@InProceedings{wang-xu-huang:2013:EMNLP,
  author    = {Wang, Wei  and  Xu, Hua  and  Huang, Xiaoqiu},
  title     = {Implicit Feature Detection via a Constrained Topic Model and {SVM}},
  booktitle = {Proceedings of the 2013 Conference on Empirical Methods in Natural Language Processing},
  month     = {October},
  year      = {2013},
  address   = {Seattle, Washington, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {903--907},
  url       = {http://www.aclweb.org/anthology/D13-1092}
}