@article{multitaskregularizationwithcovariance,
  title = {Multi-Task Regularization with Covariance Dictionary for Linear Classifiers},
  author = {Fanyi Xiao and Ruikun Luo and Zhiding Yu},
  year = {2013},
  eprint = {1310.5393},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1310.5393v1},
}