@InProceedings{shibata-kurohashi:2006:POS,
  author    = {Shibata, Tomohide  and  Kurohashi, Sadao},
  title     = {Unsupervised Topic Identification by Integrating Linguistic and Visual Information Based on Hidden Markov Models},
  booktitle = {Proceedings of the COLING/ACL 2006 Main Conference Poster Sessions},
  month     = {July},
  year      = {2006},
  address   = {Sydney, Australia},
  publisher = {Association for Computational Linguistics},
  pages     = {755--762},
  url       = {http://www.aclweb.org/anthology/P/P06/P06-2097}
}