@article{JMLR:v6:ando05a,
  author  = {Rie Kubota Ando and Tong Zhang},
  title   = {A Framework for Learning Predictive Structures from Multiple Tasks and Unlabeled Data},
  journal = {Journal of Machine Learning Research},
  year    = {2005},
  volume  = {6},
  number  = {61},
  pages   = {1817--1853},
  url     = {http://jmlr.org/papers/v6/ando05a.html}
}