@inproceedings{Crook09,
  title = "Unsupervised Classification of Dialogue Acts using a Dirichlet Process Mixture Model",
  author = "Crook, N.T. and Granell, R. and Pulman, S",
  year = "2009",
  address = "Queen Mary University of London",
  booktitle = "Proceedings of SIGDIAL 2009: the 10th Annual Meeting of the Special Interest Group in Discourse and Dialogue",
  month = "September",
  pages = "341–348",
}