@InProceedings{metzler-hovy-zhang:2011:ACL-HLT2011,
  author    = {Metzler, Donald  and  Hovy, Eduard  and  Zhang, Chunliang},
  title     = {An Empirical Evaluation of Data-Driven Paraphrase Generation Techniques},
  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     = {546--551},
  url       = {http://www.aclweb.org/anthology/P11-2096}
}