@article{JMLR:v7:begleiter06a,
  author  = {Ron Begleiter and Ran El-Yaniv},
  title   = {Superior Guarantees for Sequential Prediction and Lossless Compression via Alphabet Decomposition},
  journal = {Journal of Machine Learning Research},
  year    = {2006},
  volume  = {7},
  number  = {13},
  pages   = {379--411},
  url     = {http://jmlr.org/papers/v7/begleiter06a.html}
}