@article{JMLR:v14:wang13c,
  author  = {Shusen Wang and Zhihua Zhang},
  title   = {Improving CUR Matrix Decomposition and the Nystrom Approximation via Adaptive Sampling},
  journal = {Journal of Machine Learning Research},
  year    = {2013},
  volume  = {14},
  number  = {47},
  pages   = {2729--2769},
  url     = {http://jmlr.org/papers/v14/wang13c.html}
}