@InProceedings{parikh-cohen-xing:2014:P14-1,
  author    = {Parikh, Ankur P.  and  Cohen, Shay B.  and  Xing, Eric P.},
  title     = {Spectral Unsupervised Parsing with Additive Tree Metrics},
  booktitle = {Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)},
  month     = {June},
  year      = {2014},
  address   = {Baltimore, Maryland},
  publisher = {Association for Computational Linguistics},
  pages     = {1062--1072},
  url       = {http://www.aclweb.org/anthology/P14-1100}
}