@InProceedings{li-grishman:2013:RANLP-2013,
  author    = {Li, Xiang  and  Grishman, Ralph},
  title     = {Confidence Estimation for Knowledge Base Population},
  booktitle = {Proceedings of the International Conference Recent Advances in Natural Language Processing RANLP 2013},
  month     = {September},
  year      = {2013},
  address   = {Hissar, Bulgaria},
  publisher = {INCOMA Ltd. Shoumen, BULGARIA},
  pages     = {396--401},
  url       = {http://www.aclweb.org/anthology/R13-1051}
}