@article{futilityanalysisinthecrossvalidationof,
  title = {Futility Analysis in the Cross-Validation of Machine Learning Models},
  author = {Max Kuhn},
  year = {2014},
  eprint = {1405.6974},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1405.6974v1},
}