@article{JMLR:v11:cavallanti10a,
  author  = {Giovanni Cavallanti and Nicol{{\'o}} Cesa-Bianchi and Claudio Gentile},
  title   = {Linear Algorithms for Online Multitask Classification},
  journal = {Journal of Machine Learning Research},
  year    = {2010},
  volume  = {11},
  number  = {97},
  pages   = {2901--2934},
  url     = {http://jmlr.org/papers/v11/cavallanti10a.html}
}