@article{comparisonthreemethodsofclusteringk,
  title = {Comparison three methods of clustering: k-means, spectral clustering and hierarchical clustering},
  author = {Kamran Kowsari},
  year = {2013},
  eprint = {1312.6117},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1312.6117v2},
}