@inproceedings{usinggraphsofclassifierstoimpose1,
  title = {Using Graphs of Classifiers to Impose Constraints on Semi-supervised Relation Extraction},
  author = {Lidong Bing and William Cohen and Bhuwan Dhingra and Richard Wang},
  year = {2016},
  booktitle = {WS 2016 6},
  url = {https://aclanthology.org/W16-1301},
}