@inproceedings{collins:2002:ACL,
  author    = {Collins, Michael},
  title     = {Ranking Algorithms for Named Entity Extraction: Boosting and the Voted Perceptron},
  booktitle = {Proceedings of the 40th Annual Meeting of the Association for Computational Linguistics (ACL)},
  year      = 2002,
  pages     = {489--496}
}