Keyphrases
- image retrieval
- detection algorithm
- computational complexity
- learning algorithm
- improved algorithm
- high accuracy
- experimental evaluation
- cost function
- preprocessing
- computational cost
- matching algorithm
- np hard
- significant improvement
- objective function
- optimal solution
- k means
- expectation maximization
- optimization algorithm
- data structure
- similarity estimation
- retrieval method
- times faster
- ant colony optimization
- clustering method
- relevance feedback
- scheduling problem
- data sets
- dynamic programming