Keyphrases
- times faster
- tree structure
- dynamic programming
- estimation algorithm
- detection algorithm
- worst case
- significant improvement
- preprocessing
- objective function
- real world
- computational complexity
- classification algorithm
- experimental evaluation
- matching algorithm
- learning algorithm
- input data
- search algorithm
- machine learning
- segmentation algorithm
- selection algorithm
- cost function
- optimal solution
- search space
- convergence rate
- recognition algorithm
- convolutional neural network
- ant colony optimization
- optimization algorithm
- computationally efficient
- visual features
- expectation maximization
- high accuracy
- input image
- computational cost
- image retrieval
- face recognition