@InProceedings{stratos-EtAl:2013:CoNLL-2013,
  author    = {Stratos, Karl  and  Rush, Alexander  and  Cohen, Shay B.  and  Collins, Michael},
  title     = {Spectral Learning of Refinement HMMs},
  booktitle = {Proceedings of the Seventeenth Conference on Computational Natural Language Learning},
  month     = {August},
  year      = {2013},
  address   = {Sofia, Bulgaria},
  publisher = {Association for Computational Linguistics},
  pages     = {56--64},
  url       = {http://www.aclweb.org/anthology/W13-3507}
}