Keyphrases
- objective function
- optimization algorithm
- experimental evaluation
- improved algorithm
- times faster
- theoretical analysis
- computational cost
- learning algorithm
- similarity measure
- preprocessing
- dynamic programming
- neural network
- recognition algorithm
- particle swarm optimization
- simulated annealing
- worst case
- cost function
- linear programming
- query expansion
- significant improvement
- test collection
- tree structure
- optimal solution
- decision trees
- data sets
- iterative optimization