@InProceedings{collins:2002:EMNLP02,
  author    = {Michael Collins},
  title     = {Discriminative Training Methods for Hidden Markov Models: Theory and Experiments with Perceptron Algorithms},
  booktitle = {Proceedings of the 2002 Conference on Empirical Methods in Natural Language Processing},
  month     = {July},
  year      = {2002},
  publisher = {Association for Computational Linguistics},
  pages     = {1--8},
  url       = {http://www.aclweb.org/anthology/W02-1001},
  doi       = {10.3115/1118693.1118694}
}