Keyphrases
- k means
- dynamic programming
- cost function
- significant improvement
- times faster
- computational cost
- objective function
- optimal solution
- computational complexity
- theoretical analysis
- expectation maximization
- principal component analysis
- high accuracy
- particle swarm optimization
- learning algorithm
- matching algorithm
- topology preserving
- probabilistic model
- np hard
- search space
- preprocessing
- face recognition
- worst case
- experimental evaluation
- input data
- optimization algorithm
- detection algorithm
- similarity measure
- neural network
- kohonen self organizing map