@inproceedings{nakata-EtAl:2002:S2S,
  author    = {Nakata, Takayuki  and  Ikeda, Takahiro  and  Ando, Shinichi  and  Okumura, Akitoshi},
  title     = {Topic Detection Based on Dialogue History},
  booktitle = {Proceedings of the Workshop on Speech-to-Speech Translation: Algorithms and Systems},
  year      = 2002,
  month     = {July},
  address   = {Philadelphia},
  publisher = {Association for Computational Linguistics},
  pages     = {9--14}
}