@InProceedings{xie-EtAl:2015:ACL-IJCNLP,
  author    = {Xie, Yusheng  and  Daga, Pranjal  and  Cheng, Yu  and  Zhang, Kunpeng  and  Agrawal, Ankit  and  Choudhary, Alok},
  title     = {Reducing infrequent-token perplexity via variational corpora},
  booktitle = {Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (Volume 2: Short Papers)},
  month     = {July},
  year      = {2015},
  address   = {Beijing, China},
  publisher = {Association for Computational Linguistics},
  pages     = {609--615},
  url       = {http://www.aclweb.org/anthology/P15-2101}
}