@article{JMLR:v20:16-309,
  author  = {Po-Wei Wang and Ching-pei Lee and Chih-Jen Lin},
  title   = {The Common-directions Method for Regularized Empirical Risk Minimization},
  journal = {Journal of Machine Learning Research},
  year    = {2019},
  volume  = {20},
  number  = {58},
  pages   = {1--49},
  url     = {http://jmlr.org/papers/v20/16-309.html}
}