@article{skipgramlanguagemodelingusingsparsenon,
  title = {Skip-gram Language Modeling Using Sparse Non-negative Matrix Probability Estimation},
  author = {Noam Shazeer and Joris Pelemans and Ciprian Chelba},
  year = {2014},
  eprint = {1412.1454},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1412.1454v2},
}