@InProceedings{yang-downey-boydgraber:2015:EMNLP,
  author    = {Yang, Yi  and  Downey, Doug  and  Boyd-Graber, Jordan},
  title     = {Efficient Methods for Incorporating Knowledge into Topic Models},
  booktitle = {Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing},
  month     = {September},
  year      = {2015},
  address   = {Lisbon, Portugal},
  publisher = {Association for Computational Linguistics},
  pages     = {308--317},
  url       = {http://aclweb.org/anthology/D15-1037}
}