On the computational complexity of the LBG and PNN algorithms

@article{Shanbehzadeh1997OnTC,
  title={On the computational complexity of the LBG and PNN algorithms},
  author={Jamshid Shanbehzadeh and Philip Ogunbona},
  journal={IEEE transactions on image processing : a publication of the IEEE Signal Processing Society},
  year={1997},
  volume={6 4},
  pages={614-6}
}
This correspondence compares the computational complexity of the pair-wise nearest neighbor (PNN) and Linde-Buzo-Gray (LBG) algorithms by deriving analytical expressions for their computational times. It is shown that for a practical codebook size and training vector sequence, the LBG algorithm is indeed more computationally efficient than the PNN algorithm. 
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