@incollection {NIPS2003_AA18,
  author = " Max Welling and  Felix Agakov and  Christopher K. I. Williams",
  title = " Extreme Components Analysis",
  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 = "PCA, learning, probabilistic models, feature extraction, dimensionality reduction, Gaussian density",
  }