@incollection {NIPS2003_AA52,
  author = " Pedro F. Felzenszwalb and  Daniel P. Huttenlocher and  Jon M. Kleinberg",
  title = " Fast Algorithms for Large-State-Space HMMs with Applications to Web Usage 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 = "hidden Markov models, time series, data mining, signal processing, geometric algorithms",
  }