Keyphrases
- optimal solution
- computational complexity
- times faster
- k means
- improved algorithm
- computationally efficient
- search space
- np hard
- principal component analysis
- matching algorithm
- detection algorithm
- dynamic programming
- experimental evaluation
- online learning
- principal components
- worst case
- neural network
- feature extraction
- passive aggressive
- exhaustive search
- face images
- optimization algorithm
- expectation maximization
- particle swarm optimization
- low dimensional
- dimensionality reduction
- probabilistic model
- computational cost
- objective function
- face recognition