@incollection {NIPS2003_AA61,
  author = " David Kauchak and  Sanjoy Dasgupta",
  title = " An Iterative Improvement Procedure for Hierarchical Clustering",
  booktitle = "Advances in Neural Information Processing Systems 16",
  editor = "Sebastian Thrun and Lawrence Saul and Bernhard {Sch\"{o}lkopf}",
  publisher = "MIT Press",
  address = "Cambridge, MA",
  year = "2004",
  keywords = "hierarchical clustering, k-means, tree structures",
  }