@article{personalizedheartstepsareinforcement,
  title = {Personalized HeartSteps: A Reinforcement Learning Algorithm for Optimizing Physical Activity},
  author = {Peng Liao and Kristjan Greenewald and Predrag Klasnja and Susan Murphy},
  year = {2019},
  eprint = {1909.03539},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1909.03539v1},
}