Keyphrases
- learning algorithm
- improved algorithm
- k means
- cost function
- experimental evaluation
- preprocessing
- dynamic programming
- optimization algorithm
- principal component analysis
- high accuracy
- computational complexity
- matching algorithm
- convergence rate
- clustering method
- times faster
- worst case
- tree structure
- theoretical analysis
- probabilistic model
- significant improvement
- objective function
- simulated annealing
- input data
- computationally efficient
- neural network
- least squares
- computational cost
- decision trees
- image processing
- negative matrix factorization