@inproceedings{takamura-matsumoto-yamada:2004:CONLL,
  author    = {Takamura, Hiroya  and  Matsumoto, Yuji  and  Yamada, Hiroyasu},
  title     = {Modeling Category Structures with a Kernel Function},
  booktitle = {HLT-NAACL 2004 Workshop: Eighth Conference on Computational Natural Language Learning (CoNLL-2004) },
  editor = {Hwee Tou Ng and Ellen Riloff},
  year      = 2004,
  month     = {May 6 - May 7},
  address   = {Boston, Massachusetts, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {57--64}
}