@incollection {NIPS2003_AA12,
  author = " Bernd Fischer and  Volker Roth and  Joachim M. Buhmann",
  title = " Clustering with the Connectivity Kernel",
  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 = "clustering, computational complexity, dimensionality reduction, digit recognition, energy function, kernel PCA, energy function, unsupervised learning",
  }