@InProceedings{xiong-litman:2011:EduApp,
  author    = {Xiong, Wenting  and  Litman, Diane},
  title     = {Understanding Differences in Perceived Peer-Review Helpfulness using Natural Language Processing},
  booktitle = {Proceedings of the Sixth Workshop on Innovative Use of NLP for Building Educational Applications},
  month     = {June},
  year      = {2011},
  address   = {Portland, Oregon},
  publisher = {Association for Computational Linguistics},
  pages     = {10--19},
  url       = {http://www.aclweb.org/anthology/W11-1402}
}