Keyphrases
- preprocessing
- nearest neighbor
- learning algorithm
- detection algorithm
- recognition algorithm
- matching algorithm
- dynamic programming
- experimental evaluation
- computational cost
- improved algorithm
- theoretical analysis
- computationally efficient
- input data
- probabilistic model
- expectation maximization
- optimization algorithm
- clustering method
- tree structure
- linear programming
- neural network
- data points
- np hard
- significant improvement
- optimal solution
- clustering algorithm
- worst case
- nearest neighbor algorithm
- classification algorithm
- segmentation algorithm
- k means
- computational complexity
- machine learning