Keyphrases
- experimental evaluation
- preprocessing
- similarity measure
- learning algorithm
- improved algorithm
- times faster
- optimization algorithm
- np hard
- k means
- computational cost
- dynamic programming
- computational complexity
- simulated annealing
- optimal solution
- cost function
- high accuracy
- search algorithm
- genetic algorithm
- recognition algorithm
- convergence rate
- tree structure
- theoretical analysis
- np complete
- search space
- significant improvement