@article{ChuLRS11,
  author    = {Wei Chu and Lihong Li and Lev Reyzin and Robert E. Schapire}
  title     = {Contextual Bandits with Linear Payoff Functions},
  journal   = {Journal of Machine Learning Research - Proceedings Track},
  volume    = {15},
  year      = {2011},
  pages     = {208-214},
}