@inproceedings{Kazama:2003:EMNLP,
  author = {Kazama, Jun'ichi  and  Tsujii, Jun'ichi},
  title  = {Evaluation and Extension of Maximum Entropy Models with Inequality Constraints},
  booktitle = {Proceedings of the 2003 Conference on Empirical Methods in Natural Language Processing},
  editor = {Michael Collins and Mark Steedman},
  url    = {http://www.aclweb.org/anthology/W03-1018.pdf},
  year   = 2003,
  pages  = {137--144}
}