@InProceedings{bhat-sproat:2009:ACLIJCNLP,
  author    = {Bhat, Suma  and  Sproat, Richard},
  title     = {Knowing the Unseen: Estimating Vocabulary Size over Unseen Samples},
  booktitle = {Proceedings of the Joint Conference of the 47th Annual Meeting of the ACL and the 4th International Joint Conference on Natural Language Processing of the AFNLP},
  month     = {August},
  year      = {2009},
  address   = {Suntec, Singapore},
  publisher = {Association for Computational Linguistics},
  pages     = {109--117},
  url       = {http://www.aclweb.org/anthology/P/P09/P09-1013}
}