@inproceedings{unsupervisedkerneldimensionreduction,
  title = {Unsupervised Kernel Dimension Reduction},
  author = {Meihong Wang and Fei Sha and Michael. I. Jordan},
  year = {2010},
  booktitle = {NeurIPS 2010 12},
  url = {http://papers.nips.cc/paper/4122-unsupervised-kernel-dimension-reduction},
}