@article{JMLR:v18:16-634,
  author  = {Christian Wirth and Riad Akrour and Gerhard Neumann and Johannes F{{\"u}}rnkranz},
  title   = {A Survey of Preference-Based Reinforcement Learning Methods},
  journal = {Journal of Machine Learning Research},
  year    = {2017},
  volume  = {18},
  number  = {136},
  pages   = {1--46},
  url     = {http://jmlr.org/papers/v18/16-634.html}
}