@InProceedings{chen-EtAl:2011:ACL-HLT2011,
  author    = {Chen, Harr  and  Benson, Edward  and  Naseem, Tahira  and  Barzilay, Regina},
  title     = {In-domain Relation Discovery with Meta-constraints via Posterior Regularization},
  booktitle = {Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies},
  month     = {June},
  year      = {2011},
  address   = {Portland, Oregon, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {530--540},
  url       = {http://www.aclweb.org/anthology/P11-1054}
}