theoretical analysis
- tree structure
- detection algorithm
- expectation maximization
- worst case
- natural language processing
- dynamic programming
- cost function
- search space
- computational complexity
- objective function
- convergence rate
- visual languages
- computational cost
- matching algorithm
- segmentation algorithm
- significant improvement
- natural language
- similarity measure