Keyphrases
- learning algorithm
- optimization algorithm
- k means
- computational cost
- preprocessing
- dynamic programming
- theoretical analysis
- computationally efficient
- linear programming
- matching algorithm
- experimental evaluation
- convergence rate
- recognition algorithm
- computational complexity
- improved algorithm
- similarity measure
- times faster
- selection algorithm
- tree structure
- expectation maximization
- probabilistic model
- np hard
- cost function
- significant improvement
- search space
- optimal solution
- data sets
- detection algorithm
- markov random field
- monte carlo
- classification algorithm
- closed form
- convex hull
- approximation ratio
- approximation schemes