@article{combinatorialkeywordrecommendationsfor,
  title = {Combinatorial Keyword Recommendations for Sponsored Search with Deep Reinforcement Learning},
  author = {Zhipeng Li and Jianwei Wu and Lin Sun and Tao Rong},
  year = {2019},
  eprint = {1907.08686},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1907.08686v1},
}