@ARTICLE{cheng14ml,
  author = {R\'obert Busa-Fekete and Bal\'azs Sz\"or\'enyi and Paul Weng and Weiwei Cheng and Eyke H\"ullermeier},
  title = {Preference-based reinforcement learning: evolutionary direct policy search using a preference-based racing algorithm},
  journal = {Machine Learning},
  year = {2014},
  volume = {97},
  pages = {327--351},
  number = {3},
  doi = {10.1007/s10994-014-5458-8},
  url = {http://link.springer.com/article/10.1007/s10994-014-5458-8}
}