@InProceedings{zou-zhou-zhu:2015:EMNLP,
  author    = {Zou, Bowei  and  Zhou, Guodong  and  Zhu, Qiaoming},
  title     = {Unsupervised Negation Focus Identification with Word-Topic Graph Model},
  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     = {1632--1636},
  url       = {https://aclweb.org/anthology/D/D15/D15-1187}
}