@InProceedings{liu-dahlmeier-ng:2010:EMNLP,
  author    = {Liu, Chang  and  Dahlmeier, Daniel  and  Ng, Hwee Tou},
  title     = {{PEM}: A Paraphrase Evaluation Metric Exploiting Parallel Texts},
  booktitle = {Proceedings of the 2010 Conference on Empirical Methods in Natural Language Processing},
  month     = {October},
  year      = {2010},
  address   = {Cambridge, MA},
  publisher = {Association for Computational Linguistics},
  pages     = {923--932},
  url       = {http://www.aclweb.org/anthology/D10-1090}
}