@article{JMLR:v9:ye08b,
  author  = {Jieping Ye and Shuiwang Ji and Jianhui Chen},
  title   = {Multi-class Discriminant Kernel Learning via Convex Programming},
  journal = {Journal of Machine Learning Research},
  year    = {2008},
  volume  = {9},
  number  = {25},
  pages   = {719--758},
  url     = {http://jmlr.org/papers/v9/ye08b.html}
}