@article{ruberanunsupervisedmethodforautomatic,
  title = {RUBER: An Unsupervised Method for Automatic Evaluation of Open-Domain Dialog Systems},
  author = {Chongyang Tao and Lili Mou and Dongyan Zhao and Rui Yan},
  year = {2017},
  eprint = {1701.03079},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1701.03079v2},
}