@article{learningdualretrievalmoduleforsemi,
  title = {Learning Dual Retrieval Module for Semi-supervised Relation Extraction},
  author = {Hongtao Lin and Jun Yan and Meng Qu and Xiang Ren},
  year = {2019},
  eprint = {1902.07814},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1902.07814v2},
}