@InProceedings{komachi-EtAl:2009:Short,
  author    = {Komachi, Mamoru  and  Makimoto, Shimpei  and  Uchiumi, Kei  and  Sassano, Manabu},
  title     = {Learning Semantic Categories from Clickthrough Logs},
  booktitle = {Proceedings of the ACL-IJCNLP 2009 Conference Short Papers},
  month     = {August},
  year      = {2009},
  address   = {Suntec, Singapore},
  publisher = {Association for Computational Linguistics},
  pages     = {189--192},
  url       = {http://www.aclweb.org/anthology/P/P09/P09-2048}
}