@incollection {NIPS2003_AA26,
  author = " David Barber and  Felix Agakov",
  title = " The IM Algorithm: A Variational Approach to Information Maximization",
  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 = "information maximization, mutual information, lower bounds, variational methods, information coding, population coding",
  }