@inproceedings{wu2016contextual,
  title={Contextual Bandits in a Collaborative Environment},
  author={Wu, Qingyun and Wang, Huazheng and Gu, Quanquan and Wang, Hongning},
  booktitle={Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval},
  pages={529--538},
  year={2016},
  organization={ACM}
}