@InProceedings{chen-EtAl:2018:EMNLP9,
  author    = {Chen, Jun  and  Zhang, Xiaoming  and  Wu, Yu  and  Yan, Zhao  and  Li, Zhoujun},
  title     = {Keyphrase Generation with Correlation Constraints},
  booktitle = {Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing},
  month     = {October-November},
  year      = {2018},
  address   = {Brussels, Belgium},
  publisher = {Association for Computational Linguistics},
  pages     = {4057--4066},
  url       = {http://www.aclweb.org/anthology/D18-1439}
}