@InProceedings{niklaus-EtAl:2018:C18-1,
  author    = {Niklaus, Christina  and  Cetto, Matthias  and  Freitas, André  and  Handschuh, Siegfried},
  title     = {A Survey on Open Information Extraction},
  booktitle = {Proceedings of the 27th International Conference on Computational Linguistics},
  month     = {August},
  year      = {2018},
  address   = {Santa Fe, New Mexico, USA},
  publisher = {Association for Computational Linguistics},
  pages     = {3866--3878},
  abstract  = {We provide a detailed overview of the various approaches that were proposed to date to solve the task of Open Information Extraction. We present the major challenges that such systems face, show the evolution of the suggested approaches over time and depict the specific issues they address. In addition, we provide a critique of the commonly applied evaluation procedures for assessing the performance of Open IE systems and highlight some directions for future work.},
  url       = {http://www.aclweb.org/anthology/C18-1326}
}