@article{JMLR:v11:cawley10a,
  author  = {Gavin C. Cawley and Nicola L. C. Talbot},
  title   = {On Over-fitting in Model Selection and Subsequent Selection Bias in Performance Evaluation},
  journal = {Journal of Machine Learning Research},
  year    = {2010},
  volume  = {11},
  number  = {70},
  pages   = {2079--2107},
  url     = {http://jmlr.org/papers/v11/cawley10a.html}
}