@article{JMLR:v9:amit08a,
  author  = {Yonatan Amit and Shai Shalev-Shwartz and Yoram Singer},
  title   = {Online Learning of Complex Prediction Problems Using Simultaneous Projections},
  journal = {Journal of Machine Learning Research},
  year    = {2008},
  volume  = {9},
  number  = {46},
  pages   = {1399--1435},
  url     = {http://jmlr.org/papers/v9/amit08a.html}
}